Preparation of noble metal nanoparticles modified hollow SnO2 dodecahedrons for highly selective hydrogen detection

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-05-11 DOI:10.1016/j.vacuum.2025.114407

Chen Chen , Junhai Wang , Yu Sun , Areeje Fatima , Jiarui Huang

{"title":"Preparation of noble metal nanoparticles modified hollow SnO2 dodecahedrons for highly selective hydrogen detection","authors":"Chen Chen , Junhai Wang , Yu Sun , Areeje Fatima , Jiarui Huang","doi":"10.1016/j.vacuum.2025.114407","DOIUrl":null,"url":null,"abstract":"<div><div>To develop high-responsive and selective sensors for H2 detection at low concentration is on demand. Here, ammonium phosphotungstate hydrate dodecahedrons were used as hard templates to prepare hollow SnO2 dodecahedron with a large specific surface area. Then, Pd/SnO2, Ag/SnO2 and Pt/SnO2 hollow dodecahedrons were prepared via a liquid-phase reduction method by uniformly decorating the SnO2 hollow dodecahedrons with finely dispersed Pd, Ag and Pt nanoparticles, respectively. The morphology, microstructure, and gas-sensing characteristics of the prepared sensing materials were analyzed. Compared with the SnO2, Ag/SnO2 and Pt/SnO2 hollow dodecahedron sensors, the Pd/SnO2 hollow dodecahedron sensor exhibited a better response value and linearity to 0.1 % H2 at the optimal operating temperature (160 °C), and a significant response (2.6) and shorter response/recovery time (15 s/9 s) to 0.1 % H2 even at low operating temperature (80 °C). Moreover, this sensor exhibits high selectivity and long-term stability for H2 at low operating temperatures (80 °C). The outstanding performance of this sensor is due to its exceptional microstructure, namely the hollow dodecahedron structure with a high specific surface area, and the catalytic properties of Pd nanoparticles, as well as the synergistic interplay between crystal structure and morphology.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"239 ","pages":"Article 114407"},"PeriodicalIF":3.8000,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacuum","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0042207X25003975","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

To develop high-responsive and selective sensors for H₂ detection at low concentration is on demand. Here, ammonium phosphotungstate hydrate dodecahedrons were used as hard templates to prepare hollow SnO₂ dodecahedron with a large specific surface area. Then, Pd/SnO₂, Ag/SnO₂ and Pt/SnO₂ hollow dodecahedrons were prepared via a liquid-phase reduction method by uniformly decorating the SnO₂ hollow dodecahedrons with finely dispersed Pd, Ag and Pt nanoparticles, respectively. The morphology, microstructure, and gas-sensing characteristics of the prepared sensing materials were analyzed. Compared with the SnO₂, Ag/SnO₂ and Pt/SnO₂ hollow dodecahedron sensors, the Pd/SnO₂ hollow dodecahedron sensor exhibited a better response value and linearity to 0.1 % H₂ at the optimal operating temperature (160 °C), and a significant response (2.6) and shorter response/recovery time (15 s/9 s) to 0.1 % H₂ even at low operating temperature (80 °C). Moreover, this sensor exhibits high selectivity and long-term stability for H₂ at low operating temperatures (80 °C). The outstanding performance of this sensor is due to its exceptional microstructure, namely the hollow dodecahedron structure with a high specific surface area, and the catalytic properties of Pd nanoparticles, as well as the synergistic interplay between crystal structure and morphology.

查看原文本刊更多论文

高选择性氢探测用贵金属纳米粒子修饰的空心二氧化锡十二面体的制备

开发高响应、高选择性的低浓度氢气检测传感器是迫切需要的。本文以水合磷钨酸铵十二面体为硬模板，制备了具有较大比表面积的空心二氧化锡十二面体。采用液相还原法制备Pd/SnO2、Ag/SnO2和Pt/SnO2空心十二面体，分别用分散较细的Pd、Ag和Pt纳米粒子对SnO2空心十二面体进行均匀修饰。分析了制备的传感材料的形貌、微观结构和气敏特性。与SnO2、Ag/SnO2和Pt/SnO2空心十二面体传感器相比，Pd/SnO2空心十二面体传感器在最佳工作温度（160℃）下对0.1% H2具有更好的响应值和线性度，在较低工作温度（80℃）下对0.1% H2具有显著的响应（2.6）和较短的响应/恢复时间（15 s/9 s）。此外，该传感器在低工作温度（80°C）下对H2具有高选择性和长期稳定性。该传感器的优异性能源于其独特的微观结构，即具有高比表面积的空心十二面体结构，以及Pd纳米颗粒的催化性能，以及晶体结构和形貌之间的协同相互作用。

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

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.