Article
Engineering, Chemical
Suherman Suherman, Muh Supwatul Hakim, Agus Kuncaka
Summary: A new optical chemical sensor was developed using the Sol-Gel method for determination of Ni2+ ions in aqueous solutions. The sensor showed optimal response towards Ni2+ ions at pH 8.5 with a contact time of 10 minutes. The calibration curve had a linear concentration range of 1-5 mg L-1, with a detection limit of 0.111 mg L-1.
Article
Chemistry, Inorganic & Nuclear
Huiming Ji, Lu Zhang, Rui Zhang
Summary: Multiferroic BiFeO3 particles with size of about 50 nm and good crystallinity were prepared via a simple sol-gel method and annealing. The VOCs sensing properties of BiFeO3 sensor were tested under both traditional thermal excitation and synergetic thermal-magnetic excitation, and the results showed improved performance under the latter condition. The effect of magnetic field on the sensor can be attributed to decreased defects on domain walls, excitation of gas molecules, and activation of surface-absorbed oxygen species.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Polymer Science
Jeremy Avice, Guillaume Brotons, Pascal Ruello, Gwenaelle Vaudel, Amira Guediche, Herve Piombini
Summary: The coating process based on self-assembly of sol-gel silica nanoparticles and post-treatment with ammonia vapor has been successfully optimized for industrial production. It offers advantages such as cost-effectiveness, compatibility with large-sized optical components, low optical losses, and high laser fluence resistance. The post-treatment process using room-temperature ammonia vapors greatly enhances the adhesion and abrasion resistance of the optical components.
Article
Materials Science, Ceramics
Rina R. Tikare, Rohit R. Powar, Sharadchandra S. Patil, Dhanaji G. Kanase
Summary: Mixed metal oxides with different iron content (x = 0.2-1.0) were synthesized using sol-gel auto combustion process. The properties of the oxide materials were characterized using various techniques. The results showed that the replacement of aluminium ions affected the structure, bandgap, and crystallite size of the mixed metal oxides. The iron-substituted aluminate gas sensors exhibited good performance in detecting gases such as CO, H2S, and NO2.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
M. D. Fernandez-Ramos, L. F. Capitan-Vallvey, L. M. Pastrana-Martinez, S. Morales-Torres, F. J. Maldonado-Hodar
Summary: A resistive sensor based on carbon gel-TiO2 nanocomposites has been developed to detect ammonia gas, showing good sensitivity, selectivity, stability, and resistance to humidity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
E. M. Ezz Elregal, M. A. Ahmed, M. F. Abdel-Messih, Z. M. Abou-Gamra
Summary: ZnO nanoparticles were prepared using a template-free sol-gel method and characterized by various techniques. The nanoparticles exhibited strong UV emission and low intensity bands indicating defects in ZnO, resulting in high catalytic activity. The photocatalytic degradation of Fluorescein dye showed efficient degradation and complete mineralization.
Article
Chemistry, Analytical
Ting-Hsuan Huang, Pei-Yi Li, Jin-Bin Yang, Te-Yao Liu, Mei-Hsin Chen, Po-Tsun Liu, Hsin-Fei Meng, Chia-Jung Lu, Olivier Soppera, Ping-Hung Yeh, Hsiao-Wen Zan
Summary: Room-temperature-operated sensitive NO2 sensors were developed using a sol-gel thin-film device with a vertical channel structure, demonstrating unique sensing modulation characteristics. By adjusting the film composition, the level of hydroxyl group was identified as the dominant factor influencing sensitivity. The sensors exhibited good selectivity, repeatability, and shelf lifetime.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Maria Zdonczyk, Bartlomiej Potaniec, Marcin Skorenski, Joanna Cybinska
Summary: This paper presents a comparison of different methods (conventional or microwave heating) for the simultaneous preparation of di-O-alkylated and ether-ester derivatives of fluorescein. It is found that using a microwave reactor shortens the reaction time and increases efficiency. The application of a ball-assisted method for exclusively obtaining ether-ester derivatives is also described for the first time.
