Oxygen vacancies modulation Mn
Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthes...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Lu, Wenhui [verfasserIn] Chen, Jing [verfasserIn] Kong, Lingshuai [verfasserIn] Zhu, Feng [verfasserIn] Feng, Zhenyu [verfasserIn] Zhan, Jinhua [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Sensors and actuators |
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| Übergeordnetes Werk: |
volume:333 |
| DOI / URN: |
10.1016/j.snb.2021.129560 |
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| Katalog-ID: |
ELV005616956 |
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| 245 | 1 | 0 | |a Oxygen vacancies modulation Mn |
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| 520 | |a Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. | ||
| 650 | 4 | |a Manganese oxide | |
| 650 | 4 | |a Nanozyme | |
| 650 | 4 | |a Oxygen vacancy | |
| 650 | 4 | |a Oxidase-mimicking | |
| 650 | 4 | |a Colorimetric sensor | |
| 700 | 1 | |a Chen, Jing |e verfasserin |4 aut | |
| 700 | 1 | |a Kong, Lingshuai |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Feng |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Zhenyu |e verfasserin |4 aut | |
| 700 | 1 | |a Zhan, Jinhua |e verfasserin |4 aut | |
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10.1016/j.snb.2021.129560 doi (DE-627)ELV005616956 (ELSEVIER)S0925-4005(21)00128-3 DE-627 ger DE-627 rda eng 530 620 DE-600 50.22 bkl 35.07 bkl Lu, Wenhui verfasserin aut Oxygen vacancies modulation Mn 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. Manganese oxide Nanozyme Oxygen vacancy Oxidase-mimicking Colorimetric sensor Chen, Jing verfasserin aut Kong, Lingshuai verfasserin aut Zhu, Feng verfasserin aut Feng, Zhenyu verfasserin aut Zhan, Jinhua verfasserin aut Enthalten in Sensors and actuators <Lausanne> / B Amsterdam [u.a.] : Elsevier Science, 1990 333 Online-Ressource (DE-627)306710358 (DE-600)1500731-5 (DE-576)082435855 0925-4005 nnns volume:333 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.22 Sensorik 35.07 Chemisches Labor chemische Methoden AR 333 |
| spelling |
10.1016/j.snb.2021.129560 doi (DE-627)ELV005616956 (ELSEVIER)S0925-4005(21)00128-3 DE-627 ger DE-627 rda eng 530 620 DE-600 50.22 bkl 35.07 bkl Lu, Wenhui verfasserin aut Oxygen vacancies modulation Mn 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. Manganese oxide Nanozyme Oxygen vacancy Oxidase-mimicking Colorimetric sensor Chen, Jing verfasserin aut Kong, Lingshuai verfasserin aut Zhu, Feng verfasserin aut Feng, Zhenyu verfasserin aut Zhan, Jinhua verfasserin aut Enthalten in Sensors and actuators <Lausanne> / B Amsterdam [u.a.] : Elsevier Science, 1990 333 Online-Ressource (DE-627)306710358 (DE-600)1500731-5 (DE-576)082435855 0925-4005 nnns volume:333 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.22 Sensorik 35.07 Chemisches Labor chemische Methoden AR 333 |
| allfields_unstemmed |
10.1016/j.snb.2021.129560 doi (DE-627)ELV005616956 (ELSEVIER)S0925-4005(21)00128-3 DE-627 ger DE-627 rda eng 530 620 DE-600 50.22 bkl 35.07 bkl Lu, Wenhui verfasserin aut Oxygen vacancies modulation Mn 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. Manganese oxide Nanozyme Oxygen vacancy Oxidase-mimicking Colorimetric sensor Chen, Jing verfasserin aut Kong, Lingshuai verfasserin aut Zhu, Feng verfasserin aut Feng, Zhenyu verfasserin aut Zhan, Jinhua verfasserin aut Enthalten in Sensors and actuators <Lausanne> / B Amsterdam [u.a.] : Elsevier Science, 1990 333 Online-Ressource (DE-627)306710358 (DE-600)1500731-5 (DE-576)082435855 0925-4005 nnns volume:333 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.22 Sensorik 35.07 Chemisches Labor chemische Methoden AR 333 |
