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Chemosensors
Special Issues
Nanomaterial-Based Chemosensors and Biosensors for Smart Sensing
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Nanomaterial-Based Chemosensors and Biosensors for Smart Sensing

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Materials for Chemical Sensing".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 6242

Special Issue Editors

Dr. Yunong Zhao

E-Mail Website
Guest Editor
Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, School of Integrated Circuits, Anhui University, Hefei 230601, China
Interests: nanocrystal; biosensing and chemical sensing; electrochemical sensor; transistor-based biosensor; semiconductor-based gas sensor; flexible electronics
Dr. Xiaohui Guo

E-Mail Website
Guest Editor
Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, School of Integrated Circuits, Anhui University, Hefei 230601, China
Interests: carbon nanomaterial; flexible electronic device; smart sensing; MEMS sensor; electronic skin
Dr. Siliang Wang

E-Mail Website
Guest Editor
National Engineering Research Center for Agro-Ecological Big Data Analysis & Application, School of Electronics and Information Engineering, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, Hefei 230601, China
Interests: novel electronic material; chemical sensor; electrochemical sensor; microsystem integration; micro-energy storage device; MEMS sensor

Special Issue Information

Dear Colleagues,

Chemosensors and biosensors have attracted widespread attention due to their great potential for detecting or monitoring biological and chemical information. Advances in chemosensor and biosensor technology have been driven by innovative progress in nanomaterials. The design, synthesis, and preparation of various nanomaterials have injected new impetus into the development and application of chemosensors and biosensors, providing a transducer device basis for the field of smart sensing.

The aim of this Special Issue is to provide selected contributions on recent advances in the field of nanomaterial-based sensor research and application in smart sensing. Authors are, therefore, invited to submit either review articles or original research articles related to novel nanomaterials, sensor design, sensitive mechanisms, and smart sensing applications.

Dr. Yunong Zhao
Dr. Xiaohui Guo
Dr. Siliang Wang
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. Chemosensors is an international peer-reviewed open access monthly 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 2700 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

  • advanced nanomaterial
  • low-dimensional nanomaterial
  • composite nanomaterial
  • nanomaterial-based sensor fabrication and characterization
  • electrochemical sensor
  • optical sensor
  • chemosensor
  • biosensor
  • electronic skin
  • transistor-based chemo- and bio- sensor
  • smart sensing

