Abstract A series of mixed oxide (CdySn(1-y)O2) were synthesized by Pechini method followed by ion exchange with sulfide ions and heat treatment in nitrogen atmosphere to reach Cd-doped SnO2 and binary (Cd-SnO2/CdS) and ternary (Cd-SnO2/CdO/CdS and SnO2/CdO/CdS) composites. These materials have demonstrated able to absorb visible light and some of them are actives in photocatalytic reforming reaction of glycerol aqueous solution to produce hydrogen. The materials obtained in each step of the synthesis were characterized using different techniques (XRD, Raman, DRS, SEM and EDX). The influence of the calcination temperature in the ion exchange step, as well as the cadmium content in the formation of oxides and composites were investigated. A type II heterostructure, Cd(7%)-SnO2/(CdS)0.3, was obtained when the start solution had the same amount of cadmium and tin and this composite has demonstrated the best photocatalytic activity in hydrogen production, around 290 μmol g−1 h−1. This value is very close to the obtained with commercial CdS, but with a great advantage, it has a lower content of cadmium, being less toxic.

中文翻译：

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Cd掺杂的SnO 2 /CdS异质结构在可见光照射下有效应用于甘油光催化重整制氢

摘要 采用 Pechini 法合成了一系列混合氧化物 (CdySn(1-y)O2)，然后与硫化物离子进行离子交换，在氮气氛中进行热处理，得到 Cd 掺杂的 SnO2 和二元 (Cd-SnO2/CdS) 和三元。 （Cd-SnO2/CdO/CdS 和 SnO2/CdO/CdS）复合材料。这些材料已被证明能够吸收可见光，其中一些是甘油水溶液光催化重整反应产生氢气的活性物质。在合成的每个步骤中获得的材料使用不同的技术（XRD、拉曼、DRS、SEM 和 EDX）进行表征。研究了离子交换步骤中煅烧温度的影响，以及镉含量对氧化物和复合物形成的影响。II 型异质结构，Cd(7%)-SnO2/(CdS)0.3，当起始溶液含有相同量的镉和锡时，该复合材料在产氢方面表现出最佳的光催化活性，约为 290 μmol g-1 h-1。该值非常接近商业 CdS 获得的值，但具有很大的优势，它的镉含量较低，毒性较小。