Ultra-fast phosphating synthesis of metastable crystalline phase-controllable ultra-small MPX/CNT(M = Pd, Pt, Ru) for polyalcohol electrooxidation  

作　　者：Yan Zhang Dan Zhang Yingnan Qin Juan Xiong Jiao Liu Wenhao Yu Xilei Chen Suping Li Jianping Lai Lei Wang 

机构地区：[1]Key Laboratory of Eco-chemical Engineering,Taishan Scholar Advantage and Characteristic Discipline Team of Eco-chemical Process and Technology,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China [2]Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection,College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China [3]Library,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China

出　　处：《Journal of Energy Chemistry》2022年第9期108-115,I0004,共9页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(51772162,22001143,and 52072197);the Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(2019KJC004);the Outstanding Youth Foundation of Shandong Province,China(ZR2019JQ14);the Taishan Scholar Young Talent Program(tsqn201909114,tsqn201909123);the Natural Science Foundation of Shandong Province(ZR2020YQ34);the Major Basic Research Program of Natural Science Foundation of Shandong Province under Grant(ZR2020ZD09);the Major Scientific and Technological Innovation Project(2019JZZY020405)。

摘　　要：A general approach is reported for ultra-fast phosphating synthesis of a series of ultra-small(<5 nm)noble metal phosphides(MPX/CNT,M=Pd,Pt,Ru)which are successfully produced in just 75 s for the first time.The catalytic performance of the catalysts can be optimized by controlling the nanomaterials as the metastable crystalline phases.By altering the phosphorus source under the same conditions,the hexagonal structured Pd_(7)P_(3)(NaH_(2)PO_(2).H_(2)O as P source)and monoclinic structured Pd_(6)P(Na_(4)P_(2)O_(7) as P source)can be prepared successfully.Both of them exhibit excellent polyol oxidation performance in alkaline media.Monoclinic Pd_(6)P/CNT and hexagonal Pd_(7)P_(3)/CNT have large ECSA which are confirmed as 82.1 m2 g^(-1)and 86.2 m2 g^(-1),respectively.Hexagonal Pd_(7)P_(3)/CNT has the highest mass activity of 6.14 A mgPd^(-1)(3.21 A mgPd^(-1)for Pd_(6)P/CNT)for GOR,which far exceeded Pt/C(2.81 A mgPt^(-1)).Meanwhile,the mass activity of monoclinic Pt_(5)P_(2)/CNT for EGOR achieved 12.4 A mg_(Pt)^(-1),which far exceeded Pt/C(6.8 A mg_(Pt)^(-1)).The stability test proved that the activity decay of these catalysts was negligible after the 12-hour durability test.Meanwhile,they have excellent CO anti-poisoning abilities.

关 键 词：General synthesis Metastable crystalline phase Ultra-small nanoparticles Electrocatalysis 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O643.36[理学—物理化学]