Journal
JOURNAL OF NATURAL GAS CHEMISTRY
Volume 20, Issue 4, Pages 413-417Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-9953(10)60212-5
Keywords
photocatalytic reduction; carbon dioxide; heterogeneous catalysts; CdS; Bi2S3; CO2 reduction
Funding
- National Natural Science Foundation of China [20906034]
- South China Agricultural University [2009B010100001]
- China Postdoctoral Science Foundation [20080430820]
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The Bi2S3, CdS and Bi2S3/CdS photocatalysts were prepared by direct reactions between their corresponding salt and thiourea in a hydrothermal autoclave. The photocatalytic activities of these photocatalysts for reducing CO2 to CH3OH under visible light irradiation have been investigated. The results show that the photocatalytic activity and visible light response of Bi2S3 are higher than those of CdS. The Bi2S3 modification can enhance the photocatalytic activity and visible light response of CdS. The photocatalytic activity of B12S3/CdS hetero-junction photocatalyst was the highest and the highest yields of methanol was 613 mu mol/g when the weight proportion of Bi2S3 to CdS was 15%, which was about three times as large as that of CdS or two times of that of Bi2S3.
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