Fabrication of TeNT/TeO2 heterojunction based sensor for ultrasensitive detection of NO2

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-01-15 DOI:10.1016/j.jhazmat.2025.137229

Shupeng Sun, Xinlei Li, Yanhui Sun, Nan Wang, Baoyu Huang, Xiaogan Li

{"title":"Fabrication of TeNT/TeO2 heterojunction based sensor for ultrasensitive detection of NO2","authors":"Shupeng Sun, Xinlei Li, Yanhui Sun, Nan Wang, Baoyu Huang, Xiaogan Li","doi":"10.1016/j.jhazmat.2025.137229","DOIUrl":null,"url":null,"abstract":"Tellurium nanotubes (TeNT) heterojunction with Tellurium oxide (TeO2) were prepared by in situ oxidation at elevated temperatures in air. The chemiresistive type NO2 sensor was then fabricated by depositing the synthesized TeNT/TeO2 on the integrated gold electrodes. The response of the TeNT/TeO2 based sensor to 600 ppb NO2 was 38.8%, which was about 3.2 times higher than that of the single-phase TeNT based sensor (12.1%). The response and recovery time are 39 s and 49 s, respectively, which are substantially reduced compared to those of the pristine TeNT based sensor (133 s and 336 s) and the results reported in literature. The sensor also exhibits good stability with a response deviation of less than 2% for 45 days and a good resistance to environmental disturbances. The improved sensor performance can be attributed to the heterojunction formed between TeNT and TeO2. Density Functional Theory (DFT) calculations show that the formed TeNT/TeO2 heterojunction enhances the adsorption energy (-0.671 eV) and charge transfer (0.49 |e|) between NO2 and the TeNT/TeO2.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"24 1","pages":""},"PeriodicalIF":11.3000,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hazardous Materials","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.jhazmat.2025.137229","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

Tellurium nanotubes (TeNT) heterojunction with Tellurium oxide (TeO₂) were prepared by in situ oxidation at elevated temperatures in air. The chemiresistive type NO₂ sensor was then fabricated by depositing the synthesized TeNT/TeO₂ on the integrated gold electrodes. The response of the TeNT/TeO₂ based sensor to 600 ppb NO₂ was 38.8%, which was about 3.2 times higher than that of the single-phase TeNT based sensor (12.1%). The response and recovery time are 39 s and 49 s, respectively, which are substantially reduced compared to those of the pristine TeNT based sensor (133 s and 336 s) and the results reported in literature. The sensor also exhibits good stability with a response deviation of less than 2% for 45 days and a good resistance to environmental disturbances. The improved sensor performance can be attributed to the heterojunction formed between TeNT and TeO₂. Density Functional Theory (DFT) calculations show that the formed TeNT/TeO₂ heterojunction enhances the adsorption energy (-0.671 eV) and charge transfer (0.49 |e|) between NO₂ and the TeNT/TeO₂.

Abstract Image

查看原文本刊更多论文

基于TeNT/TeO2异质结的二氧化氮超灵敏检测传感器的制备

采用高温原位氧化法制备了碲纳米管（TeNT）与氧化碲（TeO2）异质结。然后将合成的TeNT/TeO2沉积在集成金电极上制备化学型NO2传感器。基于TeNT/TeO2的传感器对600 ppb NO2的响应为38.8%，比基于单相TeNT的传感器（12.1%）高约3.2倍。响应时间和恢复时间分别为39 s和49 s，与原始的基于TeNT的传感器（133 s和336 s）和文献报道的结果相比，大大缩短了响应时间和恢复时间。该传感器还具有良好的稳定性，45天的响应偏差小于2%，具有良好的抗环境干扰能力。传感器性能的提高可归因于TeNT和TeO2之间形成的异质结。密度泛函理论（DFT）计算表明，形成的TeNT/TeO2异质结提高了NO2与TeNT/TeO2之间的吸附能（-0.671 eV）和电荷转移（0.49 |e|）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.

文献相关原料

公司名称

产品信息

阿拉丁

Sodium tellurite

阿拉丁

Cetyltrimethylammonium bromide