Cong Qin , Zhanxiang Wei , Xiaoyan Zhao , Jianliang Cao , Yan Wang
{"title":"基于 MOFs 衍生的掺锰 In2O3 中空纳米管的高温氢传感器","authors":"Cong Qin , Zhanxiang Wei , Xiaoyan Zhao , Jianliang Cao , Yan Wang","doi":"10.1016/j.ijhydene.2024.06.371","DOIUrl":null,"url":null,"abstract":"<div><p>Developing high-temperature hydrogen (H<sub>2</sub>) sensors with fast response speed is urgently demanded in harsh application environments, especially for chemical industries and the aerospace field. Herein, we have reported a facile strategy to synthesize Mn-doped In<sub>2</sub>O<sub>3</sub> hollow nanotubes (Mn-In<sub>2</sub>O<sub>3</sub>) by solvothermal and annealing route using In-MOFs as precursors. The experimental results indicate that the obtained products possess hollow nanotube structures with plenty of holes and Mn doping greatly boosts the gas-sensing performance of In<sub>2</sub>O<sub>3</sub>-based sensors towards H<sub>2</sub>. In particular, the responses of 3 mol% Mn-In<sub>2</sub>O<sub>3</sub> are 2.57 and 2.3 towards 50 ppm H<sub>2</sub> at 360 °C and 400 °C, respectively, which are much higher than those of bare In<sub>2</sub>O<sub>3</sub> hollow nanotubes. Besides, the sensor based on 3 mol% Mn-In<sub>2</sub>O<sub>3</sub> exhibits a low limit of detection (25 ppb), excellent selectivity, rapid response/recovery speed (∼4 and ∼15 s@20 ppm), and excellent stability at high temperature (360 °C). Such enhancement of H<sub>2</sub>-sensing properties can be put down to the hollow structure derived from In-MOFs and abundant oxygen vacancy defects produced by Mn doping. The Mn-In<sub>2</sub>O<sub>3</sub> hollow nanotubes could be regarded as promising materials for selectively detecting H<sub>2</sub> in a wide range of concentrations.</p></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-temperature hydrogen sensor based on MOFs-derived Mn-doped In2O3 hollow nanotubes\",\"authors\":\"Cong Qin , Zhanxiang Wei , Xiaoyan Zhao , Jianliang Cao , Yan Wang\",\"doi\":\"10.1016/j.ijhydene.2024.06.371\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Developing high-temperature hydrogen (H<sub>2</sub>) sensors with fast response speed is urgently demanded in harsh application environments, especially for chemical industries and the aerospace field. Herein, we have reported a facile strategy to synthesize Mn-doped In<sub>2</sub>O<sub>3</sub> hollow nanotubes (Mn-In<sub>2</sub>O<sub>3</sub>) by solvothermal and annealing route using In-MOFs as precursors. The experimental results indicate that the obtained products possess hollow nanotube structures with plenty of holes and Mn doping greatly boosts the gas-sensing performance of In<sub>2</sub>O<sub>3</sub>-based sensors towards H<sub>2</sub>. In particular, the responses of 3 mol% Mn-In<sub>2</sub>O<sub>3</sub> are 2.57 and 2.3 towards 50 ppm H<sub>2</sub> at 360 °C and 400 °C, respectively, which are much higher than those of bare In<sub>2</sub>O<sub>3</sub> hollow nanotubes. Besides, the sensor based on 3 mol% Mn-In<sub>2</sub>O<sub>3</sub> exhibits a low limit of detection (25 ppb), excellent selectivity, rapid response/recovery speed (∼4 and ∼15 s@20 ppm), and excellent stability at high temperature (360 °C). Such enhancement of H<sub>2</sub>-sensing properties can be put down to the hollow structure derived from In-MOFs and abundant oxygen vacancy defects produced by Mn doping. The Mn-In<sub>2</sub>O<sub>3</sub> hollow nanotubes could be regarded as promising materials for selectively detecting H<sub>2</sub> in a wide range of concentrations.</p></div>\",\"PeriodicalId\":337,\"journal\":{\"name\":\"International Journal of Hydrogen Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Hydrogen Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0360319924026107\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319924026107","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
High-temperature hydrogen sensor based on MOFs-derived Mn-doped In2O3 hollow nanotubes
Developing high-temperature hydrogen (H2) sensors with fast response speed is urgently demanded in harsh application environments, especially for chemical industries and the aerospace field. Herein, we have reported a facile strategy to synthesize Mn-doped In2O3 hollow nanotubes (Mn-In2O3) by solvothermal and annealing route using In-MOFs as precursors. The experimental results indicate that the obtained products possess hollow nanotube structures with plenty of holes and Mn doping greatly boosts the gas-sensing performance of In2O3-based sensors towards H2. In particular, the responses of 3 mol% Mn-In2O3 are 2.57 and 2.3 towards 50 ppm H2 at 360 °C and 400 °C, respectively, which are much higher than those of bare In2O3 hollow nanotubes. Besides, the sensor based on 3 mol% Mn-In2O3 exhibits a low limit of detection (25 ppb), excellent selectivity, rapid response/recovery speed (∼4 and ∼15 s@20 ppm), and excellent stability at high temperature (360 °C). Such enhancement of H2-sensing properties can be put down to the hollow structure derived from In-MOFs and abundant oxygen vacancy defects produced by Mn doping. The Mn-In2O3 hollow nanotubes could be regarded as promising materials for selectively detecting H2 in a wide range of concentrations.
期刊介绍:
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.