Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection

This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ metho...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Ullah, Sami [verfasserIn] Abbas, Kainaat [verfasserIn] Ali, Zulqurnain [verfasserIn] Atif, Muhammad [verfasserIn] Khalid, Waqas [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection

Übergeordnetes Werk:	Enthalten in: Materials chemistry and physics - New York, NY [u.a.] : Elsevier, 1983, 312
Übergeordnetes Werk:	volume:312

DOI / URN:	10.1016/j.matchemphys.2023.128638

Katalog-ID:	ELV066184754

Internformat


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520			\|a This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions.
650		4	\|a Electrochemical sensing
650		4	\|a GO-CeO
650		4	\|a Heavy metals ion detection
650		4	\|a Mercury detection
700	1		\|a Abbas, Kainaat \|e verfasserin \|4 aut
700	1		\|a Ali, Zulqurnain \|e verfasserin \|4 aut
700	1		\|a Atif, Muhammad \|e verfasserin \|4 aut
700	1		\|a Khalid, Waqas \|e verfasserin \|0 (orcid)0000-0003-3109-4866 \|4 aut
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publishDate	2023
allfields	10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312
spelling	10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312
allfields_unstemmed	10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312
allfieldsGer	10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312
allfieldsSound	10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312
language	English
source	Enthalten in Materials chemistry and physics 312 volume:312
sourceStr	Enthalten in Materials chemistry and physics 312 volume:312
format_phy_str_mv	Article
bklname	Festkörperchemie Festkörperphysik Werkstoffkunde: Allgemeines
institution	findex.gbv.de
topic_facet	Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection
dewey-raw	540
isfreeaccess_bool	false
container_title	Materials chemistry and physics
authorswithroles_txt_mv	Ullah, Sami @@aut@@ Abbas, Kainaat @@aut@@ Ali, Zulqurnain @@aut@@ Atif, Muhammad @@aut@@ Khalid, Waqas @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	302719350
dewey-sort	3540
id	ELV066184754
language_de	englisch
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author	Ullah, Sami
spellingShingle	Ullah, Sami ddc 540 fid ASIEN ssgn 6,25 bkl 35.90 bkl 33.61 bkl 51.00 misc Electrochemical sensing misc GO-CeO misc Heavy metals ion detection misc Mercury detection Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection
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topic_title	540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection
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title	Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection
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title_full	Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection
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author_browse	Ullah, Sami Abbas, Kainaat Ali, Zulqurnain Atif, Muhammad Khalid, Waqas
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title_sort	enhancing mercury (ii) ion detection with graphene oxide-cerium oxide nanocomposites: enzyme free ultrasensitive detection
title_auth	Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection
abstract	This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions.
abstractGer	This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions.
abstract_unstemmed	This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions.
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title_short	Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection
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author2	Abbas, Kainaat Ali, Zulqurnain Atif, Muhammad Khalid, Waqas
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doi_str	10.1016/j.matchemphys.2023.128638
up_date	2024-07-06T16:52:34.861Z
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