ZnO/Au hybrid nanoarchitectures: wet-chemical synthesis and structurally enhanced photocatalytic performance.
ZnO/Au hybrid nanoarchitectures: wet-chemical synthesis and structurally enhanced photocatalytic performance.
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DOI：
10.1021/es902568h
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发表时间：
2009-10
影响因子：
11.4
通讯作者：
Qian Wang;B. Geng;Shaozhen Wang
中科院分区：
文献类型：
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作者：
Qian Wang;B. Geng;Shaozhen Wang
介绍了一种制备大面积金包覆氧化锌纳米棒的简便方法，该方法具有可调控金属纳米晶的空间分布和浓度的特点。负载Au纳米颗粒的ZnO纳米棒在15 min内对罗丹明B具有完全的催化降解作用，明显优于其他TiO（2）和ZnO基光催化剂。此外，ZnO/Au纳米复合材料对水中环境持久性有机污染物4-氯酚的去除率在300 min左右。高质量ZnO纳米棒的一维结构和大面积贵金属修饰是其光催化性能较好的原因。这些有前途的结果将使这种光催化剂在水溶液中的有机污染物的环境净化的特殊选择。这种方法也可能产生一类新的多功能材料，可能应用于能量转换装置，生物功能材料和红外发射/检测装置。
A facile method is introduced to prepare large-area gold-coated ZnO nanorods, featuring the capability to tailor both the spatial distribution and the concentration of metal nanocrystals. The Au nanoparticles-loaded ZnO nanorods exhibit complete catalysis-degradation Rhodamine B within 15 min, which substantially surpass other TiO(2)- and ZnO-based photocatalysts. Furthermore, The ZnO/Au nanocomposites can removal about 91% of environmental persistent 4-chlorophenol from water after 300 min irradiation. The better photocatalytic performance is attributed to the one-dimentional structure of high-quality ZnO nanorods and the large-area noble metal decoration. These promising results would make this photocatalyst an exceptional choice for the environmental purification of organic pollutants in aqueous solution. This approach may also give rise to a new class of multifunctional materials with possible applications in energy-conversion devices, biofunctionalized materials, and infrared-emitting/detecting devices.