化工学报2026，Vol.77Issue(2)：998-1008,11.DOI:10.11949/0438-1157.20250939
乳化炸药爆轰法合成La2Ti2O7的表征及OER性能研究
Characterization and oxygen evolution reaction performance of La2Ti2O7 synthesized by emulsion explosive detonation
摘要
Abstract
To address the problems of high energy consumption,long cycle time,and low efficiency in the synthesis of nano-La2Ti2O7 using traditional methods,this study successfully prepared nano-La2Ti2O7 powder using emulsion explosive detonation method with La2O3 and TiO2 as precursors.The products were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),and N2 adsorption-desorption measurements.Their electrocatalytic performance for the oxygen evolution reaction(OER)was evaluated using a standard three-electrode system.The results demonstrate the successful synthesis of pure monoclinic nano-La2Ti2O7 with a particle size of 35-60 nm,uniform dispersion,and minimal agglomeration.When the precursor mass fraction was 10％,the resulting product(Sample 2)exhibited a multi-scale pore structure,which effectively facilitated the exposure of active sites and enhanced mass transport.Electrochemical tests revealed that Sample 2 exhibited superior charge transfer kinetics,the largest electrochemical active surface area(ECSA),the most favorable reaction kinetics,and the highest density of active sites,demonstrating outstanding OER catalytic performance.关键词
纳米材料/乳化炸药爆轰法/La2Ti2O7/电化学/催化/析氧反应Key words
nanomaterials/emulsion explosive detonation/La2Ti2O7/electrochemistry/catalysis/oxygen evolution reaction(OER)分类
化学化工引用本文复制引用
汪泉,鲍春晖,朱群龙,胡彬,曹英建,张家宝..乳化炸药爆轰法合成La2Ti2O7的表征及OER性能研究[J].化工学报,2026,77(2):998-1008,11.基金项目
安徽省自然科学基金项目(2408085MA006) （2408085MA006）
