Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method

Self assembly of TiO2/CdS mesoporous microspheres was synthesized via hydrothermal method. The samples were characterized by X-ray powder diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), energy-dispersive spectroscopy analysis (ED...

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Main Authors: Sujing Yu, Juncheng Hu, Jinlin Li
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/2014/854217
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author Sujing Yu
Juncheng Hu
Jinlin Li
author_facet Sujing Yu
Juncheng Hu
Jinlin Li
author_sort Sujing Yu
collection DOAJ
description Self assembly of TiO2/CdS mesoporous microspheres was synthesized via hydrothermal method. The samples were characterized by X-ray powder diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), energy-dispersive spectroscopy analysis (EDS), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), and photoluminescence spectra (PL). The as-synthesized TiO2/CdS mesoporous microspheres showed superior photocatalytic activity for the degradation of RhB under either visible light or simulated sunlight irradiation; the 10 wt% TiO2/CdS sample showed the best performance. Moreover, this catalyst showed improved stability, and the activity did not decrease significantly after four recycles. The heterojunction between TiO2 and CdS may be favorable for the transport of photoinduced electrons from CdS to TiO2. In addition, the mesoporous structure could increase the utilization of light energy and facilitate the diffusion of reactants and products during the photocatalytic reaction.
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institution Kabale University
issn 1110-662X
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publishDate 2014-01-01
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spelling doaj-art-e94f27e94b404c42b0ca1e050e531e692025-02-03T01:21:22ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/854217854217Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal MethodSujing Yu0Juncheng Hu1Jinlin Li2Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, Hubei 430074, ChinaKey Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, Hubei 430074, ChinaKey Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, Hubei 430074, ChinaSelf assembly of TiO2/CdS mesoporous microspheres was synthesized via hydrothermal method. The samples were characterized by X-ray powder diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), energy-dispersive spectroscopy analysis (EDS), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), and photoluminescence spectra (PL). The as-synthesized TiO2/CdS mesoporous microspheres showed superior photocatalytic activity for the degradation of RhB under either visible light or simulated sunlight irradiation; the 10 wt% TiO2/CdS sample showed the best performance. Moreover, this catalyst showed improved stability, and the activity did not decrease significantly after four recycles. The heterojunction between TiO2 and CdS may be favorable for the transport of photoinduced electrons from CdS to TiO2. In addition, the mesoporous structure could increase the utilization of light energy and facilitate the diffusion of reactants and products during the photocatalytic reaction.http://dx.doi.org/10.1155/2014/854217
spellingShingle Sujing Yu
Juncheng Hu
Jinlin Li
Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method
International Journal of Photoenergy
title Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method
title_full Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method
title_fullStr Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method
title_full_unstemmed Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method
title_short Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method
title_sort self assembly of tio2 cds mesoporous microspheres with enhanced photocatalytic activity via hydrothermal method
url http://dx.doi.org/10.1155/2014/854217
work_keys_str_mv AT sujingyu selfassemblyoftio2cdsmesoporousmicrosphereswithenhancedphotocatalyticactivityviahydrothermalmethod
AT junchenghu selfassemblyoftio2cdsmesoporousmicrosphereswithenhancedphotocatalyticactivityviahydrothermalmethod
AT jinlinli selfassemblyoftio2cdsmesoporousmicrosphereswithenhancedphotocatalyticactivityviahydrothermalmethod