Platinum Decorated Titanium Dioxide Nanosheets for Efficient Photoelectrocatalytic Hydrogeu Evolution Reaction
Platinum Decorated Titanium Dioxide Nanosheets for Efficient Photoelectrocatalytic Hydrogeu Evolution Reaction
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铂修饰的二氧化钛纳米片用于高效光电催化氢演化反应
DOI：
10.15541/jim20190009
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发表时间：
2019-11
影响因子：
1.7
通讯作者：
Wang Xi
中科院分区：
文献类型：
--
作者：
Su Kun;Zhang Ya-Ru;Lu Fei;Zhang Jun;Wang Xi
采用静电吸附法将铂原子负载到二氧化钛纳米片上，制备了两种不同形貌的铂催化剂。SEM、XRD、TEM测试结果表明, 改变铂负载量可以调控铂的形貌结构。当Pt的负载量较低（0.2wt%）时，铂原子主要为半径约为2nm的纳米团簇。当铂的负载量增加到1wt%时，铂原子在二氧化钛纳米片上堆积成纳米颗粒。调控Pt负载量和纳米结构, 可以显著提高二氧化钛纳米片催化析氢反应的活性。在AM1.5太阳光照射下, 两种催化剂的塔菲尔斜率都小于100 mV/dec, 分别为56和90 mV/dec。与TiO 2 -Pt1%催化剂相比，TiO 2 -Pt 0. 2%催化剂具有更理想的金属-半导体界面，有利于光生电子向铂纳米团簇表面迁移，从而表现出更高的催化活性。该实验为高效制备铂催化剂提供了一条新途径。
: Two kinds of platinum catalysts with different morphologies were prepared by loading platinum atoms on titanium dioxide nanosheets via electrostatic adsorption. Scanning electron microscope (SEM), X-ray powder diffraction (XRD) and transmission electron microscope (TEM) characterization show that the morphology and structure of platinum could be controlled by changing the platinum loading. With low Pt loading (0.2wt%), the platinum atoms were mainly nanoclusters with a radius of about 2 nm. When the Pt loading increased to 1wt%, the platinum atoms stack into nanoparticles on the titanium dioxide nanosheets. The catalytic hydrogen evolution activity of titanium dioxide nanosheets can be improved obviously by regulating the platinum loading and nanostructure. Under AM1.5 solar light, the Tafel slope of both catalysts were less than 100 mV/dec, i.e. 56 and 90 mV/dec, respectively. Compared with TiO 2 -Pt1% catalyst, TiO 2 -Pt0.2% has a more ideal metal-semiconductor interface, which is favorable for photogenic electrons to migrate to the surface of platinum nanoclusters, and thus perform a higher catalytic activity. This experi-ment provides a new way for preparing platinum catalysts with high efficiency.
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影响因子：
7.3
作者：
Ruike Guo;Xiaoxing Xu;Yue Xia;Wei Huang;Zelin Li;Botao Teng
通讯作者：
Ruike Guo;Xiaoxing Xu;Yue Xia;Wei Huang;Zelin Li;Botao Teng
影响因子：
5.2
作者：
Momeni, Moharnad Mohsen;Ghayeb, Yousef;Ghonchegi, Zohre
通讯作者：
Ghonchegi, Zohre
DOI：
10.1016/j.jphotochem.2018.05.019
发表时间：
2018-09
期刊：
Journal of Photochemistry and Photobiology A: Chemistry
影响因子：
--
作者：
T. Tan;C. Lai;S. Hong;S. Rashid
通讯作者：
T. Tan;C. Lai;S. Hong;S. Rashid
影响因子：
7.2
作者：
Gopalakrishnan Kumar;Si-Kyung Cho;P. Sivagurunathan;Parthiban Anburajan;D. Mahapatra;Jeong-Hoon Park;A. Pugazhendhi
通讯作者：
Gopalakrishnan Kumar;Si-Kyung Cho;P. Sivagurunathan;Parthiban Anburajan;D. Mahapatra;Jeong-Hoon Park;A. Pugazhendhi
光电催化水分解：助催化剂、电解质和界面的意义
影响因子：
12.9
作者：
Ding, Chunmei;Shi, Jingying;Li, Can
通讯作者：
Li, Can