Article
Engineering, Electrical & Electronic
LiangLiang Liu, Zijuan Tang, Chenyang He, Serhiy Korposh, Shuqin Lou, Stephen P. Morgan
Summary: The optical fibre ammonia gas sensor demonstrated in the study utilizes a functionalized suspended-core fibre and a ratiometric method for signal processing, showing a capability of detecting ammonia at ppb levels with a fast response time and reusability after treatment.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Yusran Sulaiman, Abdul Hadi Ismail, Mohd Hanif Yaacob, Mohd Adzir Mahdi
Summary: This study presents the long-term sensitivity performance of conducting polymers and metal-organic frameworks coated on side-polished plastic optical fiber (SP-POF). Various analyses were conducted to validate the presence of functional groups, porosity, and surface area of the active materials. The results show that ES-EB composite coated SP-POF exhibits good optical NH3 sensitivity and stability over an extended period, outperforming other coated materials.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Analytical
Xiqian Sun, Qing Lan, Jing Geng, Mengli Yu, Yecheng Li, Xiaohong Li, Li Chen
Summary: By assembling TiO2 nanoparticles decorated with polyoxometalate (POM) and organic dye molecules, we have achieved accelerated room-temperature sensing of NO2 gas under visible light illumination. This method improves the sensitivity and response/recovery time of the gas sensors, while maintaining high selectivity and relatively low detection concentration.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Minwoo Cho, Tae-yil Eom, Srijita Nundy, Joon-Shik Park, Hoo-Jeong Lee
Summary: Based on hafnium-added indium zinc oxide (Hf-IZO), a nitrogen dioxide (NO2) gas sensor was produced and showed high response and selectivity to NO2 gas, as well as long-term stability. The sensing performance of the 15 at% Hf-IZO sensor is linked to the concentration of oxygen vacancies generated by the hafnium doping.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Polymer Science
A. Borhade, V. D. Bobade, D. R. Tope, J. A. Agashe, S. S. Kushare
Summary: Gas detection is important for various applications, and in this study, FeCr2O4, FeCr2O4@ZnO, and FeCr2O4@ZnO@MgO core-shell nanostructures were synthesized and tested for gas sensing performance. Characterization through XRD, FT-IR, SEM, EDX, and TEM confirmed the crystal structure and morphology of the synthesized oxides, which showed promising sensitivity to different gases. Thermal annealing and humidity effects on the sensing performance were also investigated.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Ceramics
Rina R. Tikare, Rohit R. Powar, Vinayak G. Parale, Hyung-Ho Park, Tukaram J. Shinde, Dhanaji G. Kanase
Summary: The nanosphere decorated needle-like zinc-substituted aluminate samples (ZAN) were successfully synthesized by a sol-gel auto-combustion method, with their structural and morphological properties investigated through various analytical methods. The results showed that the ZAN sensor was sensitive and selective to H2S gas, and exhibited optimal response to H2S gas at 200 degrees Celsius.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Edilene A. da Silva, Cedric Samuel, Leonardo N. Furini, Carlos Jose L. Constantino, Nathalie Redon, Caroline Duc
Summary: In this study, highly sensitive ammonia sensors based on acidic-doped polyaniline and polyurethane were proposed. The influence of polyurethane on the film structure and sensing performances of polyaniline was investigated by varying the mass ratios between the polymers. The results showed that the presence of polyurethane significantly enhanced the sensitivity of the sensors without interfering with the main sensing features of polyaniline. Furthermore, polyurethane mitigated the influence of humidity on the sensors and decreased the drift of the devices, increasing their lifespan.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Farshid Salimijazi, Jaehwan Kim, Alexa M. Schmitz, Richard Grenville, Andrew Bocarsly, Buz Barstow
Article
Chemistry, Physical
Jessica J. Frick, Guangming Cheng, Satya Kushwaha, Nan Yao, Sigurd Wagner, Andrew B. Bocarsly, Robert J. Cava
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Sungyeon Heo, Kwangdong Roh, Fengyu Zhang, Steven E. Tignor, Andrew B. Bocarsly, Antoine Kahn, Barry P. Rand
Summary: Electrochemical n-doping of halide perovskites is challenging due to limited electrochemical stability. In this study, we report the successful electrochemical n-doping of CsPbBr3 nanocrystal films within stable potential windows. The nanocrystal films show enhanced n-doping properties compared to bulk films, and the n-doped films exhibit Fermi level shifts and increased conductivity and photoluminescence intensity.
