摘要
碳纳米球因其良好的化学稳定性、高比表面积及优异的环境友好性,在环境催化领域备受关注;α-Fe_(2)O_(3)是一种潜在的优良的PEC分解水光阳极材料,引起了人们的广泛关注。本次实验采用无水葡萄糖、聚丙烯酰胺(APAM)及六水合三氯化铁(FeCl_(3)·6H_(2)O)为原料,通过水热法合成碳纳米球(CNs)、Fe_(2)O_(3)/CNs,并系统探究FeCl_(3)·6H_(2)O浓度对其形貌与性能的影响。通过XRD、FT-IR等表征手段以及光电化学测试(IT,LSV,EIS)评估材料的光电转换效率、载流子迁移率及电极/溶液界面特性。研究结果表明,FeCl_(3)·6H_(2)O浓度对碳纳米球的光电化学性能具有显著的调控作用,当FeCl_(3)·6H_(2)O浓度为0.07 mol/L时,样品表现出最优的光电流(IT)、最低的电荷转移电阻(EIS)及高效的载流子分离效率,表明其光电催化活性最佳。
Carbon nanospheres have attracted much attention in the field of environmental catalysis due to their good chemical stability,high specific surface area and excellent environmental friendliness.α-Fe_(2)O_(3) is a potential excellent PEC water decomposition photoanode material,which has attracted widespread attention.In this experiment,carbon nanospheres(CNs)and Fe_(2)O_(3)/CNs were synthesized by hydrothermal method using anhydrous glucose,polyacrylamide(APAM)and ferric chloride hexahydrate(FeCl_(3)·6H_(2)O)as raw materials,and the effects of FeCl_(3)·6H_(2)O concentration on their morphology and properties were systematically explored.The photoelectric conversion efficiency of materials was evaluated by XRD,FT-IR and other characterization methods,as well as photoelectrochemical tests(IT,LSV,EIS).Carrier mobility and electrode/solution interface properties.The results showed that the FeCl_(3)·6H_(2)O concentration had a significant regulatory effect on the photoelectrochemical performance of carbon nanospheres:when the FeCl_(3)·6H_(2)O concentration was 0.07M,the samples exhibited the optimal photocurrent(IT),the lowest charge transfer resistance(EIS)and the efficient carrier separation efficiency,indicating that the photocatalytic activity was the best.
作者
杨镔序
李东
王佳瑜
白云
王朝辉
YANG Binxu;LI Dong;WANG Jiayu;BAI Yun;WANG Chaohui(School of Materials Science and Engineering,North Minzu University,Ningxia Yinchuan 750021,China)
出处
《江西化工》
2026年第1期78-81,86,共5页
Jiangxi Chemical Industry
基金
宁夏回族自治区区级创新项目(S202411407011)。
关键词
六水合三氯化铁
碳纳米球
水热法
光电化学
Ferric chloride hexahydrate
Carbon nanospheres
Hydrothermal method
Photoelectrochemistry
