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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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一步温和水热法制备具有改善光催化活性和稳定性的碳包覆CdS纳米粒子
DOI: 10.1016/S1872-2067(15)60827-0, PP. 1077-1085
Keywords: 葡萄糖碳化,碳包覆的硫化镉,光催化降解,可见光,甲基橙
Abstract:
？首次报道在130oC低温条件下,以乙酸镉和葡萄糖分别作为镉源和碳源,硫脲同时充当硫源和葡萄糖水热碳化的催化剂,通过一步水热碳化法制备了碳包覆的CdS(CdS@C)纳米材料.与相同条件下制备的纯CdS相比,合成的CdS@C粒子具有更小的粒子尺寸、良好的分散性以及更均匀的粒子分布.而且,葡萄糖在水热碳化过程中能够促使CdS优先形成立方晶相.此外,粒子表面的碳物种能拓宽CdS的可见光吸收范围,稍微降低它的带隙能,减缓CdS的光生电子-空穴对的复合和光腐蚀.因此,它能改善CdS在可见光辐射下催化氧化降解甲基橙的活性和稳定性.
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