Article
Materials Science, Ceramics
Yu An, Tian-yang Wang, Tian -tian Li, Hua Yang, Hui Yu, Long Xia, Xiao-xiao Huang
Summary: In recent years, environmental pollution and industrial accidents caused by the leakage of harmful gas are increasing, and advanced gas sensors have been considered as one of the main strategies for environmental monitoring and industrial safety control. In this study, a Cr2O3@SnO2 composite was synthesized as an effective gas sensor for NOx gas, showing high response and low detection levels.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Yan-Xue Zhen, Bao-Yu Song, Wei-Xin Liu, Jin-Xin Ye, Xian-Fa Zhang, Zhao-Peng Deng, Li-Hua Huo, Shan Gao
Summary: SnO2 sensing material with hierarchical microtube structure and mesoporous characteristics synthesized using poplar branch as bio-template showed high response and rapid recovery time, as well as low detection limit, good selectivity, humidity resistance, and long-term stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Xuan-Yu Yang, Ya-Tong Shi, Ke-Feng Xie, Jia-Yi Wang, Yi-Fei Wang, Yu Zheng, Shao-Ming Fang, Yong-Hui Zhang
Summary: In this study, in-plane SnO2-Sn3O4 heterojunctions with hierarchical nanoflower morphology were designed for efficient detection of formaldehyde at low working temperature. The lattice strains and Schottky junction dual regulation ensure excellent performance of the heterojunctions, showing high sensitivity, repeatability, and selectivity to formaldehyde.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Huiqing Fan, Xiaokun Zheng, Qi Shen, Weijia Wang, Wenqiang Dong
Summary: A hierarchical SnO2 nanosheet structure loaded with Pt nano quantum dots was prepared and exhibited high gas sensitivity and excellent response and recovery behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Zhenyu Feng, Shuo Wang, Guangchao Yin, Ramachandran Rajan, Fuchao Jia
Summary: In this study, SnO2 nanoflowers sensitized by boron nitride quantum dots were prepared for BTEX gas detection, showing significant improvement in gas sensing performance and fast response and recovery time.
Article
Chemistry, Analytical
Jinzhou Bai, Yanbai Shen, Sikai Zhao, Yunshuang Chen, Guodong Li, Cong Han, Dezhou Wei, Zhenyu Yuan, Fanli Meng
Summary: Flower-like MoS2 hierarchical architectures decorated with SnO2 quantum dots were prepared and used for room-temperature NH3 sensing detection. The gas sensor exhibited high response, short response/recovery times, good selectivity, and excellent stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
Shi-Chao Wang, Xiao-Hu Wang, Gao-Qun Qiao, Xiao-Yan Chen, Xin-Zhen Wang, Nan-Nan Wu, Jian Tian, Hong-Zhi Cui
Summary: A three-dimensional hierarchical ZnO structure modified with ultrafine NiO particles was synthesized successfully, exhibiting excellent isopropanol sensing properties. The Ni:Zn atomic ratio of 7.42:100 was found to be optimal for enhancing gas sensing performance. The composite showed high selectivity and sensitivity, fast response rate, low operating temperature, and a wide sensing range to isopropanol.