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10.1016/j.snb.2021.129560 doi (DE-627)ELV005616956 (ELSEVIER)S0925-4005(21)00128-3 DE-627 ger DE-627 rda eng 530 620 DE-600 50.22 bkl 35.07 bkl Lu, Wenhui verfasserin aut Oxygen vacancies modulation Mn 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. Manganese oxide Nanozyme Oxygen vacancy Oxidase-mimicking Colorimetric sensor Chen, Jing verfasserin aut Kong, Lingshuai verfasserin aut Zhu, Feng verfasserin aut Feng, Zhenyu verfasserin aut Zhan, Jinhua verfasserin aut Enthalten in Sensors and actuators <Lausanne> / B Amsterdam [u.a.] : Elsevier Science, 1990 333 Online-Ressource (DE-627)306710358 (DE-600)1500731-5 (DE-576)082435855 0925-4005 nnns volume:333 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.22 Sensorik 35.07 Chemisches Labor chemische Methoden AR 333 |
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10.1016/j.snb.2021.129560 doi (DE-627)ELV005616956 (ELSEVIER)S0925-4005(21)00128-3 DE-627 ger DE-627 rda eng 530 620 DE-600 50.22 bkl 35.07 bkl Lu, Wenhui verfasserin aut Oxygen vacancies modulation Mn 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. Manganese oxide Nanozyme Oxygen vacancy Oxidase-mimicking Colorimetric sensor Chen, Jing verfasserin aut Kong, Lingshuai verfasserin aut Zhu, Feng verfasserin aut Feng, Zhenyu verfasserin aut Zhan, Jinhua verfasserin aut Enthalten in Sensors and actuators <Lausanne> / B Amsterdam [u.a.] : Elsevier Science, 1990 333 Online-Ressource (DE-627)306710358 (DE-600)1500731-5 (DE-576)082435855 0925-4005 nnns volume:333 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.22 Sensorik 35.07 Chemisches Labor chemische Methoden AR 333 |
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Oxygen vacancies modulation Mn |
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oxygen vacancies modulation mn |
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Oxygen vacancies modulation Mn |
| abstract |
Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. |
| abstractGer |
Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. |
| abstract_unstemmed |
Mn3O4 nanomaterials exhibit intrinsic molecular oxygen activation properties in biomimetic and environmental catalysis. Modulating the oxygen vacancies (OVs) and identifying the oxygen activation mechanism of Mn3O4 nanomaterials are vital for designing high-performance nanozymes. Herein, the synthesized OV-Mn3O4 Nanoflowers (NFs) possesses different OVs concentrations by regulating oxygen partial pressure. The oxidase-mimicking OV-Mn3O4 NFs showed high catalytic reaction efficiency (kcat/Km) of 1.88 × 10−8 s−1 μM−1, 26.86-fold higher than Mn3O4 with poor-OVs (7.00 × 10-10 s-1 μM-1). The changes of substrates absorption, reactive oxygen species (ROS), and Mn2+/Mn3+/Mn4+ contents are attempted to illustrate clearly with the participation of OVs. Modulation OVs of Mn3O4 nanozymes can enhance the oxygen storage capacity and increase Mn species with lower valence states, which can generate abundant and multifarious ROS for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) substrates. Besides, l-cysteine (l-Cys) is a pivotal amino acid for antiaging and reducing melanin. Colorimetric detection for l-Cys was established based on the enhanced oxidase-like properties of OV-Mn3O4. Compared with Mn3O4 NFs, OV-Mn3O4 NFs are exhibited more sensitive limit of detection (1.31 μM versus 5.69 μM, S/N = 3). Overall, the in-depth mechanism understanding of OVs can provide new perspective to rational design nanozymes and detection sensor with satisfactory property. |
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Oxygen vacancies modulation Mn |
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|
| score |
7.4019365 |