Article
Chemistry, Physical
Huimin Yu, Longhui Dai, Yangquan Liu, Yue Zhou, Ping Fan, Jingting Luo, Aihua Zhong
Summary: Superior NH3 sensors with high response and stability were successfully obtained by wrapping SnO2 nanoparticles on Ti3C2Tx MXene nanosheets via a facile hydrothermal method. The Ti3C2Tx MXene-SnO2 composite exhibited excellent NH3 gas detection at room temperature with a response as high as 75% for 500 ppm NH3 gas. The composite also showed fast response and recovery times of 109 and 342 s, respectively. Moreover, the Ti3C2Tx MXene-SnO2 composite demonstrated high selectivity and stability for NH3 gas sensing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Lili Li, Chenguang Wang, Zhihua Ying, Wei Wu, Yongqian Hu, Weihuang Yang, Weipeng Xuan, Yang Li, Fei Wen
Summary: This paper reported a low concentration CO gas sensor based on SnO2 modified graphene nanocomposite at 25 degrees C. The SnO2/graphene nanocomposite exhibited higher CO gas sensing performance than pure SnO2, showing a high response to CO at 25 degrees C, shorter response and recovery times, excellent repeatability and stability. The excellent CO sensing performance of the composite is attributed to graphene's ability to provide a large surface area for adsorption sites and prevent the disagglomeration of SnO2 nanoparticles.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Haineng Bai, Hui Guo, Cheng Feng, Jin Wang, Bin Liu, Zili Xie, Fuqiang Guo, Dunjun Chen, Rong Zhang, Youdou Zheng
Summary: A high-performance and cost-effective NO2 gas sensor operating at room temperature was achieved by depositing Pd nanoparticles and rGO nanosheets onto synthesized SnO2 nanospheres. The sensor exhibited unique porous structure, high selectivity, and fast response, with a theoretical detection limit of 37.8 ppb.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Vo Thanh Duoc, Chu Manh Hung, Hugo Nguyen, Nguyen Van Duy, Nguyen Van Hieu, Nguyen Duc Hoa
Summary: The grafted structures between SnO2 and ZnO nanowires were achieved through a two-step growth process, showing promising sensitivity for NO2 gas sensing.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Weimeng Zheng, Zhongyue Zhang, Nannan Liu, Qingyu Li, Jianbo Sun
Summary: Heterolayered SnO2/SnSe nanosheet composites were synthesized and used as a highly sensitive sensor for NO2 detection at room temperature. The sensor exhibited high sensitivity and selectivity, as well as a low detection limit. The improved sensing performance was attributed to the presence of abundant heterojunctions and enhanced interface charge transfer in the material.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zongming Deng, Yumin Zhang, Zhenlin Song, Dong Xu, Baoye Zi, Pengsheng Zhu, Qiang Lu, Jin Zhang, Jianhong Zhao, Qingju Liu
Summary: A low-cost, low-temperature, and ultra-sensitive TEA sensor based on Pd-SnO2/In2O3 composites was developed in this study. The sensor exhibited high sensitivity to TEA gas near room temperature, along with good selectivity, stability, and moisture resistance. Even in low-temperature and high-humidity environments, the sensor maintained high sensitivity, indicating great potential for TEA detection.
