水诱导磷化镍腐蚀及腐蚀抑制  

Nickel Phosphide Corrosion Induced by Water and Corrosion Inhibition

作　　者：杨博 吕功煊[1] 张旭强[1] 马建泰[3] YANG Bo;LÜGong-Xuan;ZHANG Xu-Qiang;MA Jian-Tai(State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,兰州730000 [2]中国科学院大学,北京100049 [3]兰州大学化学化工学院,兰州730000

出　　处：《无机化学学报》2022年第7期1337-1349,共13页Chinese Journal of Inorganic Chemistry

基　　金：国家重点研发计划(No.2018YFB1502004)资助。

摘　　要：过渡金属磷化物作为助催化剂广泛应用于电催化、光(电)催化、电化学储能等领域,但其在水介质中的稳定性研究较少。我们以磷化镍(Ni_(x)P)作为研究对象,详细研究了所制备的Ni_(x)P与水的反应行为。研究结果表明:Ni_(x)P与水反应生成H_(2),同时自身被氧化生成PO_(4)^(3-)和Ni^(2+),发生严重的化学腐蚀。腐蚀的程度与Ni_(x)P的晶体结构、元素比例等因素有关。通过在Ni_(x)P表面沉积NiO、ZnO、TiO_(2)保护层可显著抑制Ni_(x)P的化学腐蚀,提高Ni_(x)P在水介质中的抗腐蚀能力。Transition metal phosphides as cocatalysts have been widely used in electrocatalysis, photoelectrocatalysis, and electrochemical energy storage. But its stability in water medium is seldom studied. Nickel phosphide(Ni_(x)P)was synthesized and the reaction of Ni_(x)P with H_(2)O was studied in detail. The results showed that serious corrosion of Ni_(x)P occurred when Ni_(x)P was dispersed in the water while H_(2)was generated. At the same time, the corrosion products of PO_(4)^(3-) and Ni^(2+) ions were detected. Such Ni_(x)P corrosion in water is highly dependent on Ni_(x)P crystal structure and components. The deposition of NiO, ZnO, and TiO_(2) metal oxide protective layer on Ni_(x)P can improve the anticorrosion ability of Ni_(x)P in the aqueous medium.

关 键 词：过渡金属磷化物 腐蚀 金属氧化物保护层 稳定性 

分 类 号：O613.62[理学—无机化学] TQ126.33[理学—化学]