Black Phosphorus-Based Compound with Few Layers for Photocatalytic Water Oxidation
Black Phosphorus-Based Compound with Few Layers for Photocatalytic Water Oxidation
复制标题
用于光催化水氧化的层数少的黑磷基化合物
DOI：
10.1002/cctc.201800555
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发表时间：
2018
期刊：
影响因子：
4.5
通讯作者：
Yamashita Hiromi
中科院分区：
文献类型：
--
作者：
Yan Junqing;Ji Yujin;Kong Lingqiao;Li Youyong;Navlani-Garcia Miriam;Liu Shengzhong;Kuwahara Yasutaka;Mori Kohsuke;Che Michel;Yamashita Hiromi
虽然黑磷（BP）是一种有趣的具有高空穴迁移率的二维纳米片材料，但其在光催化水氧化放氧方面的应用尚未见报道。本文首次报道了BP与还原性氢氧化物Ni（OH）2偶联的使用。开发的光辅助工艺证实，BP XPS测量证实，BP的氧化态通过光辅助加载方法降低。所制备的P-Ni（OH）2样品具有稳定、高效的光催化分解水产氧性能。在0.1M Na2S2O4溶液中模拟太阳光照射下，O2的产率可达15.7 μ mol/（gcatalysth）或224.3 μ mol/（gBP h）。 密度泛函理论（DFT）计算表明，电子和空穴分别向BP和Ni（OH）2表面移动。P-Ni（OH）2的自极化特性保证了BP的稳定性，实现了光催化水制氢。
Although black phosphorus (BP) is an interesting 2D nanosheet material with a high hole mobility, its application in the photocatalytic water oxidation for O2evolution is not reported yet. Herein the use of BP coupled with a reductive hydroxide, Ni(OH)2, is reported for the first time. The developed photo‐assisted process confirms that the BP XPS measurements confirm that the oxidation state of BP is reduced through the photo‐assisted loading method. The obtained P−Ni(OH)2samples present the steady and efficient photocatalytic water splitting for O2generation. Under the simulated sunlight irradiation in 0.1 M Na2S2O4solution, the O2generation rate can reach up to 15.7 μmol/(gcatalyst*h) or 224.3 μmol/(gBP*h). The density functional theory (DFT) calculation suggests that the electrons and holes move to surface of BP and Ni(OH)2, respectively. The merit of self‐polarization of P−Ni(OH)2ensures the stability of BP and achieves the photocatalytic O2generation from water.