Article
Materials Science, Ceramics
Leodoro P. dos Santos Filho, de F. P. Maria P. Nascimento, Liziane Marcal, Katia J. Ciuffi, Marcio L. A. e Silva, Eduardo J. Nassar, Lucas A. Rocha
Summary: The sol-gel process is an interesting strategy to obtain hybrid materials, with mesoporous silica showing large specific area and pore volume, and demonstrating efficient antimicrobial properties. Mesoporous silica matrixes prepared via the sol-gel process using surfactants and copolymers as structure-driving agents showed the most significant effects in the study.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Adil Alshoaibi, Shumaila Islam
Summary: The opto-chemical sensing matrices, D-SNIPs, D-TNIPs, and D-STNPs, exhibit thermally stable, large surface area, and different refractive indices. The prepared sensors show a linear response, non-leachability, stability towards high pH 12, and fast time response, making them suitable for practical pH sensing applications.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
J. J. Mikolei, D. Richter, R. Pardehkhorram, C. Helbrecht, S. Schabel, T. Meckel, M. Biesalski, M. Ceolin, A. Andrieu-Brunsen
Summary: Introduces the importance of mesopores in paper, which not only increase the specific surface area, but also have specific properties such as capillary fluid transport and ion specific pore accessibility. Investigates mesopore formation in paper using sol-gel chemistry and evaporation induced self-assembly, and discusses the influence of solvent evaporation rate and capillary fluid velocity on mesopore formation.
Article
Polymer Science
Dan Eduard Mihaiescu, Daniela Istrati, Alina Morosan, Maria Stanca, Bogdan Purcareanu, Rodica Cristescu, Bogdan Stefan Vasile, Roxana Doina Trusca
Summary: This research focuses on the study of cefotaxime absorption and desorption from different functionalized mesoporous silica supports to obtain new materials with sustained release properties. The MCM-41-type nanostructured mesoporous silica support was synthesized and characterized, showing good micro-structured homogeneity, high surface area, and high silanolic activity. Functionalization of the support was conducted to effectively link the cefotaxime compound. The release experiments revealed significant improved release capacity in the functionalized mesoporous silica support.
Article
Engineering, Chemical
Akira Miwano, Takehiro Yonezawa, Noriko Yamauchi, Kouichi Nakashima, Yoshio Kobayashi
Summary: The study suggests a new coating technique for thermistors using zirconia, which shows excellent chemical resistance and electrical insulation properties. Pre-silica coating on the substrate can improve the adhesion of ZrO2 films.
Article
Materials Science, Multidisciplinary
Raju Kumar Sharma, Gobinda Dey, Pritam Banerjee, Jyoti Prakash Maity, Chung-Ming Lu, Shau-Chun Wang, Yi-Hsun Huang, Pin-Yun Lin, Yung-Ping Chen, Chien-Yen Chen
Summary: This study investigated the synthesis of mesoporous silica nanoparticles using four different surfactants. The outcomes showed that Tween-80 and biosurfactant produced interesting results compared to CTAB and SDS-mediated silica nanoparticles.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Analytical
Verena Weber, Laura Brigo, Giovanna Brusatin, Giovanni Mattei, Danilo Pedron, Roberto Pilot, Raffaella Signorini
Summary: This paper presents the fabrication and characterization of a plasmonic/sol-gel sensor for detecting aromatic molecules, using xylene as the analyte with a detection limit of about 40 mM. Various investigations on different aromatic compounds were carried out to verify the identification of xylene.
Article
Materials Science, Multidisciplinary
Adi Darmawan, Dwi Lestari Handayani, Riza Eka Saputra
Summary: Hydrophobic silica layers were synthesized using the sol-gel method with MTES as the precursor, showing varying hydrophobicity at different pH levels and calcination temperatures. Increasing pH led to enhanced hydrophobicity in the silica film, while higher calcination temperatures resulted in decreased surface hydrophobicity.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
A. Bordoni, M. Lombardo, A. Wolosiuk
Summary: In this study, the use of microwave radiation as a postsynthesis treatment for expanding the pore size of non-calcined SiO2-based mesoporous materials was analyzed. Compared to traditional hydrothermal treatments, microwave irradiation significantly reduces the processing time and is compatible with various surfactant pore templates. This approach allows for easy postprocessing of non-calcined templated siliceous materials and customization of their final pore dimensions.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Adil Alshoaibi, Shumaila Islam
Summary: Sol-gel-based titania nanoparticles, Silica-titania nanocomposite, and zinc supported silica-titania nanocomposites were synthesized at low temperature. The study showed that zinc nanoparticles were homogeneously distributed in the silica-titania nanocomposite, and the doping of zinc enhanced the photocatalytic activity of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Chemistry, Multidisciplinary
Han Yandong, Han Mingyong, Yang Wensheng
Summary: The hydrolysis/condensation of orthosilicate is commonly used for preparing mesoporous silica materials. By adjusting the process in a multiphase interface, different mesoporous nanostructures can be constructed, offering new opportunities for expanding their application fields.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2021)
Article
Chemistry, Applied
Mingshuai Yuan, Wei Xu, Wukun Zhang, Jianhao Zhao, Huizi Li, Qingguo He, Wei Huang, Jiangong Cheng, Yanyan Fu
Summary: Fluorescent film sensors are widely used for detecting toxic gases, but the design and synthesis of high-performance sensitive materials are complex. This study demonstrates that the sensing performance of fluorescent sensors can be enhanced by simply growing or depositing zinc oxide film on a quartz substrate. The catalytic properties of the zinc oxide buffer effectively accelerate the sensing process between the probe molecules and H2O2 gas.
Article
Engineering, Environmental
Wenchao Duan, Murat Gunes, Antonio Baldi, Marti Gich, Cesar Fernandez-Sanchez
Summary: This paper describes the manufacturing and application of a miniaturized electrochemical sensor for measuring dissolved chemical oxygen demand (COD) in surface waters entering and exiting urban wastewater treatment plants. The sensor is produced using thin-film carbon electrodes and electrodepositing copper nanoparticles, allowing for a high linear range and low detection limit. It provides real-time monitoring of soluble organic load in urban wastewater.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Selvaraj Ranjith Priyan, Govindan Suresh Kumar, Srinivasan Surendhiran, Mohd. Shkir
Summary: In this study, spherical silica nanoparticles with tunable particle size and mesoporous properties were synthesized using rice husk as a low-cost silica source and polyethylene glycol (PEG) via microwave-assisted sol-gel synthesis. The results showed that changing the PEG concentration produced silica nanoparticles with different sizes and unique pore sizes and distributions. This approach provides a facile and cost-effective method to prepare mesoporous silica nanoparticles with controllable nanoscale characteristics.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Review
Pharmacology & Pharmacy
Marta Florensa, Marina Llenas, Esperanza Medina-Gutierrez, Stefania Sandoval, Gerard Tobias-Rossell
Summary: Research on silica nanoparticles, particularly mesoporous silica nanoparticles (MSNs), has rapidly increased in recent years. MSNs have been widely studied as nanocarriers for the treatment of various diseases due to their physicochemical properties and biocompatibility. This review provides an overview of recent advances in the field of silica nanoparticles, focusing on the synthesis of functional MSNs and their biomedical applications. The review also highlights the importance of synthesis conditions in determining the properties and behavior of MSNs.
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)