花生壳基多孔碳负载Pd-Co催化剂应用于碱性介质中电氧化甲醇  

Peanut shell⁃based porous carbon supported Pd⁃Co catalyst for electrooxidation of methanol in alkaline media

作　　者：霍朝晖 韦雪蓉 黄勇 陈泽宇 陈伟冰 张绮彤 张刚 温耿龙 石俊杰 HUO Zhao‑Hui;WEI Xue‑Rong;HUANG Yong;CHEN Ze‑Yu;CHEN Wei‑Bing;ZHANG Qi‑Tong;ZHANG Gang;WEN Geng‑Long;SHI Jun‑Jie(School of Chemistry and Materials Science,Guangdong University of Education,Guangzhou 510303,China;Engineering Technology Development Center of Advanced Materials&Energy Saving and Emission Reduction in Guangdong Colleges and Universities,Guangzhou 510303,China;Shenzhen Fangrun Environmental Technology Co.,Ltd.,Shenzhen,Guangdong 518107,China)

机构地区：[1]广东第二师范学院化学与材料科学学院,广州510303 [2]广东高校先进材料与节能减排工程技术开发中心,广州510303 [3]深圳方润环境科技有限公司,深圳518107

出　　处：《无机化学学报》2023年第10期2020-2032,共13页Chinese Journal of Inorganic Chemistry

基　　金：广州市基础与应用基础项目(No.202102020424);大学生创新创业训练计划项目(No.S202214278030);广东省科技创新战略专项资金“(攀登计划”项目,No.pdjh2022b0385);广东省普通高校重点科研项目(No.2021KCXTD086);广东省普通高校特色创新项目(No.2022KTSCX090)资助。

摘　　要：以花生壳为原料,经KOH活化制备花生壳基多孔碳(HC)。氮气吸附-脱附研究表明,所获得的多孔碳的总表面积高达1645 m^(2)·g^(-1)。采用浸渍还原法制备了以HC为载体的Pd-Co/HC催化剂。X射线衍射(XRD)和X射线光电子能谱(XPS)分析表明,催化剂中的Co主要以Co和Co O的形式存在,Co进入Pd的晶格并形成Pd-Co合金。Pd-Co/HC_(0.5)-700的透射电子显微镜(TEM)结果显示,Pd-Co纳米颗粒具有较小粒径(约4 nm)且成功地分散在HC上。Pd-Co/HC_(0.5)-700在碱性介质中电催化氧化甲醇时表现出优秀的电催化活性、稳定性和CO耐受性,这种显著的高性能可以归因于生物质载体大的表面积和Co的成功掺杂。Peanut shells were used as raw materials and activated to peanut shell‑based porous carbon(HC)by KOH.Nitrogen adsorption‑desorption studies showed that the obtained porous carbon featured a total surface area as high as 1645 m^(2)·g^(-1).Pd‑Co/HC catalyst was prepared by the impregnation reduction method,in which HC was the carrier.X‑ray diffraction(XRD)and X‑ray photoelectron spectroscopy(XPS)analysis demonstrated that Co in the catalyst was mainly in the form of Co and CoO,and Co was entered into the crystal lattice of Pd and formed a Pd‑Co alloy.The TEM image of Pd‑Co/HC_(0.5)‑700 showed that numerous Pd‑Co nanoparticles were successfully dispersed in the prepared porous carbon with a small particle size(ca.4 nm).Pd‑Co/HC_(0.5)‑700 exhibited apparent electrocatalytic activity,CO tolerance,and stability towards methanol electrooxidation in alkaline media.This remarkable high performance can be attributed to the large surface area of the biomass carrier and the doping of Co into Pd.

关 键 词：花生壳 多孔碳 Pd-Co合金 甲醇电氧化 

分 类 号：O614.823[理学—无机化学] O614.812[理学—化学]