Article
Chemistry, Physical
Li-Wen Mao, Li-Yuan Zhu, Tao Tao Wu, Lei Xu, Xuan-Hong Jin, Hong-Liang Lu
Summary: This study synthesized heterostructured Nb2O5/SnO2 core-shell nanorods using a hydrothermal strategy and atomic layer deposition. The gas sensors based on these nanorods demonstrated improved sensing performance, stable operation, and low power consumption, making them promising for practical applications in oil and gas drilling platforms and other industrial fields.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Baohui Zhang, Chong Li, Min Li, Chen Fu, Ran Tao, Honglang Li, Jingting Luo
Summary: In this study, a SnO2 quantum wires and Ti3C2Tx MXene heterojunction composite was synthesized for low-concentration NO2 detection. The composite exhibited high speed, low detection limit, and good selectivity and stability at a lower operating temperature, enabling fast response, high sensitivity, and selective NO2 sensing.
Article
Chemistry, Physical
Chong Wang, Yiqun Zhang, Lianjing Zhao, Chenguang Wang, Fangmeng Liu, Xiaoying Sun, Xiaolong Hu, Geyu Lu
Summary: In this study, quaternary oxide semiconductor was used as sensing material for gas sensors, and synthesized through one-step solvothermal method. Various characterization methods were employed to analyze its composition and structure. A composite of CuInW2O8 and CuWO4 with spindle-like nanostructure was successfully prepared. The sensor exhibited good response to acetone at 210 degrees C and strong anti-humidity ability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
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
Chemistry, Analytical
Yoshitake Masuda
Summary: This review focuses on tin oxide nanomaterials, which are actively researched as semiconductor-type gas sensors. The development and applications of novel tin oxide nanomaterials in the past decade are discussed, with a focus on how dimensions and morphology affect sensing performance. The dendritic structure formed by 2D nanosheets connected by crystal growth points towards future sensor development, while the high gas adsorption performance and reactivity of metastable crystal planes provide guidance for future sensor development.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Environmental
Chunyan Li, Pil Gyu Choi, Yoshitake Masuda
Summary: Gas sensors with high sensitivity and selectivity are crucial for practical applications, such as distinguishing target molecules in volatile organic compound detection, real-time security alerts, and clinical diagnostics. In this study, a large-lateral-area SnO2 nanosheet sensor was successfully synthesized via a one-step aqueous solution process. The SnO2 sensor exhibited remarkable sensitivity and anti-interference ability towards acetone, with excellent reproducibility and long-term stability. The ultrasensitive response of the SnO2 nanosheets can be attributed to their specific loose structure, small grain size, and metastable crystal facets.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Yang Liu, Hanyang Ji, Zhenyu Yuan, Fanli Meng
Summary: In this study, Co3O4/SnO2 composite material was successfully prepared and demonstrated outstanding sensitivity to butanone. By adjusting the content of Co3O4, the oxygen vacancy on the surface can be enhanced to improve gas sensitivity. The material shows high response and low detection limit, making it a promising candidate for gas sensing applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
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
Chemistry, Multidisciplinary
Yijun Yang, Bohee Maeng, Dong Geon Jung, Junyeop Lee, Yeongsam Kim, JinBeom Kwon, Hee Kyung An, Daewoong Jung
Summary: The study focuses on the performance of SnO2 thin film sensors for H-2 gas, revealing that annealed films exhibit higher response and shorter response time.
