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Nanomaterials and Sensors for Analysis and Detection

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Smart Materials".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 1841

Special Issue Editors


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Guest Editor
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
Interests: micro/nano SERS biosensors

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Guest Editor
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
Interests: micro/nanorobotics; micro/nanomotors

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Guest Editor
School of Chemistry, Beihang University, Beijing 100191, China
Interests: SERS sensors in life science; photocatalysis and electrocatalysis
School of Energy and Environmental Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing 100083, China
Interests: nanoscale heat transfer; nano carbon materials; phase change materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of materials science involves chemical synthesis and chemical applications, while the rapid development of nanomaterial technology can be effectively applied to biosensing detection. Micro–nanomaterial biology provides new application strategies for detection technology in many fields, such as tumor marker detection, environmental pollutant detection, surface interface component analysis, trace detection, etc. From a broader perspective, sensing technology combined with micro–nanomaterials has provided new vitality for the development of various fields. Therefore, this Special Issue aims to develop new applications, new ideas and new strategies in the fields of micro–nanomaterials, establish the intrinsic connection between micro–nanomaterials and various application fields and further promote the development of materials science and engineering.

Dr. Jie Lin
Dr. Changyong Gao
Prof. Dr. Xiaotian Wang
Prof. Dr. Lin Qiu
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • micro–nanomaterials
  • chemical synthesis
  • detection technology
  • tumor marker detection
  • environmental pollutant detection
  • trace detection
  • materials science and engineering

Published Papers (1 paper)

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Research

15 pages, 12486 KiB  
Article
SnS2 Nanosheets as a Template for 2D SnO2 Sensitive Material: Nanostructure and Surface Composition Effects
by Roman Vasiliev, Darya Kurtina, Nataliya Udalova, Vadim Platonov, Abulkosim Nasriddinov, Tatyana Shatalova, Roman Novotortsev, Xiaogan Li and Marina Rumyantseva
Materials 2022, 15(22), 8213; https://doi.org/10.3390/ma15228213 - 18 Nov 2022
Viewed by 1509
Abstract
Two-dimensional nanosheets of semiconductor metal oxides are considered as promising for use in gas sensors, because of the combination of a large surface-area, high thermal stability and high sensitivity, due to the chemisorption mechanism of gas detection. In this work, 2D SnO2 [...] Read more.
Two-dimensional nanosheets of semiconductor metal oxides are considered as promising for use in gas sensors, because of the combination of a large surface-area, high thermal stability and high sensitivity, due to the chemisorption mechanism of gas detection. In this work, 2D SnO2 nanosheets were synthesized via the oxidation of template SnS2 nanosheets obtained by surfactant-assisted one-pot solution synthesis. The 2D SnO2 was characterized using transmission and scanning electron microscopy (TEM, SEM), X-ray diffraction (XRD), low-temperature nitrogen adsorption, X-ray photoelectron spectroscopy (XPS) and IR spectroscopy. The sensor characteristics were studied when detecting model gases CO and NH3 in dry (RH25 = 0%) and humid (RH25 = 30%) air. The combination of high specific-surface-area and increased surface acidity caused by the presence of residual sulfate anions provides a high 2D SnO2 sensor’s signal towards NH3 at a low temperature of 200 °C in dry air, but at the same time causes an inversion of the sensor response when detecting NH3 in a humid atmosphere. To reveal the processes responsible for sensor-response inversion, the interaction of 2D SnO2 with ammonia was investigated using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) in dry and humid air at temperatures corresponding to the maximum “positive” and maximum “negative” sensor response. Full article
(This article belongs to the Special Issue Nanomaterials and Sensors for Analysis and Detection)
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