燃料化学学报（中英文）2026，Vol.54Issue(1)：20-30,11.DOI:10.1016/S1872-5813(25)60590-1
Na0.9Mg0.45T3.55O8-Na2Ni2Ti6O16固溶体的制备及光催化CO2还原性能研究
Facile synthesis of Na0.9Mg0.45Ti3.55O8-Na2Ni2Ti6O16 solid solutions for improving photocatalytic CO2 reduction
摘要
Abstract
In this study,a straightforward one-step hydrothermal method was successfully utilized to synthesize the solid solution Na0.9Mg0.45Ti3.55O8-Na2Ni2Ti6O16(NNMTO-x),where x denotes the molar percentage of Na2Ni2Ti6O16(NNTO)within Na0.9Mg0.45Ti3.55O8(NMTO),with x values of 10,20,30,40,and 50.Both XPS(X-ray Photoelectron Spectroscopy)and EDX(Energy Dispersive X-ray Spectroscopy)analyses unequivocally validated the formation of the NNMTO-x solid solutions.It was observed that when x is below 40,the NNMTO-x solid solution retains the structural characteristics of the original NMTO.However,beyond this threshold,significant alterations in crystal morphology were noted,accompanied by a noticeable decline in photocatalytic activity.Notably,the absorption edge of NNMTO-x(x＜40)exhibited a shift towards the visible-light spectrum,thereby substantially broadening the absorption range.The findings highlight that NNMTO-30 possesses the most pronounced photocatalytic activity for the reduction of CO2.Specifically,after a 6 h irradiation period,the production rates of CO and CH4 were recorded at 42.38 and 1.47 μmol/g,respectively.This investigation provides pivotal insights that are instrumental in the advancement of highly efficient and stable photocatalysts tailored for CO2 reduction processes.关键词
光催化转化/水热法/光相应范围/固溶体/电荷分离Key words
photocatalytic conversion/hydrothermal method/optical response range/solid solution/charge separation分类
化学化工引用本文复制引用
王景州,姚陈忠,张喜生,马紫微,李霖峰..Na0.9Mg0.45T3.55O8-Na2Ni2Ti6O16固溶体的制备及光催化CO2还原性能研究[J].燃料化学学报（中英文）,2026,54(1):20-30,11.基金项目
Supported by the Doctoral Research Start-up Project of Yuncheng University(YQ-2023067),Project of Shanxi Natural Science Foundation(202303021211189),Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Provinces(20220036),Shanxi Province Intelligent Optoelectronic Sensing Application Technology Innovation Center and Shanxi Province Optoelectronic Information Science and Technology Laboratory,Yuncheng University. （YQ-2023067）
