Highly efficient and noble metal-free NiS modified Mn_xCd_1-xS solid solutions with enhanced photocatalytic activity for hydrogen evolution under visible light irradiation

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• 作者：Xiaolei Liu^a ; Xizhuang Liang^a ; Peng Wang^a ; ^{pengwangicm@sdu.edu.cn} ; Baibiao Huang^a ; ^{bbhuang@sdu.edu.cn} ; Xiaoyan Qin^a ; Xiaoyang Zhang^a ; Ying Dai^b
• 关键词：High efficient ; Noble metal-free ; Photocatalytic hydrogen evolution ; NiS modified MnxCd1-xS nanocomposites ; In suit
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：203
• 期：Complete
• 页码：282-288
• 全文大小：2037 K
• 卷排序：203

文摘

Highly efficient and noble metal-free NiS modified MnxCd1-xS nanocomposites were synthesized via a simple direct in suit precipitation process. Photocatalytic H2 evolution activity of 0.3 wt% NiS/Mn0.5Cd0.5S is nearly 18.6 and 3.1 times than that of pure Mn0.5Cd0.5S and 1.0 wt% Pt/Mn0.5Cd0.5S. NiS acts as electron-trapping center and high active site to prevent charge recombination, and improve the photocatalytic H2 evolution activity. Low cost and earth-abundant NiS can replace noble metal Pt as a highly efficient co-catalyst in photocatalytic H2 evolution. Due to the intimate contact, the photogenerated electrons in the CB of Mn0.5Cd0.5S can be easily transferred to the surface NiS nanoparticles.