Article
Chemistry, Analytical
Weiyi Bu, Yan Zhang, Qixuan Qin, Yuliang Li, Xiaohong Chuai, Zhijie Zhou, Changhua Hu, Tianshuang Wang, Peng Sun, Fangmeng Liu, Geyu Lu
Summary: In this study, a NO2 gas sensor with high performance was fabricated using Au-loaded SnO2 nanosheet aggregates. Au nanoparticles were loaded onto SnO2 via the UV light-assisted reduction method, improving the sensing properties. The 0.5% Au/SnO2 based sensor exhibited high response to ppb-level NO2 (35-100 ppb) at low temperature (90 degrees C). It also showed excellent selectivity and long-term stability, detecting 2 ppb NO2 with a response value of 1.2. The enhanced sensing properties were attributed to the interface interaction between Au and SnO2, which enhanced the absorption capability for oxygen and NO2 molecules. Additionally, trace amount of loading Au maintained small size of Au nanoparticles, making the active sites on SnO2 more effective. This work provides a convenient method for preparing a ppb-level NO2 gas sensor with high performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Myung Sik Choi, Ali Mirzaei, Han Gil Na, Sangwoo Kim, Dong Eung Kim, Kyu Hyoung Lee, Changhyun Jin, Sun-Woo Choi
Summary: This study proposed a method to enhance the gas sensing properties of metal oxide nanowires by preparing Pd metal catalyst surrounded by SnO2-x with structural defects on the surface of SnO2 nanowires. Gas sensing studies demonstrated the promising effects of this approach, showing the usefulness of significantly enhancing the gas sensing properties.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Chunyan Li, Kyusung Kim, Teruaki Fuchigami, Toru Asaka, Ken-ichi Kakimoto, Yoshitake Masuda
Summary: In this study, a hybrid sensor material with loose structure was developed by loading Nb2O5 nanoparticles onto SnO2 nanosheets for the detection of low-concentration acetone gas. The spiky Nb2O5 exhibited higher response than the Nb2O5 nanorods. Gas sensors based on the hybrid structure showed remarkable enhancement in acetone sensing performance, with high response, low detection limit, and good selectivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Ceramics
Hyeon-Kyung Chang, Dong-Su Ko, Deok-Hyun Cho, Sungjin Kim, Ho-Nyun Lee, Hyo Sug Lee, Hyun-Jong Kim, Tae Joo Park, Young Min Park
Summary: The nanoporous SnO2@TiO2 heterostructure was synthesized through a modified thermal evaporation and atomic layer deposition process, enabling high sensitivity detection of formaldehyde. This structure exhibited a low detection limit, good linearity range, and high response, paving the way for exploring various applications such as biosensors, photocatalysts, and optoelectronic devices.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Bao-Yu Song, Cheng Li, Ming-Song Lv, Xian-Fa Zhang, Guo-Li Chen, Zhao-Peng Deng, Ying-Ming Xu, Li-Hua Huo, Shan Gao
Summary: The development of low-temperature metal oxide-based sensors with high sensitivity towards harmful ppb-level gases remains challenging. In this study, the researchers successfully fabricated a wood-inspired metal oxide sensor with excellent gas-sensing performance. The sensor, based on graphitic carbon-doped SnO2 material (GC/SnO2-6), exhibited high response and short recovery time towards NO gas. The sensor's outstanding performance can be attributed to its biomorphic structure, which has homogeneous mesopores, large specific surface area, and the synergism of graphitic carbon doping and abundant oxygen vacancies. This study also explored the enhanced sensing mechanism in detail.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Jie Wan, Chengao Liu, Xiaoxia Wang, Huajing Wang, Lu Tang, Zhenming Du, Wulin Song, Dawen Zeng
Summary: In this study, a MOS sensor based on Co/Pd-doped SnO2 nanomaterial was successfully used for the detection of dimethyl carbonate (DMC) gas in lithium-ion batteries (LIB), enabling early detection and real-time monitoring.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Noelia Barrabes, Jon Ostolaza, Sarah Reindl, Martin Maehr, Florian Schrenk, Hedda Drexler, Christoph Rameshan, Wojciech Olszewski, Guenther Rupprechter
Summary: Co-doped Au-25 nanoclusters with different numbers of doping atoms were synthesized and supported on CeO2 for catalytic CO oxidation. The catalytic activity was enhanced compared to pure Au-25 nanoclusters, with different performance depending on the number of Co atoms. XAFS, DRIFTS, and XPS studies revealed the evolution of doped Au clusters into CoAu nanoalloys with well-distributed Co atoms. Understanding the dynamics of doped nanoclusters on supports is crucial for the future development and application of bimetallic nanocluster catalysts.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Physical
