Embedding Au Quantum Dots in Rimous Cadmium Sulfide Nanospheres for Enhanced Photocatalytic Hydrogen Evolution
Embedding Au Quantum Dots in Rimous Cadmium Sulfide Nanospheres for Enhanced Photocatalytic Hydrogen Evolution
复制标题
将金量子点嵌入环状硫化镉纳米球中以增强光催化析氢
DOI：
10.1002/smll.201602870
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发表时间：
2016-12-28
期刊：
影响因子：
13.3
通讯作者：
Ma, Tian-Yi
中科院分区：
文献类型：
--
作者：
Kuang, Pan-Yong;Zheng, Ping-Xuan;Ma, Tian-Yi
合理设计和开发具有高析氢活性的新一代光催化剂是解决能源危机的有效策略。对此，采用简单的水热-光还原法制备了镶嵌在硫化镉纳米球中的金量子点杂化光催化剂。表面粗糙、裂隙不规则的环状硫化镉纳米球大大加强了它们与Au量子点的结合和相互作用，有效地促进了Au量子点的分离，抑制了复合，加速了光生电子-空穴对的消耗。通过调整Au的质量负载量，获得了最高的光催化活性(601.2µmolh(-1)g(-1))和降解有机污染物(80min内100%降解)。这项工作为开发高效的金属/半导体复合光催化剂用于清洁能源发电和环境修复铺平了新的道路。
Rational design and development of new-generation photocatalysts with high hydrogen evolution activity is recognized as an effective strategy to settle energy crisis. To this regard, hybrid photocatalysts of Au quantum dots embedded in rimous cadmium sulfide nanospheres are synthesized by using a simple hydrothermal process followed by photoreduction. The rimous cadmium sulfide nanospheres with rough surface and irregular fissures greatly strengthen their adhesion and interaction with Au quantum dots, which effectively facilitates the separation, restrains the recombination, and accelerates the consumption of photoinduced electron-hole pairs. Impressively, the highest photocatalytic activity for hydrogen generation (601.2 mu mol h(-1) g(-1)) and organic pollutant degradation (100% degradation in 80 min) is obtained by adjusting the Au mass loading to achieve uniform distribution. This work paves new way to the exploitation of highly efficient metal/semiconductor hybrid photocatalysts for clean energy generation and environment restoration.