Article
Engineering, Electrical & Electronic
Joyce Joseph, N. Pradeep, V. S. Vadgama, P. S. Solanki, N. A. Shah, D. D. Pandya
Summary: This study investigated the humidity sensing properties of Fe doped SnO2 nanocoral (FSNC)-like structures achieved by hydrothermal synthesis. Different shapes of FSNC samples showed similar crystallite sizes and were tested for humidity sensing properties in a range of 20-80% relative humidity. Among the various shapes of FSNC, samples with rod-shaped tentacles exhibited the highest sensitivity.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Ceramics
Miao Liu, Peng Song, Zhongxi Yang, Qi Wang
Summary: In this study, a novel SnO2 nanorod/spindle-like Fe2O3 heterostructure was successfully fabricated through a simple two-step hydrothermal route, which showed improved gas sensing performance on volatile organic compounds compared to pure Fe2O3. The enhanced gas-sensitivity performance of the hierarchical SnO2/Fe2O3 heterostructures can be attributed to the synergistic effect and heterojunction of the interface between spindle-like Fe2O3 and SnO2 nanorod. This research may provide new insight and a rational strategy for upgrading the sensing performance of certain semiconductor metal oxide materials through the design of novel layered nanostructures in the future.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Lifang He, Jingjie Hu, Qiming Yuan, Zhangcheng Xia, Ling Jin, Hongliang Gao, Liyuan Fan, Xiangfeng Chu, Fanli Meng
Summary: Constructing porous and heterojunction structures within the semiconductor oxide composites is an ideal strategy for developing gas sensing materials, but it is difficult due to grain boundaries. In this study, ZnFe2O4/SnO2 (ZFO/SNO) composite with porous core-shell spheres structure was successfully synthesized by combining pre-synthesized SnO2 nanospheres with ZnFe2O4. The porous ZFO/SNO composite with a Zn to Sn ratio of 1:0.7 showed excellent acetone sensing performance, attributed to its rich heterojunctions, porous structure, and small nanoparticle size.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Bao-Yu Song, Cheng Li, Ming-Song Lv, Xian-Fa Zhang, Zhao-Peng Deng, Ying-Ming Xu, Li-Hua Huo, Shan Gao
Summary: Constructing low-temperature nitric oxide sensors with fast detecting speed and high sensing response remains challenging. In this study, SnO2 sensing materials inherited from biotemplates were controllably prepared by immersing waste willow catkins in SnCl4 solution and calcining the precursors. The obtained SnO2-6 sensor showed ultra-high sensitivity and rapid monitoring ability towards NO at low temperature, with shortened response/recovery times and satisfactory selectivity, stability, and moisture resistance.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Xiaoning Meng, Mingshu Bi, Qiuping Xiao, Wei Gao
Summary: This study evaluates the performance of different hydrogen sensing materials and finds that Pd-modified SnO2 nanoparticles exhibit enhanced H-2 sensing capabilities at lower working temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Wei Jin, Huan Wang, Yueli Liu, Shuang Yang, Jing Zhou, Wen Chen
Summary: This study developed SnO2 quantum dots-functionalized MoO3 nanobelts for highly selective and sensitive ethylene detection. The prepared 2.5%-SnO2 QDs/MoO3 NBs exhibited excellent response, low detection limit, and selectivity at a low operating temperature.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Sikai Zhao, Yanbai Shen, Roya Maboudian, Carlo Carraro, Cong Han, Wengang Liu, Dezhou Wei
Summary: ZnO-SnO2 hetero-structured nanowires were fabricated by growing SnO2 nanoparticles on ZnO nanowires, showing improved NO2 sensing properties with the highest response at a Sn/Zn atomic ratio of 5% and operating temperature of 150 degrees C. These hetero-structured nanowires also exhibited faster response/recovery rate and better NO2 selectivity compared to pristine ZnO nanowires, with the performance difference explained by surface depletion and potential barrier control models.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Haijie Cai, Xiaopeng Qiao, Meilian Chen, Dongsheng Feng, Abdulaziz A. Alghamdi, Fahad A. Alharthi, Yingjie Pan, Yong Zhao, Yongheng Zhu, Yonghui Deng
Summary: Hierarchical assembled SnO2 nanosphere, SnO2 hollow nanosphere, and SnO2 nanoflower were synthesized as sensing materials for efficient detection of acephate pesticide residues. The SnO2 hollow nanosphere-based sensor exhibited the best sensitivity, selectivity, and rapid response towards acephate, making it a useful tool for monitoring acephate pesticide residues in food and the environment. The unique performance of the sensor can be attributed to its mesoporous hollow nanosphere structure and appropriate band gap.
CHINESE CHEMICAL LETTERS
(2021)
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)