Vera Truttmann, Florian Schrenk, Carlo Marini, Mireia Palma, Maricruz Sanchez-Sanchez, Christoph Rameshan, Giovanni Agostini, Noelia Barrabes
Summary: The reactivity of supported monolayer protected Au nanoclusters is influenced by their structural dynamics. The effect of different ligands on the core structure evolution of Au clusters supported on CeO2 was investigated under oxidative pretreatment and CO oxidation reaction. X-ray absorption and X-ray photoelectron spectroscopy studies showed that the clusters evolve to a similar core structure above 250 degrees C, indicating the active role of ligand-support interaction in the reaction.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Kirill Kamnev, Zdenek Pytlicek, Maria Bendova, Jan Prasek, Francesc Gispert-Guirado, Eduard Llobet, Alexander Mozalev
Summary: The demand for integrated passive devices (IPDs) arises from the increasing consumer demand for miniaturization of electronic products. Metal-insulator-metal (MIM) capacitors are essential components of IPD systems. Developing new materials and technologies is crucial for enhancing capacitor characteristics and co-integration with other electronic passives.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Liliana Margarita Garciia Rojas, Carlos Alberto Huerta-Aguilar, Eric Navarrete, Eduard Llobet, Pandiyan Thangarasu
Summary: This study investigates the doping of cations on ZrO2 for the adsorption of CO2. The deposition of metal ions on ZrO2 leads to the transformation of crystalline phases and thermal stability of the samples. The experimental results show that CoZrO2 exhibits the highest CO2 capture capacity of approximately 75%.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Khaoula Kacem, Juan Casanova-Chafer, Sami Ameur, Mohamed Faouzi Nsib, Eduard Llobet
Summary: This paper presents a simple and low-cost method for fabricating gas sensing devices using graphene oxide (GO) decorated with strontium titanate perovskite (SrTiO3). The active layers developed were capable of detecting hazardous gases such as NO2, CO2, and NH3 with high sensitivity and selectivity. The physical and chemical properties of the materials were analyzed using various experimental techniques, and a gas sensing mechanism was proposed and discussed. These findings demonstrate that functionalizing GO with SrTiO3 can enhance the adsorption capability and sensitivity of GO-based gas sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Tomoya Minezaki, Peter Kruger, Fatima Ezahra Annanouch, Juan Casanova-Chafer, Aanchal Alagh, Ignacio J. J. Villar-Garcia, Virginia Perez-Dieste, Eduard Llobet, Carla Bittencourt
Summary: This study investigates the hydrogen sensing mechanism of a nanostructured WS2 layer using NAP-XPS and DFT. The results suggest that hydrogen physisorbs on the WS2 active surface at room temperature and chemisorbs on tungsten atoms at higher temperatures. DFT calculations show that hydrogen adsorbs physically on the defect-free WS2 monolayer, but forms chemical bonds with tungsten atoms on sulfur defects. The hydrogen adsorption causes charge transfer and reduces the intensity of in-gap states, leading to an increase in the gas sensor resistance.
Article
Chemistry, Analytical
Omar Zaim, Benachir Bouchikhi, Soukaina Motia, Sonia Abello, Eduard Llobet, Nezha El Bari
Summary: Studies suggest that breath and urine analysis can be viable non-invasive methods for diabetes management and diagnosis. This study used two sensing strategies, analyzing VOCs in biological matrices and using data fusion to discriminate between types of diabetes. The results showed that an electronic nose and voltametric electronic tongue had high success rates for discriminating between breath and urine samples of diabetes patients and healthy controls. However, data fusion was necessary to improve the discrimination between type 1 and type 2 diabetes samples, resulting in an enhanced success rate of classification.
Article
Chemistry, Analytical
Selene Acosta, Juan Casanova-Chafer, Eduard Llobet, Axel Hemberg, Mildred Quintana, Carla Bittencourt
Summary: The properties of carbon nanotubes can be modified by adding metal nanoparticles to their surface. This is achieved by first functionalizing the CNTs with oxygen groups using plasma, followed by decorating them with Ni-Pd bimetallic nanoparticles using plasma sputtering deposition. The oxygen groups act as nucleation sites for the growth of the bimetallic nanoparticles. The resulting Ni-Pd nanoparticle-decorated CNTs are then evaluated for their sensing capabilities in detecting toluene.
