In2S3 nanomaterial as a broadband spectrum photocatalyst to display significant activity

Wei, Gao; Liu, Wenxia; Leng, Yanhua; Wang, Xiaowei; Wang, Xingqi; Hu, Bin; Yu, Deng‐Guang; Sang, Yuanhua; Liu, Hong

doi:10.1016/j.apcatb.2015.03.048

Cited by 152 publications

(67 citation statements)

References 42 publications

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“…At present, indium sulphide (In 2 S 3 ) material, a III-VI group sulphide, is a semiconductor with a bandgap of 2.0–2.3 eV and would show excellent optical property, especially, a wide response to the solar spectrum 18,19 . More importantly, the conduction band (CB) of In 2 S 3 is composed of d, s and p orbitals, while the valence band (VB) consists of S 3p orbitals, which are much more negative than O 2p orbitals 3 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of ZnS@In2S3 Core@shell Composite for Enhanced Photocatalytic Degradation of Gaseous o-Dichlorobenzene under Visible Light

Liu

et al. 2017

Sci Rep

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In this study, novel ZnS@In2S3 core@shell hollow nanospheres were fabricated by a facile refluxing method for the first time, and the formation mechanism of hollow structure with interior architecture was discussed based on ion-exchange Ostwald ripening. As the photocatalytic material for degradation of gaseous o-Dichlorobenzene (o-DCB), the as-synthesized core@shell hollow nanospheres were found to show significantly enhanced catalytic performance for effective separation of photo-generated charges. Moreover, the mechanisms of enhanced activity were elucidated by band alignment and unique configuration. Such photocatalyst would meet the demands for the control of persistent organic pollutant (POPs) in the atmospheric environment.

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Section: Introductionmentioning

confidence: 99%

Preparation of ZnS@In2S3 Core@shell Composite for Enhanced Photocatalytic Degradation of Gaseous o-Dichlorobenzene under Visible Light

Liu

et al. 2017

Sci Rep

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“…The activity of TiO 2 /H 2 O 2 thermally-assisted photo-catalytic system was evaluated by the degradation of methyl orange (MO), a stable azo dye generally used as a model organic pollutant [13,19]. The results show that the concentration of MO was hardly changed when the MO was irradiated for 3 h under the infrared lamp at ambient temperature ( Fig.…”

Section: Thermally-assisted Photocatalytic Activity and Degradation Omentioning

confidence: 94%

“…The zeta potentials of the TiO 2 samples were determined by a Zetasizer 3000 HSA (Malvern Instruments, UK). Photoelectrochemical measurements were performed on a CHI660E electrochemical workstation (Chenhua Ins., Inc., Shanghai, China) with a standard three-electrode assembly using Ag/AgCl as the reference electrode, Pt wire as the counter electrode and TiO 2 -coated fluorine-doped tin oxide (FTO) conductive glass as the working electrode [13,18]. The electrolyte was 0.5 mol L −1 Na 2 SO 4 solution (pH 6.8).…”

Section: Thermally-assisted Photodegradation Of Ligninmentioning

confidence: 99%

“…Therefore, the visible and near-infrared (NIR) radiation that account for more than 90% of sunlight have not been efficiently used in conventional heterogeneous photocatalytic mineralization of pulp and paper mill effluents. Developing visible and NIR active photocatalytic processes is key for the full use of solar energy in the photodegradation of organic pollutants [12][13][14]. Many strategies for extending the photocatalytic activity of TiO 2 and ZnO to the visible light region have been developed in paper mill effluent treatments, such as loading narrow band gap semiconductors [15], noble metals [16], or dyesensitization [17].…”

Section: Introductionmentioning

confidence: 99%

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Thermally-assisted photodegradation of lignin by TiO2/H2O2 under visible/near-infrared light irradiation

Liu

2017

Sci. China Mater.

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As a bio-recalcitrant organic pollutant in paper mill effluent, lignin is generally removed by an advanced oxidation process, such as a TiO 2 /H 2 O 2 photocatalytic technique under irradiation with ultraviolet light, which only accounts for less than 5% of sunlight. Herein, we reported a TiO 2 /H 2 O 2 -based thermally-assisted photocatalytic process that allows lignin to be efficiently degraded under visible/ near-infrared light at an elevated temperature. Adsorption of H 2 O 2 on TiO 2 nanoparticles and an increase of temperature facilitate the production and separation of charge carriers under near-infrared and visible light irradiation, accelerate carrier transfer at the TiO 2 -electrolyte interface and promote the production of hydroxyl radicals. A higher level of H 2 O 2 addition results in an increased degradation rate of lignin, while the optimal temperature for the thermally-assisted photodegradation of lignin is 70°C. A charge carrier excitation and transfer process was proposed for the TiO 2 /H 2 O 2 thermally-assisted photocatalytic process. This work describes a new method for the photodegradation of organic pollutants, such as residual lignin in paper mill effluent, using wide band gap semiconductors under visible and near-infrared light irradiation.

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“…Gao and co-authors [38] have controlled the morphology of In 2 S 3 NPs, thus adjusting the mass-transfer pathway for the photocatalytic removal of pollutants in the liquid-phase system. The activity was attributed to the relatively higher specific surface area and the presence of more reaction sites, which accelerated the surface separation of photo-induced charges and the inter-facial charge-carrier transfer.…”

Section: Indium Nps Based Materialsmentioning

confidence: 99%

Gallium and indium nanomaterials for environmental protection

2020

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Recent advances in preparation and use of gallium and indium nanoparticles and nanocomposites are briefly presented. The following applications of the obtained materials are outlined: (i) Preparation of sensors for measuring in air of gaseous pollutants (carbon monoxide, nitrogen dioxide, hydrogen sulfide, ammonia, ozone, hydrogen), vapours of volatile organic compounds (methanol, ethanol, butanol, acetone, liquefied petroleum gas), and humidity, including the basics of the sensing mechanism; (ii) removal of water pollutants by photocatalysis and/or adsorption. Finally, conclusions are drawn about the potential of gallium and indium nanoparticles and nanocomposites and the further studies needed to achieve the implementation of these materials in the real life.

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In2S3 nanomaterial as a broadband spectrum photocatalyst to display significant activity

Cited by 152 publications

References 42 publications

Preparation of ZnS@In2S3 Core@shell Composite for Enhanced Photocatalytic Degradation of Gaseous o-Dichlorobenzene under Visible Light

Preparation of ZnS@In2S3 Core@shell Composite for Enhanced Photocatalytic Degradation of Gaseous o-Dichlorobenzene under Visible Light

Thermally-assisted photodegradation of lignin by TiO2/H2O2 under visible/near-infrared light irradiation

Gallium and indium nanomaterials for environmental protection

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