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

12 pages, 4372 KiB  
Communication
High-Performance Screen-Printed Triboelectric Nanogenerator Based on BaTiO3-Enhanced Copy Paper for Sustainable Energy Harvesting
by Omkar A. Patil, Jun Young Cheong, Baoyang Lu, Byungil Hwang and Sooman Lim
Chemosensors 2025, 13(2), 76; https://doi.org/10.3390/chemosensors13020076 - 19 Feb 2025
Viewed by 556
Abstract
This study investigates the triboelectric performance of nanogenerators based on copy paper (CP) and barium titanate (BTO) with varying concentrations (0%, 5%, 10%, 15%, and 20%). BTO was coated onto the paper surface via screen-printing, significantly enhancing the triboelectric properties. Results showed that [...] Read more.
This study investigates the triboelectric performance of nanogenerators based on copy paper (CP) and barium titanate (BTO) with varying concentrations (0%, 5%, 10%, 15%, and 20%). BTO was coated onto the paper surface via screen-printing, significantly enhancing the triboelectric properties. Results showed that as the BTO concentration increased, the output performance improved, with optimal performance observed at 15% BTO. At this concentration, the nanogenerator produced an output of 103 V and 3.6 µA. The CP/BTO nanogenerator demonstrated stable performance over 57,600 cycles at 4 Hz frequency and 40 N applied force, indicating excellent durability. The device attained a maximum power density of 32.4 µWcm2, highlighting the efficiency improvement through BTO integration. Various parameters including BTO concentration, applied force, and frequency were studied to optimize device performance. The CP/BTO device successfully powered 60 LEDs and a calculator, demonstrating its potential for practical energy harvesting applications. This research presents a promising approach for developing low-cost, environmentally friendly power-generating systems for wearable and portable devices. Full article
(This article belongs to the Special Issue Nanomaterial-Based Chemosensors and Biosensors for Smart Sensing)
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16 pages, 54323 KiB  
Article
Mo-Doped Co3O4 Nanostructures for Enhanced N-Butanol Sensing Performance
by Yanping Chen, Guangfeng Zhang, Jing Ren, Haoyang Xu and Yonghui Jia
Chemosensors 2025, 13(2), 61; https://doi.org/10.3390/chemosensors13020061 - 8 Feb 2025
Viewed by 537
Abstract
In this work, Mo-doped Co3O4 nanostructures were synthesized through a simple solvothermal method. To characterize the structures of the pure Co3O4 and Mo-doped Co3O4 samples, a variety of analytical techniques, such as XRD, SAED, [...] Read more.
In this work, Mo-doped Co3O4 nanostructures were synthesized through a simple solvothermal method. To characterize the structures of the pure Co3O4 and Mo-doped Co3O4 samples, a variety of analytical techniques, such as XRD, SAED, TEM, SEM and XPS, were utilized. The analysis of the gas sensing performance indicated that the 1 at% Mo-doped Co3O4 sensor exhibited optimal sensing performance for low concentrations of n-butanol, achieving a notable Rg/Ra ratio of 9.53 at 10 ppm at a lower operating temperature of 150 °C. This performance was approximately four times that of pure Co3O4, with a response time of 81 s and a recovery time of 66 s. Additionally, the sensor also exhibited outstanding gas selectivity and repeatability. The incorporation of Mo significantly improved the catalytic activity and sensitivity of Co3O4, primarily due to the increased formation of oxygen vacancies and the modification of the electronic structure. These changes facilitated more efficient gas adsorption and faster response times. Therefore, the Mo-doped Co3O4 sensor exhibits considerable potential for detecting n-butanol gas. Full article
(This article belongs to the Special Issue Nanomaterial-Based Chemosensors and Biosensors for Smart Sensing)
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12 pages, 4711 KiB  
Article
CoNiTe2 Nanomaterials as an Efficient Non-Enzymatic Electrochemical Sensing Platform for Detecting Dopamine
by Zhi-Yuan Wang, Chi-Hung Shen, Shih-Hao Yang, Han-Wei Chang and Yu-Chen Tsai
Chemosensors 2024, 12(6), 110; https://doi.org/10.3390/chemosensors12060110 - 13 Jun 2024
Viewed by 1461
Abstract
Dopamine (DA) is an important catecholamine neurotransmitter in the mammalian central nervous system that affects many physiological functions. Hence, a highly sensitive and selective sensing platform is necessary for quantification of DA in the human body. In this study, ternary transition metal tellurides [...] Read more.
Dopamine (DA) is an important catecholamine neurotransmitter in the mammalian central nervous system that affects many physiological functions. Hence, a highly sensitive and selective sensing platform is necessary for quantification of DA in the human body. In this study, ternary transition metal tellurides of CoNiTe2 were successfully synthesized using the hydrothermal method. The proposed CoNiTe2 nanomaterials were dispersed well in Nafion to form a well-dispersed suspension and, when dropped on a glassy carbon electrode (GCE) as the working electrode (CoNiTe2/Nafion/GCE) for electrochemical non-enzymatic DA sensing, displayed excellent electrocatalytic activity for dopamine electrooxidation. The morphology and physical/chemical properties of CoNiTe2 nanomaterials were characterized using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). In order to obtain the best electrochemical response to DA from the fabricated CoNiTe2/Nafion/GCE, the experimental conditions of electrochemical sensing, including the CoNiTe2 loading amounts and pH values of the phosphate buffer solution (PBS), were explored to achieve the best electrochemical sensing performance. Under optimal conditions (2 mg of CoNiTe2 and pH 6.0 of PBS), the fabricated CoNiTe2/Nafion/GCE showed excellent electrocatalytic activity of DA electrooxidation. The CoNiTe2/Nafion/GCE sensing platform demonstrated excellent electrochemical performance owing to the optimal structural and electronic characteristics originating from the synergistic interactions of bimetallic Co and Ni, the low electronegativity of Te atoms, and the unique morphology of the CoNiTe2 nanorod. It exhibited a wide linear range from 0.05 to 100 μM, a high sensitivity of 1.2880 µA µM−1 cm−2, and a low limit of detection of 0.0380 µM, as well as acceptable selectivity for DA sensing. Therefore, the proposed CoNiTe2/Nafion/GCE could be considered a promising electrode material for electrochemical non-enzymatic DA sensing. Full article
(This article belongs to the Special Issue Nanomaterial-Based Chemosensors and Biosensors for Smart Sensing)
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12 pages, 4023 KiB  
Article
Highly Sensitive and Selective MEMS Gas Sensor Based on WO3/Al2O3/Graphite for 2-Chloroethyl Ethyl Sulfide (2-CEES) Detection
by Liangpan Yang, Wangze Cheng, Wenlong Yan, Li Wen, Changyue Xia, Chuang Sun, Doumeng Hu, Yunong Zhao, Xiaohui Guo, Wei Zeng and Siliang Wang
Chemosensors 2024, 12(1), 5; https://doi.org/10.3390/chemosensors12010005 - 30 Dec 2023
Cited by 5 | Viewed by 2635
Abstract
The detection and monitoring of toxic and harmful gases play a vital role in environmental protection, human health, and industrial and agricultural production. However, it is still challenging to develop gas sensors for the detection of toxic and harmful gases with high sensitivity, [...] Read more.
The detection and monitoring of toxic and harmful gases play a vital role in environmental protection, human health, and industrial and agricultural production. However, it is still challenging to develop gas sensors for the detection of toxic and harmful gases with high sensitivity, good recovery and excellent selectivity. In this study, WO3/Al2O3/graphite composite materials were used for an MEMS 2-CEES gas sensor (dichlorodiethyl sulfide simulation), and the corresponding sensing properties were explored. The experimental results show that when the working temperature is 340 °C, the response of the sensor to 2-CEES gas with a concentration of 5.70 ppm is 69%, the response time is 5 s and the recovery time is 42 s. The sensor also has the advantages of long-term stability and high selectivity. Furthermore, the MEMS gas sensor array based on WO3/Al2O3/graphite composite materials has been achieved and also exhibits excellent sensing performance. Overall, this study provides a strategy for realizing high-performance dichlorodiethyl sulfide gas sensors. Full article
(This article belongs to the Special Issue Nanomaterial-Based Chemosensors and Biosensors for Smart Sensing)
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