Improved photocatalytic hydrogen generation on Zn2GeO4 nanorods with high crystallinity
Improved photocatalytic hydrogen generation on Zn2GeO4 nanorods with high crystallinity
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改善高结晶度 Zn2GeO4 纳米棒的光催化制氢
DOI：
10.1016/j.apsusc.2013.09.014
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发表时间：
2013-12
影响因子：
6.7
通讯作者：
Wanyi Liu
中科院分区：
文献类型：
--
作者：
Keying Lin;Baojun Ma;Weiguang Su;Wanyi Liu
采用水热法合成了棒状Zn 2GeO 4纳米粉体，并对其在甲醇水溶液中的光催化制氢性能进行了研究。结果表明，Zn 2GeO 4的后煅烧能有效地提高其光催化活性，而Zn 2GeO 4的形貌基本不变。最佳光催化剂的析氢量为430 μmol/h/g，比未焙烧的Zn_2GeO_4的析氢量高2倍以上。XRD表明Zn 2GeO 4的结晶度提高。紫外-可见光谱和光致发光光谱证实了Zn 2GeO 4中杂质的减少。Zn 2GeO 4纳米棒的高结晶度和杂质的减少是其活性提高的主要原因。指出水热合成后煅烧是制备高结晶度、大比表面积、高活性光催化剂的有效方法。
The rod-like Zn2GeO4nanopowder was synthesized by a hydrothermal method and investigated for photocatalytic hydrogen generation from methanol aqueous solution. It is found that the post-calcination of Zn2GeO4efficiently improves the photocatalytic activity while the morphology of Zn2GeO4keeps almost unchangeable. The optimum photocatalyst Exhibits 430 μmol/h/g hydrogen evolution, which is more than 2 times higher than that of Zn2GeO4without any calcination. XRD show the improvement of crystallinity of Zn2GeO4. UV–vis and photoluminescence spectra demonstrate the reduction of impurity in Zn2GeO4. It is supposed that the higher crystallinity and the reduction of impurity of Zn2GeO4nanorod are mainly responsible to the improved activity. It is put forward that hydrothermal synthesis and then post-calcination is an efficient method to prepare highly active photocatalyst with high crystallinity and large surface areas.
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DOI：
10.1021/jp063068v
发表时间：
2006-08
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
Yungi Lee;Tomoaki Watanabe;T. Takata;M. Hara;M. Yoshimura;K. Domen
通讯作者：
Yungi Lee;Tomoaki Watanabe;T. Takata;M. Hara;M. Yoshimura;K. Domen
影响因子：
3.7
作者：
B. Ma;Jinhui Yang;Hongxian Han;Jian-tao Wang;Xiaohong Zhang;Can Li
通讯作者：
B. Ma;Jinhui Yang;Hongxian Han;Jian-tao Wang;Xiaohong Zhang;Can Li
影响因子：
7.3
作者：
Chiarello, Gian Luca;Aguirre, Myriam H.;Selli, Elena
通讯作者：
Selli, Elena
影响因子：
--
作者：
T. Giraldi;G. V. F. Santos;V. R. Mendonça;C. Ribeiro;I. T. Weber
通讯作者：
T. Giraldi;G. V. F. Santos;V. R. Mendonça;C. Ribeiro;I. T. Weber
影响因子：
3.3
作者：
Joo, J;Kwon, SG;Hyeon, T
通讯作者：
Hyeon, T