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Sensitive Materials for Advanced Sensing Technology
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Sensitive Materials for Advanced Sensing Technology

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

Deadline for manuscript submissions: closed (20 November 2023) | Viewed by 3092

Special Issue Editors

Dr. Minggang Zhao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Ocean University of China, Qingdao, China
Interests: semiconductor materials; electrochemical sensing; colorimetric sensing; seawater detection; biological sensing; heavy metals; organic pollutants
Dr. Ye Ma

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Ocean University of China, Qingdao, China
Interests: noble metal nanoparticles; metamaterials; self-assemblies; optical sensing; electrochemical sensing

Special Issue Information

Dear Colleagues,

Sensitive materials and sensing technology are at the interface of human society and the physical world. The unique compositions and structures render these materials responsive to ambient stimuli, such as chemical, light, temperature, electric voltage or current, mechanical stress, magnetic field, etc. Additionally, sensing technology offers various methods of utilizing these materials in solving the analytical problems of medicine, environment, food, industries, and security. The newly emerging nanotechnology and multidisciplinary intersection provide new opportunities in sensitive materials and sensing technology.

The scope of this Special Issue encompasses but is not limited to:

  • The design and synthesis of sensitive materials with novel sensing properties;
  • The design, fabrication, and optimization of (bio)sensors with an outstanding sensing performance;
  • Novel (bio)sensing concepts, mechanisms, and detection methods;
  • Advances of instrumental analysis, lab-on-a-chip, nanopores, etc.

Dr. Minggang Zhao
Dr. Ye Ma
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sensitive materials
  • sensors
  • electrochemistry
  • optical sensing
  • semiconductors
  • noble metals
  • seawater detection
  • biological sensing
  • environmental sensing

Published Papers (3 papers)

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Research

15 pages, 5523 KiB  
Article
Study of Anticorrosion and Antifouling Properties of a Cu-Doped TiO2 Coating Fabricated via Micro-Arc Oxidation
by Pengfei Hu, Liyang Zhu, Chenghuan Tian, Gege Xu, Xinxin Zhang and Guangyi Cai
Materials 2024, 17(1), 217; https://doi.org/10.3390/ma17010217 - 30 Dec 2023
Viewed by 948
Abstract
As a promising material for petroleum industrial applications, titanium (Ti) and its alloys receive wide attention due to their outstanding physicochemical properties. However, the harsh industrial environment requires an antifouling surface with a desired corrosion resistance for Ti and its alloys. In order [...] Read more.
As a promising material for petroleum industrial applications, titanium (Ti) and its alloys receive wide attention due to their outstanding physicochemical properties. However, the harsh industrial environment requires an antifouling surface with a desired corrosion resistance for Ti and its alloys. In order to achieve the desired antifouling properties, micro-arc oxidation (MAO) was used to prepare a Cu-doped TiO2 coating. The microstructure of the Cu-doped TiO2 coating was investigated by TF-XRD, SEM, and other characterization techniques, and its antifouling and anticorrosion properties were also tested. The results show the effects of the incorporation of Cu (~1.73 wt.%) into TiO2 to form a Cu-doped TiO2, namely, a Ti–Cu coating. The porosity (~4.8%) and average pore size (~0.42 μm) of the Ti–Cu coating are smaller than the porosity (~5.6%) and average pore size (~0.66 μm) of Ti–blank coating. In addition, there is a significant reduction in the amount of SRB adhesion on the Ti–Cu coating compared to the Ti–blank coating under the same conditions, while there is little difference in corrosion resistance between the two coatings. There, the addition of copper helps to improve the fouling resistance of TiO2 coatings without compromising their corrosion resistance. Our work provides a practical method to improve the antifouling function of metallic Ti substrates, which could promote the application of Ti in the petroleum industry. Full article
(This article belongs to the Special Issue Sensitive Materials for Advanced Sensing Technology)
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12 pages, 4126 KiB  
Article
Using Multistage Energy Barrier of Heterojunctions in Improving Cr(VI) Detection
by Minggang Zhao, Yichang He, Xiaotong Dong, Kun Pang, Qian He, Ye Ma and Hongzhi Cui
Materials 2023, 16(22), 7154; https://doi.org/10.3390/ma16227154 - 14 Nov 2023
Viewed by 569
Abstract
Detecting heavy metals in seawater is challenging due to the high salinity and complex composition, which cause strong interference. To address this issue, we propose using a multistage energy barrier as an electrochemical driver to generate electrochemical responses that can resist interference. The [...] Read more.
Detecting heavy metals in seawater is challenging due to the high salinity and complex composition, which cause strong interference. To address this issue, we propose using a multistage energy barrier as an electrochemical driver to generate electrochemical responses that can resist interference. The Ni-based heterojunction foams with different types of barriers were fabricated to detect Cr(VI), and the effects of the energy barriers on the electrochemical response were studied. The single-stage barrier can effectively drive the electrochemical response, and the multistage barrier is even more powerful in improving sensing performance. A prototype Ni/NiO/CeO2/Au/PANI foam with multistage barriers achieved a high sensitivity and recovery rate (93.63–104.79%) in detecting seawater while resisting interference. The use of multistage barriers as a driver to resist electrochemical interference is a promising approach. Full article
(This article belongs to the Special Issue Sensitive Materials for Advanced Sensing Technology)
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17 pages, 5591 KiB  
Article
In Situ Electrochemical Monitoring of the Crevice Corrosion Process of the 7075-T651 Aluminium Alloy in Acidic NaCl and NaNO3 Solution
by Shengjie Wang, Yamin Cao, Xiaohang Liu and Guangyi Cai
Materials 2023, 16(7), 2812; https://doi.org/10.3390/ma16072812 - 31 Mar 2023
Cited by 1 | Viewed by 1184
Abstract
The crevice corrosion of the 7075-T651 aluminium alloy was investigated using in situ electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curves (PC), and H+ sensors in acidic NaCl solution with different contents of NaNO3. In the solution without NaNO3, [...] Read more.
The crevice corrosion of the 7075-T651 aluminium alloy was investigated using in situ electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curves (PC), and H+ sensors in acidic NaCl solution with different contents of NaNO3. In the solution without NaNO3, the pH in the crevice increased rapidly and gradually reached a relatively stable status. The corrosion of the aluminium alloy in the crevice was inhibited and crevice corrosion could not be initiated. In the solution with NaNO3, the pH increased rapidly at the initial immersion period and then decreased gradually. The corrosion of the aluminium alloy inside the crevice could be enhanced and the corrosion of the aluminium alloy outside crevice could be inhibited. This triggered crevice corrosion in the solution with NaNO3. The inhibited corrosion outside the crevice can be attributed to the improved passive film of the specimen outside the crevice by nitrate. The accumulated secondary products of ammonia inside the crevice led to selective dissolution of copper, which triggered the nucleation of pitting corrosion and promoted the corrosion of the specimen inside the crevice. Full article
(This article belongs to the Special Issue Sensitive Materials for Advanced Sensing Technology)
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