From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition

Semiconductor photocatalysis is considered one of the most promising technologies for water purification from toxic organic dyes. However, to reliably evaluate the possibility of using a given material as a photocatalyst, it is crucial to investigate not only the photocatalytic activity but also its...
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Autor*in:	Kinga Michalec [verfasserIn] Anna Kusior [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	heterostructure SnO SnS photocatalysis adsorption sensitization

Übergeordnetes Werk:	In: Molecules - MDPI AG, 2003, 26(2021), 23, p 7123
Übergeordnetes Werk:	volume:26 ; year:2021 ; number:23, p 7123

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DOI / URN:	10.3390/molecules26237123

Katalog-ID:	DOAJ015911861

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callnumber-first	Q - Science
author	Kinga Michalec
spellingShingle	Kinga Michalec misc QD241-441 misc heterostructure misc SnO<sub<2</sub< misc SnS<sub<2</sub< misc photocatalysis misc adsorption misc sensitization misc Organic chemistry From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition
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topic_title	QD241-441 From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition heterostructure SnO<sub<2</sub< SnS<sub<2</sub< photocatalysis adsorption sensitization
topic	misc QD241-441 misc heterostructure misc SnO<sub<2</sub< misc SnS<sub<2</sub< misc photocatalysis misc adsorption misc sensitization misc Organic chemistry
topic_unstemmed	misc QD241-441 misc heterostructure misc SnO<sub<2</sub< misc SnS<sub<2</sub< misc photocatalysis misc adsorption misc sensitization misc Organic chemistry
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title	From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition
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title_full	From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition
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title_sort	from adsorbent to photocatalyst: the sensitization effect of sno<sub<2</sub< surface towards dye photodecomposition
callnumber	QD241-441
title_auth	From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition
abstract	Semiconductor photocatalysis is considered one of the most promising technologies for water purification from toxic organic dyes. However, to reliably evaluate the possibility of using a given material as a photocatalyst, it is crucial to investigate not only the photocatalytic activity but also its affinity towards various dyes and reusability. In this work, we studied the adsorptive/photocatalytic properties of hollow-spherical raspberry-like SnO<sub<2</sub< and its SnO<sub<2</sub</SnS<sub<2</sub< heterostructures that were obtained via a chemical conversion method using three different concentrations of a sulfide precursor (thioacetamide). The adsorptive/photocatalytic properties of the samples towards cationic rhodamine B (RhB) and anionic indigo carmine (IC) were analyzed using uncommon wall zeta potential measurements, hydrodynamic diameter studies, and adsorption/photodecomposition tests. Moreover, after conducting cyclic experiments, we investigated the (micro)structural changes of the reused photocatalysts by scanning electron microscopy and Fourier-transform infrared spectroscopy. The obtained results revealed that the sensitization of SnO<sub<2</sub< resulted not only in the significantly enhanced photocatalytic performance of the heterostructures, but also completely changed their affinity towards dyes. Furthermore, despite the seemingly best photocatalytic performance, the sample with the highest SnS<sub<2</sub< content was unstable due to its (micro)structure. This work demonstrates that dye adsorption/desorption processes may overlap the results of cyclic photodecomposition kinetics.
abstractGer	Semiconductor photocatalysis is considered one of the most promising technologies for water purification from toxic organic dyes. However, to reliably evaluate the possibility of using a given material as a photocatalyst, it is crucial to investigate not only the photocatalytic activity but also its affinity towards various dyes and reusability. In this work, we studied the adsorptive/photocatalytic properties of hollow-spherical raspberry-like SnO<sub<2</sub< and its SnO<sub<2</sub</SnS<sub<2</sub< heterostructures that were obtained via a chemical conversion method using three different concentrations of a sulfide precursor (thioacetamide). The adsorptive/photocatalytic properties of the samples towards cationic rhodamine B (RhB) and anionic indigo carmine (IC) were analyzed using uncommon wall zeta potential measurements, hydrodynamic diameter studies, and adsorption/photodecomposition tests. Moreover, after conducting cyclic experiments, we investigated the (micro)structural changes of the reused photocatalysts by scanning electron microscopy and Fourier-transform infrared spectroscopy. The obtained results revealed that the sensitization of SnO<sub<2</sub< resulted not only in the significantly enhanced photocatalytic performance of the heterostructures, but also completely changed their affinity towards dyes. Furthermore, despite the seemingly best photocatalytic performance, the sample with the highest SnS<sub<2</sub< content was unstable due to its (micro)structure. This work demonstrates that dye adsorption/desorption processes may overlap the results of cyclic photodecomposition kinetics.
abstract_unstemmed	Semiconductor photocatalysis is considered one of the most promising technologies for water purification from toxic organic dyes. However, to reliably evaluate the possibility of using a given material as a photocatalyst, it is crucial to investigate not only the photocatalytic activity but also its affinity towards various dyes and reusability. In this work, we studied the adsorptive/photocatalytic properties of hollow-spherical raspberry-like SnO<sub<2</sub< and its SnO<sub<2</sub</SnS<sub<2</sub< heterostructures that were obtained via a chemical conversion method using three different concentrations of a sulfide precursor (thioacetamide). The adsorptive/photocatalytic properties of the samples towards cationic rhodamine B (RhB) and anionic indigo carmine (IC) were analyzed using uncommon wall zeta potential measurements, hydrodynamic diameter studies, and adsorption/photodecomposition tests. Moreover, after conducting cyclic experiments, we investigated the (micro)structural changes of the reused photocatalysts by scanning electron microscopy and Fourier-transform infrared spectroscopy. The obtained results revealed that the sensitization of SnO<sub<2</sub< resulted not only in the significantly enhanced photocatalytic performance of the heterostructures, but also completely changed their affinity towards dyes. Furthermore, despite the seemingly best photocatalytic performance, the sample with the highest SnS<sub<2</sub< content was unstable due to its (micro)structure. This work demonstrates that dye adsorption/desorption processes may overlap the results of cyclic photodecomposition kinetics.
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title_short	From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition
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From Adsorbent to Photocatalyst: The Sensitization Effect of SnO<sub<2</sub< Surface towards Dye Photodecomposition

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