典型文献
Precise control of surface oxygen vacancies in ZnO nanoparticles for extremely high acetone sensing response
文献摘要：
ZnO has been studied intensely for chemical sensors due to its high sensitivity and fast response.Here,we present a simple approach to precisely control oxygen vacancy contents to provide significantly enhanced acetone sensing performance of commercial ZnO nanopowders.A combination of H2O2 treatment and thermal annealing produces optimal surface defects with oxygen vacancies on the ZnO nanoparticles(NPs).The highest response of～27,562 was achieved for 10 ppm acetone in 0.125 M H2O2 treated/annealed ZnO NPs at the optimal working temperature of 400℃,which is significantly higher than that of reported so far in various acetone sensors based on metal oxide semiconductors(MOSs).Furthermore,first-principles calculations indicate that pre-adsorbed O formed on the surface of H2O2 treated ZnO NPs can provide favorable adsorption energy,especially for acetone detection,due to strong bidentate bonding between carbonyl C atom of acetone molecules and pre-adsorbed O on the ZnO surface.Our study demonstrates that controlling surface oxygen vacancies by H2O2 treatment and re-annealing at optimal temperature is an effective method to improve the sensing properties of commercial MOS materials.
文献关键词：
中图分类号：
作者姓名：
Jihyun LEE;Youngmoon CHOI;Byoung Joon PARK;Jeong Woo HAN;Hyun-Sook LEE;Jong Hyeok PARK;Wooyoung LEE
作者机构：
Department of Materials Science and Engineering,Yonsei University,Seoul 03722,Republic of Korea;Department of Chemical and Biological Engineering,Yonsei University,Seoul 03722,Republic of Korea;Department of Chemical Engineering,Pohang University of Science and Technology,Pohang 37673,Republic of Korea;Institute for Convergence Research and Education in Advanced Technology,Yonsei University,Seoul 03722,Republic of Korea
文献出处：
引用格式：
[1]Jihyun LEE;Youngmoon CHOI;Byoung Joon PARK;Jeong Woo HAN;Hyun-Sook LEE;Jong Hyeok PARK;Wooyoung LEE-.Precise control of surface oxygen vacancies in ZnO nanoparticles for extremely high acetone sensing response)[J].先进陶瓷（英文版）,2022(05):769-783
A类：
B类：
Precise,surface,oxygen,vacancies,ZnO,nanoparticles,extremely,acetone,sensing,response,has,been,studied,intensely,chemical,sensors,due,its,sensitivity,fast,Here,present,simple,approach,precisely,vacancy,contents,provide,significantly,enhanced,performance,commercial,nanopowders,combination,H2O2,treatment,thermal,annealing,produces,optimal,defects,NPs,highest,was,achieved,ppm,treated,annealed,working,temperature,which,higher,than,that,reported,far,various,metal,oxide,semiconductors,MOSs,Furthermore,first,principles,calculations,indicate,adsorbed,formed,favorable,adsorption,energy,especially,detection,strong,bidentate,bonding,between,carbonyl,atom,molecules,Our,study,demonstrates,controlling,by,effective,method,improve,properties,materials
AB值：
0.555089
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
