Interfacial engineering of holey platinum nanotubes for formic acid electrooxidation boosted water splitting  

作　　者：Zi-Xin Ge Yu Ding Tian-Jiao Wang Feng Shi Pu-Jun Jin Pei Chen Bin He Shi-Bin Yin Yu Chen 

机构地区：[1]Key Laboratory of Macromolecular Science of Shaanxi Province,Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education),Shaanxi Key Laboratory for Advanced Energy Devices,Shaanxi Engineering Lab for Advanced Energy Technology,School of Materials Science and Engineering,Shaanxi Normal University,Xi’an 710062,Shaanxi,China [2]College of New Materials and New Energies,Shenzhen Technology University,Shenzhen 518118,Guangdong,China [3]MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials,Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials,Guangxi University,Nanning 530004,Guangxi,China

出　　处：《Journal of Energy Chemistry》2023年第2期209-216,I0006,共9页能源化学（英文版）

基　　金：sponsored by the National Natural Science Foundation of China(22272103);the Natural Science Foundation of Shaanxi Province(2020JZ-23,2019KJXX-021,and 2020JM269);the Key Research and Development Program of Shaanxi(2020SF-355);the Science and Technology Innovation Team of Shaanxi Province(2022TD-35);the University Engineering Research Center of Crystal Growth and Applications of Guangdong Province(2020GCZX005);the Special Innovative Projects of Guangdong Province(2020KTSCX125);the Shenzhen Stable Supporting Program(SZWD2021015);the Fundamental Research Funds for the Central Universities(GK202202001);the Open Foundation of Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials at Guangxi University(2021GXYSOF02);the 111 Project(B14041)。

摘　　要：Both structure and interface engineering are highly effective strategies for enhancing the catalytic activity and selectivity of precious metal nanostructures.In this work,we develop a facile pyrolysis strategy to synthesize the high-quality holey platinum nanotubes(Pt-H-NTs)using nanorods-like Pt^(Ⅱ)-phenanthroline(PT)coordination compound as self-template and self-reduction precursor.Then,an up-bottom strategy is used to further synthesize polyallylamine(PA)modified Pt-H-NTs(Pt-HNTs@PA).PA modification sharply promotes the catalytic activity of Pt-H-NTs for the formic acid electrooxidation reaction(FAEOR)by the direct reaction pathway.Meanwhile,PA modification also elevates the catalytic activity of Pt-H-NTs for the hydrogen evolution reaction(HER)by the proton enrichment at electrolyte/electrode interface.Benefiting from the high catalytic activity of Pt-H-NTs@PA for both FAEOR and HER,a two-electrode FAEOR boosted water electrolysis system is fabricated by using Pt-H-NTs@PA as bifunctio nal electrocatalysts.Such FAEOR boosted water electrolysis system only requires the operational voltage of 0.47 V to achieve the high-purity hydrogen production,showing an energy-saving hydrogen production strategy compared to traditional water electrolysis system.

关 键 词：Holey platinum nanotubes Chemical functionalization Formic acid oxidation reaction Hydrogen evolution reaction Water splitting 

分 类 号：TQ116.2[化学工程—无机化工] TQ426[一般工业技术—材料科学与工程] TB383.1