Zhou Hangyue, Liu Qingyun, Liu Weimin, Ge Jiechao, Lan Minhuan, Wang Chao, Geng Jianxin, Wang Pengfei
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China); College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510 (P.R. China).
Chem Asian J. 2014 Mar;9(3):811-8. doi: 10.1002/asia.201301428. Epub 2014 Jan 8.
Volvox-like Cdx Zn1-x S solid solutions with a cubic zinc blend structure were synthesized through a template-free ethylene glycol process. Cd(Ac)2 ⋅2 H2 O, Zn(Ac)2 ⋅2 H2 O, and thiourea are used as the starting materials and dissolved in ethylene glycol. These reaction precursors and solvent not only contributed to control over the formation of the volvox-like spherical geometry, but also exerted vigorous domination for existence of cubic-phase Cdx Zn1-x S nanostructures. As-prepared volvox-like Cdx Zn1-x S nanospheres have a diameter of around 100 nm with extensional shells. These samples show excellent photocatalytic H2 evolution activity from water splitting under visible-light irradiation without any cocatalyst or scaffolding, owing to their tunable band gap, cubic zinc blend structure, and unique hierarchical porous structure with a high surface area (as high as 95.2 m(2) g(-1) ).
通过无模板乙二醇法合成了具有立方闪锌矿结构的类团藻属CdxZn1 - xS固溶体。以Cd(Ac)2·2H2O、Zn(Ac)2·2H2O和硫脲为原料并溶解于乙二醇中。这些反应前驱体和溶剂不仅有助于控制类团藻属球形几何结构的形成，而且对立方相CdxZn1 - xS纳米结构的存在起到了有力的主导作用。所制备的类团藻属CdxZn1 - xS纳米球直径约为100 nm，具有延伸的壳层。由于其可调谐的带隙、立方闪锌矿结构以及具有高表面积（高达95.2 m2 g-1）的独特分级多孔结构，这些样品在无任何助催化剂或支架的情况下，在可见光照射下表现出优异的光催化水分解产氢活性。
