Enhanced photocatalytic properties of CdS nanoparticles decorated α-Fe(2)O(3) nanopillar arrays under visible light.
CdS nanoparticles (NPs) decorated α-Fe2O3nanopillar arrays (NPAs) were fabricated through several steps. Fe NPAs were firstly fabricated by glancing angle deposition technique and oxidized in air to gain α-Fe2O3NPAs. Then these NPAs were decorated by CdS NPs through successive ion layer adsorption and reaction (SILAR). Here we have tested photodegredation of methylene blue (MB) and photoelectrochemical properties under visible light. Especially, when SILAR cycle number reaches to 10, it shows the highest degradation efficiency (94% in 75min on MB) which improves 72% comparing with pure one and the highest photocurrent density (2.0mAcm-2at 0.4V vs Ag/AgCl electrode). α-Fe2O3/CdS hetero-junctions could greatly enhance photocatalytic performance, which can help to accomplish sufficient usage of solar energy and be exploited on pollution abatement in future.
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Shuang
S
Shuang
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; High-Tech Institute of Xi'an, Xi'an 710025, China.
Zheng
Z
Xie
Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. Electronic address: zjzhang@tsinghua.edu.cn.
Zhengjun
Z
Zhang
CdS NPs; Decoration; Degradation efficiency; Glancing angle deposition; MB; Photocatalytic performance; Photoelectrochemical; SILAR; Visible light; α-Fe(2)O(3) NPAs