Direct synthesis of all-inorganic heterostructured cdse/cds qds in aqueous solution for improved photocatalytic hydrogen generation
文献类型：期刊论文
| 作者 | Li, Zhi-Jun1; Fan, Xiang-Bing1; Li, Xu-Bing1; Li, Jia-Xin1; Zhan, Fei2; Tao, Ye2; Zhang, Xiaoyi3; Kong, Qing-Yu4; Zhao, Ning-Jiu5; Zhang, Jian-Ping5 |
| 刊名 | Journal of materials chemistry a
 |
| 出版日期 | 2017-06-07 |
| 卷号 | 5期号:21页码:10365-10373 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c7ta01670k |
| 通讯作者 | Tao, ye(taoy@ihep.ac.cn) ; Wu, li-zhu(lzwu@mail.ipc.ac.cn) |
| 英文摘要 | Here we present a facile aqueous approach to synthesize heterostructured cdse/cds qds with all-inorganic chalcogenide s2- ligands under mild conditions. high-resolution transmission electron microscopy (hrtem), x-ray diffraction (xrd), raman spectroscopy, x-ray photoelectron spectroscopy (xps), and steady-state emission spectroscopy demonstrate that the heterostructured cdse/cds qds with sulfur-rich surface composition are formed by heterogeneous nucleation of cd2+ and s2- precursors on the cdse qds. after adsorption of small ni(oh)(2) clusters over the surface in situ, the cdse/cds-ni(oh)(2) photocatalyst enables h-2 production efficiently with an internal quantum yield of 52% under visible light irradiation at 455 nm, up to an 8-fold increase of activity to that of spherical cdse qds-ni(oh)(2) under the same conditions. femtosecond transient absorption spectroscopy, x-ray transient absorption (xta) spectroscopy, steady-state and time-resolved emission spectroscopy show that the quasi-type-ii band alignment in the cdse/cds heterostructure is responsible for the efficiency enhancement of light harvesting and surface/interfacial charge separation in solar energy conversion. the unprecedented results exemplify an easily accessible pattern of aqueous synthesis of all-inorganic heterostructured qds for advanced photosynthetic h-2 evolution. |
| WOS关键词 | SEMICONDUCTOR QUANTUM DOTS ; SOLAR-ENERGY CONVERSION ; CHARGE SEPARATION ; NANOROD HETEROSTRUCTURES ; COLLOIDAL NANOCRYSTALS ; NICKEL-CATALYST ; H-2 GENERATION ; VISIBLE-LIGHT ; CDS NANORODS ; IN-SITU |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000402387900030 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177367 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Tao, Ye; Wu, Li-Zhu |
| 作者单位 | 1.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 3.Argonne Natl Lab, Adv Photon Source, Sci Div, Dept Xray, 9700 South Cass Ave, Argonne, IL 60430 USA 4.Synchrotron SOLEIL, LOrme Des Merisiers, F-91192 Gif Sur Yvette, France 5.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhi-Jun,Fan, Xiang-Bing,Li, Xu-Bing,et al. Direct synthesis of all-inorganic heterostructured cdse/cds qds in aqueous solution for improved photocatalytic hydrogen generation[J]. Journal of materials chemistry a,2017,5(21):10365-10373. |
| APA | Li, Zhi-Jun.,Fan, Xiang-Bing.,Li, Xu-Bing.,Li, Jia-Xin.,Zhan, Fei.,...&Wu, Li-Zhu.(2017).Direct synthesis of all-inorganic heterostructured cdse/cds qds in aqueous solution for improved photocatalytic hydrogen generation.Journal of materials chemistry a,5(21),10365-10373. |
| MLA | Li, Zhi-Jun,et al."Direct synthesis of all-inorganic heterostructured cdse/cds qds in aqueous solution for improved photocatalytic hydrogen generation".Journal of materials chemistry a 5.21(2017):10365-10373. |
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来源：高能物理研究所
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