Cu2ZnSnS4鈥揂g2S Nanoscale p鈥搉 Heterostructures as Sensitizers for Photoelectrochemical Water Splitting

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• 作者：Xuelian Yu ; Jingjing Liu ; Aziz Gen莽 ; Maria Ib谩帽ez ; Zhishan Luo ; Alexey Shavel ; Jordi Arbiol ; Guangjin Zhang ; Yihe Zhang ; Andreu Cabot
• 刊名：Langmuir
• 出版年：2015
• 出版时间：September 29, 2015
• 年：2015
• 卷：31
• 期：38
• 页码：10555-10561
• 全文大小：490K
• ISSN：1520-5827

文摘

A cation exchange-based route was used to produce Cu₂ZnSnS₄ (CZTS)鈥揂g₂S nanoparticles with controlled composition. We report a detailed study of the formation of such CZTS鈥揂g₂S nanoheterostructures and of their photocatalytic properties. When compared to pure CZTS, the use of nanoscale p鈥搉 heterostructures as light absorbers for photocatalytic water splitting provides superior photocurrents. We associate this experimental fact to a higher separation efficiency of the photogenerated electron鈥揾ole pairs. We believe this and other type-II nanoheterostructures will open the door to the use of CZTS, with excellent light absorption properties and made of abundant and environmental friendly elements, to the field of photocatalysis.