Article
Chemistry, Analytical
Weiwei Guo, Lingli Huang, Jie Zhang, Youzhou He, Wen Zeng
Summary: The study utilized calcining and hydrothermal method to grow highly ordered Ni-doped SnO2 nanosheets onto g-C3N4 lamina, resulting in a Ni-SnO2/g-C3N4 composite with high sensitivity and good stability for detecting acetone, showing potential for diabetes diagnosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Chandrabhan Patel, Sumit Chaudhary, Vikash Kumar Verma, Mayank Dubey, Sharath Sriram, Shaibal Mukherjee
Summary: In this study, pristine WO3 and Pd-loaded WO3 were synthesized using a simple hydrothermal method and integrated with an IoT-enabled portable resistance readout circuit for real-time sensing of H2S. Various characterizations were performed to investigate the crystal structure, surface morphology, active surface area, and elemental composition of the synthesized materials. The sensor showed improved sensing response towards H2S with the loading of 0.25 and 0.5 mol% Pd, but a reduction in response was observed with further loading of 1 mol% Pd.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Maamon A. Farea, Gita B. Bhanuse, Hamed Y. Mohammed, Mohammed O. Farea, Mohyeddine Sallam, Sumedh M. Shirsat, Meng-Lin Tsai, Mahendra D. Shirsat
Summary: An ultra-high sensitive and selective carbon monoxide (CO) gas sensor was developed using PPy/TiO2 nanocomposite. Compared to the pure PPy sensor, the PPy/TiO2 sensor exhibited a 4-fold enhanced sensitivity with high selectivity. The inclusion of TiO2 in PPy plays a crucial role in improving the performance of the gas sensor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Myung Sik Choi, Han Gil Na, Jae Hoon Bang, Ali Mirzaei, Seungmin Han, Ha Young Lee, Sang Sub Kim, Hyoun Woo Kim, Changhyun Jin
Summary: Gas sensors were fabricated by decorating amorphous carbon layers on SnO2 nanowires, without the need for pretreatment or functionalization, and operated at room temperature. The amorphous carbon increased surface area and improved NO(2) gas sensing by providing electronic effects to the SnO2.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Meihua Li, Xiaodong Gao, Yunfan Zhang, Yuxin Zheng, Zhonghai Lin, Guangfen Wei
Summary: This article investigates the application of SnS2/SnO2 nanocomposites for ammonia detection. The results show that the nanocomposites exhibit high sensitivity and stability to ammonia at low temperatures, making them a potential candidate for ammonia gas sensing.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Physical
Yang Gao, Qiao Lu, Peijian Yan, Pengfei Tian, Minghui Zhu, Biao Xiao, Fuzhen Xuan
Summary: In this study, the effect of surface structure on the adsorption and activation of H-2 on Pd surfaces was investigated using density functional theory. It was found that Pd(1 1 1) is the most favorable for hydrogen sensing. The experimental results also confirmed the superior performance of Pd nano-octahedrons enclosed by Pd(1 1 1) facets for H-2 sensing.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Bo Zhang, Shuai Zhang, Yi Xia, Pingping Yu, Yin Xu, Yue Dong, Qufu Wei, Jing Wang
Summary: Optical excitation is an effective method for balancing sensor responses and response/recovery properties at room temperature. In this study, Au/SnO2 nanowires were synthesized and compared with pure SnO2 in terms of sensing properties, highlighting the crucial role of localized surface plasmon resonance.
Article
Chemistry, Analytical
Kun Hu, Yuanfan Li, Chuanxin Ge, Ling Bai, Guiwu Liu, Guanjun Qiao, Sung Gu Kang, Eui Jung Kim, Mingsong Wang
Summary: In this work, a three-dimensional ordered macroporous Au-loaded SnO2 sensor was developed, demonstrating ultrahigh room-temperature ppb-level NO2 sensitivity under intermittent UV light irradiation. The Au/SnO2 inverse opal structure was fabricated using a polystyrene opal crystal template, with finely dispersed Au nanoparticles anchored on the interconnected walls of SnO2. The decoration of Au nanoparticles improved the NO2 response of SnO2, especially under intermittent UV irradiation. The sensing mechanism responsible for the enhanced response toward NO2 was explained.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Nanoscience & Nanotechnology
Mohit Verma, Gaurav Bahuguna, Arpit Saharan, Snehraj Gaur, Hossam Haick, Ritu Gupta
Summary: This study demonstrates the synthesis of metallic tin-doped Sn-SnO2 nanocomposite with high affinity towards xylene. The sensor shows a linear response to xylene in the 1-100 ppm range with a high sensitivity of 255% at 60 ppm. It is hardly affected by humidity variations and provides an effective solution for sensing indoor pollutants under humid conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
