葡萄糖为电子给体NaCl盐水体系Cd_xZn_(1-x)S固溶体光催化制氢

Photocatalytic hydrogen generation from NaCl saltwater using glucose as the electron donor over Cd_xZn_(1-x)S Solid Solution

采用水热法制备了CdxZn1-xS固溶体光催化剂。通过XRD、UV-Vis漫反射、比表面积对催化剂进行了表征。研究了以葡萄糖为电子给体的CdxZn1-xS光催化分解NaCl盐水可见光制氢反应。结果表明:NaCl的存在提高了葡萄糖在催化剂表面的吸附。相比纯水体系,NaCl盐水体系中CdxZn1-xS光催化制氢效率明显提高。葡萄糖初始浓度对反应速率的影响符合Langmuir-Hinshelwood关系式。

Cdx Zn1-x S solid solution photocatalysts were synthesized by a hydrothermal method.The prod-ucts were characterized by XRD,UV-Vis absorption spectrometry and BET.Their photoactivities were e-valuated by hydrogen evolution from NaCl saltwater using glucose as the electron donor under visible light （λ≥420 nm）irradiation.It was found that the presence of NaCl increased the adsorption amount of glucose on the surface of catalyst.Compared to the pure water system,the photocatalytic hydrogen production effi-ciency of CdxZn1-xS from NaCl saltwater was improved notably.The effect of concentration of the glucose on the hydrogen generation rate matched the Langmuir-Hinshelwood kinetic model.