Hierarchical TiO2–CuInS2 core–shell nanoarrays for photoelectrochemical water splitting

文献情報

出版日 2014-06-16

DOI 10.1039/C4CP01971G

インパクトファクター 3.676

著者

Keying Guo, Zhifeng Liu, Jianhua Han, Zhichao Liu, Yajun Li, Bo Wang, Ting Cui, Cailou Zhou

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要旨

Hierarchical TiO2–CuInS2 core–shell nanoarrays were fabricated directly on conducting glass substrates (FTO) via facile and low-cost hydrothermal and polyol reduction methods for photoelectrochemical (PEC) water splitting using TiO2 branched nanorod arrays (BNRs) as the reactive framework. An enhanced optical property of the core–shell structure was discovered. Firstly, TiO2 BNRs–CuS core–shell structure was synthesized through successive ionic layer adsorption and reaction (SILAR). Subsequently, TiO2 BNRs–CuInS2 core–shell structure was derived from TiO2 BNRs–CuS core–shell structure. On the basis of optimal thickness of the CuInS2 shell, such a TiO2 BNRs–CuInS2 core–shell structure exhibits higher photocatalytic activity, the photocurrent density and efficiency for hydrogen generation are up to 19.07 mA cm−2 and 11.48%, respectively, which are probably because of the improved absorption efficiency and the appropriate gradient energy gap structure. The TiO2 BNRs–CuInS2 core–shell structure can be promising building blocks in photoelectrochemical water splitting systems.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Hierarchical TiO2–CuInS2 core–shell nanoarrays for photoelectrochemical water splitting

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