催化活性可控CoV_(2)O_(6)/MoS_(2-x)Se_(x)异质结结构的合成及其室温下ppb级NO_(2)的气体检测  

Synthesis of CoV_(2)O_(6)/MoS_(2-x)Se_(x)Heterojunction Structures with Controllable Catalytic Activity and Its Gas Detection of ppb level NO_(2)at Room Temperature

作　　者：杨蓉蓉 高淳晓 张传涛 于灵敏[2] 阴明利 YANG Rongrong;GAO Chunxiao;ZHANG Chuantao;YU Lingmin;YIN Mingli(School of Foundation,Xi’an Technological University,Xi’an 710021,China;School of Material and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学基础学院,西安710021 [2]西安工业大学材料与化工学院,西安710021

出　　处：《西安工业大学学报》2025年第1期43-52,共10页Journal of Xi’an Technological University

基　　金：国家自然科学基金项目(62171359);陕西省教育厅服务地方科研计划项目(19JC020);陕西省科技厅产业研究项目(2021GY-227);陕西省自然科学基金项目(2017JM2023)。

摘　　要：为了实现单金属氧化物在室温下对目标气体的检测,本文采用简单的湿化学方法通过调节生长时间合成了催化活性可控的一维双金属氧化物CoV_(2)O_(6)纳米棒材料,实现了近室温40℃下对NO_(2)气体的检测。为了进一步实现在室温下对低浓度NO_(2)气体的检测,利用p型MoS_(2-x)Se_(x)纳米材料对n型CoV_(2)O_(6)纳米棒进行修饰。气敏性能结果表明,最佳的CoV_(2)O_(6)/MoS_(2-x)Se_(x)异质结结构对1 ppm NO_(2)的响应可达到7.5%,对NO_(2)气体的理论检测限可低至200 ppb。The study aims to realize the detection of the target gas with single metal oxides at room temperature.A simple wet chemical method was used to synthesize one dimensional bimetallic oxide CoV_(2)O_(6)nanorods with controllable catalytic activity through adjusting the growth time,with which NO_(2)gas was detected at near room temperature 40℃.For the detection of low concentration NO_(2)at room temperature,n type CoV_(2)O_(6)nanorods were modified with p type MoS_(2-x)Se_(x) nanomaterials.The gas sensitivity results show that the response of the optimal CoV_(2)O_(6)/MoS_(2-x)Se_(x) heterojunction structure to 1 ppm NO_(2)can reach 7.5%,and the theoretical detection limit for NO_(2)gas can be as low as 200 ppb.

关 键 词：CoV_(2)O_(6) MoS_(2-x)Se_(x) 异质结结构 室温 NO_(2) 气体传感器 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置] X831[自动化与计算机技术—控制科学与工程]