Pt掺杂对Ti/SnO_(2)-Sb-Nd纳米球状电极性能的影响  

Effect of Pt doping on properties of Ti/SnO_(2)-Sb-Nd nano-spherical electrodes

作　　者：李阳 丁家正[1,2] 谢文玉 李长刚 梁家豪 LI Yang;DING Jiazheng;XIE Wenyu;LI Changgang;LIANG Jiahao(Technology Research Center for Petrochemical Pollution Control of Guangdong Province,School of Environmental Science and Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]广东石油化工学院环境科学与工程学院广东省石油化工污染控制工程技术研究中心,广东茂名525000 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《应用化工》2024年第9期2071-2077,共7页Applied Chemical Industry

基　　金：国家自然科学基金面上项目(22278434);茂名市科技计划项目(2022S041);广东石油化工学院人才引进项目(RC-XJ2022000702)。

摘　　要：采用一步水热法成功制备出不同Pt掺杂量下Ti/SnO_(2)-Sb-Nd-Pt纳米球状电极,通过SEM、XRD和XPS表征电极表面的形貌、结构和化学组成,LSV、CV和加速寿命(ALT)测试电极的电化学性能和稳定性,并通过降解硝基苯(NB)能力验证电极催化活性。结果表明,Pt掺杂不会改变电极的SnO_(2)晶型结构,适量Pt掺杂可以使电极表面涂层更加均匀致密,提高电极稳定性,但降低了涂层中吸附氧含量,使得电极催化活性降低。掺杂1.5%Pt后,电极ALT由28.0 min延长至78.2 h,虽然NB去除率由96.53%降至80.61%,但在电极实际使用寿命内,NB理论降解总量由62.6 mg/cm^(2)增至8 754.1 mg/cm^(2)。显示了该电极具有良好的应用潜力,为开发高效、稳定的电极材料提供了参考。Using one-step hydrothermal synthesis to successfully prepare Ti/SnO_(2)-Sb-Nd-Pt nanosphere electrodes with different Pt doping amounts.SEM,XRD and XPS were applied to characterize the surface morphology,structure and chemical composition of the electrodes,respectively.The electrochemical activity and stability of the electrodes were characterized via LSV,CV and accelerated service life test(ALT).The performance for NB degradation was also studied.Results showed that an appropriate amount of Pt doping formed a uniform and compact coating on the electrode surface,which improved the stability of the electrode.Although the Pt doping did not change the crystal structure of SnO_(2),it also reduced the adsorbed oxygen content in the coating and reduced the catalytic activity of the electrode.After 1.5%Pt doping,the ALT of the electrodes was extended from 28.0 min to 78.2 h;although the NB removal rate decreased from 96.53%to 80.61%,the total amount of theoretical degradation of NB in the actual service life increased from 62.6 mg/cm^(2) to 8754.1 mg/cm^(2).These findings reveal good application potential for the electrodes and provide a reference for developing efficient and stable electrode materials.

关 键 词：Ti/SnO_(2)-Sb-Nd电极 PT掺杂 表征 电催化性能 稳定性 

分 类 号：TQ150.1[化学工程—电化学工业] X703.1[环境科学与工程—环境工程]