Controllable photochemical synthesis of amorphous Ni(OH)2 as hydrogen production cocatalyst using inorganic phosphorous acid as sacrificial agent

作     者：Dandan Li Yuming Dong Guangli Wang Pingping Jiang Feiyan Zhang Huizhen Zhang Ji Li Jinze Lyu Yan Wang Qingyun Liu 李丹丹;董玉明;王光丽;蒋平平;张飞燕;张会珍;李激;吕金泽;王燕;刘青云

作者机构：International Joint Research Center for Photo-responsive Molecules and MaterialsSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122JiangsuChina Jiangsu Key Laboratory of Anaerobic BiotechnologySchool of Environment and Civil EngineeringJiangnan UniversityWuxi 214122JiangsuChina College of Chemical and Environmental EngineeringShandong University of Science and TechnologyQingdao 266590ShandongChina 

基　　金：国家自然科学基金(21676123,21575052) 江苏省自然科学基金(BK20161127) 中央高校基本科研业务费专项资金(JUSRP51623A) 食品科学与技术国家一流学科计划(JUFSTR20180301) 山东省精细化学品清洁合成重点实验室开放研究基金(ZDSYS-KF201504) 江南大学生物质转化技术国际联合实验室和教育部111引智基地(B13025) 江苏省研究生科研与实践创新计划项目(KYCX19_1874) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第5期

页      码：889-897页

摘      要：Loading of cocatalysts can effectively inhibit the recombination of photogenerated carriers in photocatalysts and greatly improve the photocatalytic hydrogen production rate. Cocatalysts can be deposited at the outlet points of electrons using a photochemical method, which is beneficial for the following photocatalytic hydrogen production reaction. H2PO2^– has been used in the photochemical reduction of transition metals because of its special properties. However, the particles formed in the presence of H2PO2^– are very large and highly crystalline, which may inhibit the activity of photocatalysts. In this study, we designed a new method for synthesizing photocatalysts by photodeposition using some other phosphates, aiming to prepare controllable weakly crystalline and small-size cocatalysts to improve the hydrogen production activity. The cocatalyst prepared using H2PO3^– as an inorganic sacrificial agent has an amorphous structure and an average size of about 10 nm. The optimal photocatalytic hydrogen production rate of the obtained Ni(OH)2/g-C3N4(4.36 wt%) is 13707.86 μmol·g^-1·h^-1, which is even higher than the activity of Pt-4.36 wt%/g-C3N4(11210.93 μmol·g^-1·h^-1). Mechanistic studies show that loading of Ni(OH)2 can efficiently accelerate the separation and transfer efficiency of photogenerated charge carriers.

主 题 词：Photocatalysis Photodeposition Hydrogen production Water splitting Ni(OH)2/g-C3N4 

学科分类：081702[081702] 081704[081704] 081705[081705] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(19)63499-6

馆 藏 号：203879040...