The Preparation, Characterization and Photocatalytic Properties of CdS Nanocrystals

Duan, Limei; Pang, Qingyu; Xu, Longya; Zhao, Wei; Liu, Zongrui

doi:10.1166/asl.2012.3738

Cited by 3 publications

(2 citation statements)

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“…Now photocatalytic oxidation technology has become from the environmental degradation of toxic chemical pollutants especially is one of the effective ways of refractory organic compounds and prospects more optimistic. [1,2] Because of semiconductor nanocrystals unique and outstanding properties, it had attracted much attention than others. [3,4] CdS was a typical semiconductor photocatalyst due to it response to visible light, morphologies and dimensions of CdS sample affects its photocatalytic properties.…”

Section: Introductionmentioning

confidence: 99%

The Photodegradation Performance of Phosphotungstic Acid/CdS Composite Materials to Organic Dyes

Wang

Bao

et al. 2014

AMM

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In this paper, CdS sample and phosphotungstic acid/CdS composite materials were prepared by hydrothermal synthesis and impregnation method, respectively. These samples were characterized by FT-IR, XRD and TEM. The characteristic peaks of phosphotungstic acid and CdS appeared in IR spectra of phosphotungstic acid /CdS composite samples. Using the degradation of Rhodamine B and Methylene blue solutions as the model reaction, respectively, the photocatalytic degradation performance of CdS, phosphotungstic acid and their composite samples was discussed under the irradiation of UV light or sunlight. The results showed the degradation effect of phosphotungstic acid /CdS to Rhodamine B and Methylene blue solution was better than CdS under the irradiation of 250 W mercury lamp or sunlight. Composite sample 1 had the best photocatalytic activity and its degradation rate on Rhodamine B was 85.2 % at 120 mins with pH 3.5 under sunlight, and the degradation rate of Methylene blue reached about 92.1% at 120 mins with pH 6.0 under sunlight.

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Section: Introductionmentioning

confidence: 99%

The Photodegradation Performance of Phosphotungstic Acid/CdS Composite Materials to Organic Dyes

Wang

Bao

et al. 2014

AMM

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“…2 Intensive studies on semiconductor nanomaterials as photocatalysts, especially the TiO 2 , ZnO and CdS, have been reported in recent years because of their unique and outstanding properties. [3][4][5][6] TiO 2 is a typical semiconductor photocatalyst, but it is difficult to utilize solar light effectively, 7 and CdS as semiconductor photocatalysts also attracts a lot of research interests due to the visible light activity. 8 Therefore, combining the photocatalytic activity of TiO 2 with the visible light activity of CdS is an important strategy to engineer the sunlight active composite photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

The Preparation and Sunlight Activity of Nanocomposite Photocatalysts for Degradation of Methyl Orange Solution

Duan

Liu

et al. 2013

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Applying one-step solvothermal synthesis method, different CdS/TiO2 nanocomposite materials are obtained by changing the ratio of sulfur and titanium sources. The composite structure and morphology are determined by XRD and TEM. Taking the degradation of methyl orange solution as a model reaction, the photocatalytic activity of CdS/TiO2 composite materials is investigated. The results show that the amount of CdS in composite photocatalyst has great effects on the degradation efficiency of methyl orange under the irradiation of sunlight, and the lower pH of reaction system is also needed to sustain the high degradation efficiency for methyl orange.

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Efficient Sunlight Active Nanocomposite Photocatalyst for Degradation of Pollutant Organic Dyes

Duan

Liu

Pang

et al. 2013

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The sunlight activated photocatalysts are urgently needed for the applications of photocatalytic techniques to environmental pollutants removal. Herein, we report the one-step hydrothermally prepared CdS/TiO2 nanocomposite photocatalyst that is active in the degradation of pollutant organic dyes under solar light. The morphology and components are confirmed by TEM, SEM and XRD. With methylene blue (MB) as the model pollutant organic dye, the photocatalytic activity of CdS/TiO2 nanocomposite photocatalyst under sunlight is demonstrated, and 80% MB is removed after 120 minutes sunlight illumination. Besides, the influences of pH, the amount of photocatalyst and the addition of H2O2 on photocatalytic activity for the degradation of MB are also investigated to mimic water treatment process.

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The Preparation, Characterization and Photocatalytic Properties of CdS Nanocrystals

Cited by 3 publications

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The Photodegradation Performance of Phosphotungstic Acid/CdS Composite Materials to Organic Dyes

The Photodegradation Performance of Phosphotungstic Acid/CdS Composite Materials to Organic Dyes

The Preparation and Sunlight Activity of Nanocomposite Photocatalysts for Degradation of Methyl Orange Solution

Efficient Sunlight Active Nanocomposite Photocatalyst for Degradation of Pollutant Organic Dyes

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