Article
Environmental Sciences
Mahreen Khan, Muhammad Ikram, Ali Haider, Anwar Ul-Hamid, Hameed Ullah, Iram Shahzadi, Sherdil Khan, Mohammed Benali Kanoun, Souraya Goumri-Said, Francisco Medina, Walid Nabgan
Summary: This research explores the use of graphene oxide (GO)-doped CaO nanocomposites for efficient antibacterial potential and dye degradation. The addition of GO into CaO quantum dots (QDs) improves charge transfer and reduces the recombination rate of electron holes. Various concentrations of GO-doped CaO showed excellent catalytic activity for methylene blue degradation. Additionally, the GO-doped CaO exhibited remarkable bactericidal potency against Escherichia coli.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Hafiz Muhammad Zubair Arshad, Muhammad Imran, Ali Haider, Iram Shahzadi, Muhammad Mustajab, Anwar Ul-Hamid, Walid Nabgan, Francisco Medina, Sadaf Aslam, Muhammad Ikram
Summary: In this study, graphene oxide (GO)/carbon sphere (CS)-doped aluminum oxide (Al2O3) nanostructures (NSs) were synthesized to enhance structural stability and catalytic activity. The incorporation of GO into Al2O3 reduced the number of charge carriers and band gap energy. The modified Al2O3-GO composite showed potential for dye degradation and antibacterial activity. Characterizations confirmed excellent catalytic activity against rhodamine B dye and effective antimicrobial activity against Escherichia coli.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Abdulaziz Aldureid, Daniel Montane, Jordi Llorca, Francesc Medina
Summary: Ni-Mg/Al mixed oxide catalysts derived from LDHs exhibited excellent performance in the one-pot production of tetrahydrofurfuryl alcohol (TFA) from furfural (FF).
CHEMISTRY-SWITZERLAND
(2023)
Review
Materials Science, Multidisciplinary
Vaibhav Vilas Andhalkar, Shin Ying Foong, Seng Hon Kee, Su Shiung Lam, Yi Herng Chan, Ridha Djellabi, Kesaven Bhubalan, Francesc Medina, Magdalena Constanti
Summary: To support sustainable bioeconomy, there is increased focus on producing polyhydroxyalkanoates (PHAs) using renewable biomass. However, challenges such as expensive biomass pretreatment and low PHA yield in large-scale production must be overcome. This review article critically summarizes the latest advances in metabolic engineering strategies that develop high-performance strains converting biomass to PHAs with co-products, and outlines a roadmap for integrated biorefinery strategies and economic assessment of sustainable PHA production. Current and future challenges in transferring this technology to real-world applications are also discussed.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Sumaira Rasool, Muhammad Imran, Ali Haider, Anum Shahzadi, Walid Nabgan, Iram Shahzadi, Francisco Medina, Mohammed M. Algaradah, Ahmed M. Fouda, Ali Al-Shanini, Muhammad Ikram
Summary: This work demonstrates the efficient degradation of toxic RhB dye from polluted water using CDs/CS-doped La2O3 NRs under different pH conditions. The dopants significantly modify the structural and optical properties of La2O3, leading to increased absorption and reduced bandgap energy. The doping also enhances the antibacterial activity, with a 4.15 mm inhibition zone observed against Escherichia coli.
Article
Multidisciplinary Sciences
Tijani Hammedi, Rahma Bensouilah, Abdelkader Ouakouak, Jordi Llorca, Francisco Medina Cabello, Zouhaier Ksibi
Summary: This study investigated the catalytic wet air oxidation of p-hydroxybenzoic acid using Ru-based catalysts supported on various materials. The physicochemical properties of the catalysts were analyzed using various characterization techniques. The presence of cerium was found to enhance the catalytic activity by increasing the surface-active oxygen through a redox process.
Article
Chemistry, Multidisciplinary
M. Mezyen, G. El Fidha, N. Bitri, F. Harrathi, I. Ly, E. Llobet
Summary: This paper explores the impact of dysprosium (Dy) doping on the structural, optical, and photocatalytic properties of tin oxide (SnO2) thin films. The results show that dysprosium doping can improve the crystalline quality and film quality, and can also change the crystal orientation. Additionally, dysprosium doping leads to the formation of numerous micro-aggregates on the film's surface. Importantly, SnO2:Dy 5% thin films exhibit high degradation efficiency under solar irradiation.
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)