ACS ENERGY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Kailyn Y. Cohen, Rebecca Evans, Stephanie Dulovic, Andrew B. Bocarsly
Summary: The Bocarsly Research Group focuses on developing new electrochemical and photochemical processes for the conversion of CO2 into organic compounds. Their studies on proton-coupled charge transfer mechanisms have shown promising results in producing C1 and carbon-carbon bonded products. The research has significant implications for the synthesis and fuel alternatives to fossil fuels.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Steve P. Cronin, Stephanie Dulovic, Josef A. Lawrence, Kai A. Filsinger, Alma Paola Hernandez-Gonzalez, Rebecca Evans, Joseph W. Stiles, Jalah Morris, Istvan Pelczer, Andrew B. Bocarsly
Summary: The modification of a Cr-Ga oxide electrocatalyst through the introduction of nickel generates a high faradaic efficiency in producing 1-butanol. At certain potentials, 3-hydroxybutanal becomes the primary product. Mechanistic studies show that formate is the initial CO2 reduction product and acetaldehyde is the key intermediate.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Kailyn Y. Cohen, Rebecca Evans, Andrew B. Bocarsly
Summary: This study investigates the relationship between the catalytic activity of [Mn(bpy)(CO)(3)Br] and the steric and electronic properties of the aromatic diimine ligand. It is found that as the p-system in the ligand expands, the propensity of the complexes to dimerize photochemically increases. Additionally, the second reduction event becomes more thermodynamically favorable as the p-system expands, approaching the potential of the first reduction event.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Kailyn Y. Cohen, Delaan G. Nedd, Rebecca Evans, Andrew B. Bocarsly
Summary: Without a photosensitizer, [Mn(bpy)(CO)(3)(CN)] (MnCN) can produce [Mn(bpy)(CO)(3)](-) via photochemical reaction, which is the active species for CO2 reduction. While dissociation of the axial X-ligand upon irradiation of fac-[M(N-N)(CO)(3)X] complexes (M = Mn or Re; N-N = bipyridine (bpy) ligand; X = halogen or pseudohalogen) is well-documented, the axial cyanide ligand remains intact during the irradiation of either [Mn(bpy)(CO)(3)(CN)] or [Mn(mesbpy)(CO)(3)(CN)], MnCN(mesbpy). The formation of [Mn(bpy)(CO)(2)(MeCN)(CN)] (s-MnCN) as the primary product during the irradiation of MnCN is confirmed by infrared and UV-vis spectroscopy. An in-depth analysis of the photochemical mechanism for the formation of [Mn(bpy)(CO)(3)](-) from MnCN is presented. MnCN(mesbpy) is too sterically hindered to undergo the same photochemical mechanism as MnCN, but it shows electrocatalytic activity for CO2 reduction to CO, highlighting an interesting distinction between photochemical and electrochemical charge transfer.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Kailyn Y. Cohen, Adam Reinhold, Rebecca Evans, Tia S. Lee, Hsin-Ya Kuo, Delaan G. Nedd, Gregory D. Scholes, Andrew B. Bocarsly
Summary: The mechanism of the photochemical reduction of CO2 to CO by [Mn(bpy)(CO)(3)](2) has been investigated. It was found that the reaction occurs at the Mn axial ligation site and leads to the formation of a metal-metal bonded dimeric species. In photolysis experiments, it was observed that the radical species [Mn(bpy)(CO)(3•)] interacts with CO2. Therefore, this species may serve as a photochemical reagent for the conversion of CO2 to CO.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Brian M. Foster, Aubrey R. Paris, Jessica J. Frick, Daniel A. Blasini-Perez, Robert J. Cava, Andrew B. Bocarsly
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Inorganic & Nuclear
Hsin-Ya Kuo, Steven E. Tignor, Tia S. Lee, Danrui Ni, James Eujin Park, Gregory D. Scholes, Andrew B. Bocarsly
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Inorganic & Nuclear
Steven E. Tignor, Travis W. Shaw, Andrew B. Bocarsly
DALTON TRANSACTIONS
(2019)
Meeting Abstract
Chemistry, Multidisciplinary
Danrui Ni, Hsin-Ya Kuo, Robert Cava, Andrew Bocarsly
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Meeting Abstract
Chemistry, Multidisciplinary
Hsin-Ya Kuo, Tia Lee, Steven Tignor, Gregory Scholes, Andrew Bocarsly
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Physical
Aubrey R. Paris, Andrew B. Bocarsly
FARADAY DISCUSSIONS
(2019)
Article
Chemistry, Inorganic & Nuclear
Hsin-Ya Kuo, Tia S. Lee, An T. Chu, Steven E. Tignor, Gregory D. Scholes, Andrew B. Bocarsly
DALTON TRANSACTIONS
(2019)
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)