R. Molavi, M. H. Sheikhi
Article
Chemistry, Physical
Shahram Bahadori-Haghighi, Rahim Ghayour, Mohammad Hossein Sheikhi
Article
Physics, Applied
Shahram Bahadori-Haghighi, Rahim Ghayour, Mohammad Hossein Sheikhi
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Materials Science, Multidisciplinary
S. Hosseinzadeh, M. Behboudnia, L. Jamilpanah, M. H. Sheikhi, E. Mohajerani, K. Tian, A. Tiwari, P. Elahi, S. M. Mohseni
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Chemistry, Physical
S. Absalan, Sh Nasresfahani, M. H. Sheikhi
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
S. Javanmardi, Sh Nasresfahani, M. H. Sheikhi
MATERIALS RESEARCH BULLETIN
(2019)
Article
Materials Science, Multidisciplinary
Sh Nasresfahani, Z. Zargarpour, M. H. Sheikhi, S. F. Nami Ana
Article
Chemistry, Physical
M. Mozafari, Sh Nasresfahani, M. H. Sheikhi, H. Agharezaei
Summary: Embedding plasmonic metal nanostructures into semiconductor materials can enhance the performance of photodetectors, as demonstrated by the development of a high-performance broadband photodetector based on the new core-shell nanostructure Ag@PbS. This nanostructure showed excellent photodetecting performance, fast response time, and operational reliability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Mohsen Taheripour, Navid Yasrebi, Shirin Nasresfahani, Mohammad Hossein Sheikhi
Summary: The study proposed a fabrication process for sensors based on BaTiO3/ZnO heterostructures, with sensors fabricated using different molar ratios of BaTiO3 to ZnO showing significant gas responses to volatile organic compounds. The fabrication process and heterostructure design improved the sensing performance of the sensor.
IEEE SENSORS JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
S. F. Nami-Ana, Sh Nasresfahani, J. Tashkhourian, M. Shamsipur, Z. Zargarpour, M. H. Sheikhi
Summary: This study investigates the CO sensing property of Cu(II)-L-aspartic acid nanofibers/PANI nanofibers composite at room temperature. The nanofiber composite exhibits a branched structure, with the Cu(II)-L-aspartic acid nanofibers forming the trunk and the polyaniline nanofibers as branches. The sensor shows enhanced response value towards CO gas, good selectivity, and acceptable response and recovery characteristics, with a detection limit of 120 ppm.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Sh. Nasresfahani, S. Soltani, H. Ashrafi, M. H. Sheikhi
Summary: In this work, Pd@TiO2/C3N4 ternary heterostructure sensing materials were successfully synthesized and their gas sensing properties were studied. The fabricated 5% Pd@TiO2/C3N4 sensor showed high ethanol response value, short response time, fast recovery property, high selectivity, and excellent stability. The enhanced sensing performance of the ternary Pd@TiO2/C3N4 heterostructure is attributed to the chemical and electronic sensitization of Pd nanoparticles, the formation of n-n heterojunction, and the 2D layered structure of C3N4 facilitating charge transfer.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Sh Nasresfahani, R. Safaiee, M. H. Sheikhi
Summary: This paper utilizes density functional theory to simulate the structural, electronic, and methane adsorption properties of palladium-decorated reduced graphene oxide. The results indicate that Pd-decorated rGO could be a promising candidate for CH4 gas sensor applications.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Engineering, Electrical & Electronic
Sh Nasresfahani, S. Javanmardi, M. H. Sheikhi, M. Khalilakbar
Summary: In the present study, CuO/g-C3N4 heterojunctions with different g-C3N4 loading amounts were synthesized for gas sensing towards CO. The sensor with an appropriate ratio of g-C3N4 exhibited high response, rapid response/recovery process, and good repeatability. The results provide insight into the design of novel metal oxide semiconductor/g-C3N4 heterojunctions with intriguing characteristics for sensing applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Physical
H. Aminzadeh, Sh Nasresfahani
Summary: This study provides a detailed theoretical investigation on the structural, electronic, and magnetic properties of graphene with adsorbed methyl or halomethyl radicals. The results show that the adsorption of these radicals on graphene can modulate the electronic and magnetization characteristics of graphene.
APPLIED SURFACE SCIENCE
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
S. Soltani, H. Ashrafi, Sh. Nasresfahani, M. H. Sheikhi
2020 28TH IRANIAN CONFERENCE ON ELECTRICAL ENGINEERING (ICEE)
(2020)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
