Article
Chemistry, Analytical
Shi-Hua Chen, Zong-Yin Song, Xiang-Yu Xiao, Hong-Qi Huang, Yuan-Fan Yang, Pei-Hua Li, Meng Yang, Xing-Jiu Huang
Summary: Vacancy and doping engineering were used to improve the electrocatalytic ability of nanomaterials for detecting heavy metal ions. The P-doped material showed enhanced sensitivity and selectivity towards As(III), and the vacancies provided abundant electrons to form active centers.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
E. I. Maksyutova, A. V. Sidelnikov, A. G. Mustafin, E. V. Govorov
Summary: Electrochemical methods of analysis are increasingly being used in various industries to improve product quality. This study focuses on sugar and sugar color, proposing a method to differentiate sugars and colors from different manufacturers. This method can be applied in the food industry for rapid analysis of the origin of sugar and other soluble products.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Chaohui Wang, Xia Qiu, Haoran Tang, Renjia Li, Yongxin Li
Summary: In this study, the dynamic collision behaviors of single nano particles with nano-sized electrodes in a confined space were explored to understand the intrinsic reaction mechanism. The collision/oxidation events of silver nanoparticles on gold nanodisk electrodes and nanopore electrodes were investigated, showing different behaviors and oxidation charges. The oxidation collision of aggregates of silver nanoparticles exhibited higher peak currents, longer relaxation times, and more obvious shoulder peaks. Understanding these dynamic oxidation processes can benefit applications in electrochemistry, electrocatalysis, and energy-related research.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Sathish Panneer Selvam, Le Minh Tu Phan, Sungbo Cho
Summary: To rapidly screen SARS-CoV-2 infected individuals, researchers developed a specially designed gold-DNA-CdTe quantum dot probe to target two sections of the N gene of SARS-CoV-2 RNA. The sensor exhibited a wide detection range and low detection limit without amplification, and showed excellent selectivity against MERS and HCoV-NL63.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Xingye Liu, Xin Wang, Jianjie Li, Menglong Qu, Min Kang, Cheng Zhang
Summary: Electrochemical detection, especially anodic stripping voltammetry (ASV), is widely used for heavy metal ion detection due to its high sensitivity, low detection limit, and on-site real-time detection capability. However, the reliance on modified sensors in ASV detection complicates the preparation process and introduces contaminants. In this study, a preconcentration relaxation strategy was developed to improve the detection performance of bare sensors without modification, leading to a wider detection range, higher sensitivity, and lower detection limit for lead ion detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Asmaa Galal Ali, Mahmoud Fatehy Altahan, Amr Mohamed Beltagi, Abla Ahmed Hathoot, Magdi Abdel-Azzem
Summary: This study introduces an electrochemical sensor with a carbon paste electrode modified with multiwall carbon nanotubes and poly(1-aminoanthraquinone) for the detection of selenite in water samples. The sensor exhibits good analytical performance and precision, making it applicable for wastewater analysis.
Article
Electrochemistry
Meng-Hua Ye, Jun-Rong Chen, Han-Zhou Sun, Hong -Bo Xiao, Ting Yang, Wen-Lei Wang, Qing-Ji Xie
Summary: This study reports the fabrication of a novel electrode for the efficient determination of As(III) in solution and achieves satisfactory results in river water samples.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Wen-Juan Wang, Xin-Yang Lu, Fen-Ying Kong, Heng-Ye Li, Zhong-Xia Wang, Wei Wang
Summary: In this study, rGO/Au-Bi nanocomposites were successfully synthesized and used for simultaneous electrochemical determination of Pb2+ and Cd2+. The results showed that under optimized conditions, the proposed electrode exhibited good linearity and low detection limits for Pb2+ and Cd2+. The electrode also demonstrated excellent resistance to interference, high stability, and good repeatability.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Gul Sirin Ustabasi, Ismail Yilmaz, Mustafa Ozcan, Ebru Cetinkaya
Summary: Pencil graphite electrode modified with MWCNT and Bi3+ showed improved sensitivity and reduced charge transfer resistance in the simultaneous analysis of Pb2+, Cd2+, and Zn2+. This modification method offers effective electroanalytical performance with low time consumption and cost.
Article
Chemistry, Analytical
Aymara da Silva Santos, Carolina Zeni Pires Mecca, Tiago Luiz Ferreira, Fabio Ruiz Simoes, Lucia Codognoto, Eliana Maira Agostini Valle
Summary: The interaction between the pesticide carbendazim and the metal ion Pb2+ was studied using electrochemical techniques. The presence of Pb2+ affected the electrochemical signal of carbendazim, indicating complex formation. The electroanalytical method was found to be feasible for the analysis of carbendazim in the presence of Pb2+.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Artur Huseinov, Abdul Hoque, Kyle A. Ruble, Brandon J. Dee, Noe T. Alvarez
Summary: This study presents a reagentless sample preparation method for the detection of particulate Pb contaminants in tap water using membrane electrolysis. The membrane electrolysis allows for the in-situ generation of nitric acid, which, when combined with anodic stripping voltammetry, provides a powerful and reagent-free detection of Pb2+. The setup configuration enables semi-autonomous operation and requires minimal attention, making it more suitable for continuous measurements of particulate contaminants in tap water.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Randeep Kaur, Shweta Rana, Ranjeet Kaur, Navneet Kaur, Bhupender Singh
Summary: A novel PEDOT-AA-BTZ-Au-based Hg2+ selective hybrid electrochemical sensor has been designed for the detection of mercury ions. The sensor offers high sensitivity, selectivity, and low interference in real samples such as lake water and cosmetic products.
Article
Chemistry, Multidisciplinary
Yun Du, Chenglong Sun, Yuru Shen, Luyao Liu, Mingjian Chen, Qingji Xie, Hongbo Xiao
Summary: A novel electrode for sensitive analysis of As(III) was prepared, by cast-coating multiwalled carbon nanotubes on a glassy carbon electrode, enabling stable loading of gold nanoparticles and gold staining for efficient detection of As(III) through linear sweep anodic stripping voltammetry.
Article
Electrochemistry
Luz E. Rebolledo-Perales, Giaan A. Alvarez Romero, Israel Ibarra, Carlos Andres Galan-Vidal, Juan Francisco Flores-Aguilar, I Perez-Silva
Summary: A highly selective sensor based on carbon paste electrodes (CPE) and ion-imprinted polymers (IIP) was proposed for the analysis of lead (II) in real water samples. By optimizing the analysis parameters, a linear concentration range and low detection limit were achieved. The method allows accurate quantification of lead (II) in complex samples without pre-treatment.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Antonia Perju, Antje J. Baeumner, Nongnoot Wongkaew
Summary: In this study, printable freestanding laser-induced carbon nanofibers (f-LCNFs) with outstanding analytical performance were developed and easily integrated into miniaturized devices through a paper-based microfluidic strategy. The f-LCNFs exhibited high selectivity for dopamine when modified with Nafion. The integration of these nanomaterials into closed microfluidic systems shows great potential for the production of affordable lab-on-a-chip devices.
Article
Chemistry, Analytical
Xinjia He, Ying Ying, Xiao Zhao, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: A sensitive photoelectrochemical (PEC) sensor for aflatoxin B1 (AFB1) detection was developed using cobalt-doped tungsten trioxide nanorods/Au nanoparticles as the active material. The sensor showed a broad linear range and low detection limit.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Lin Cao, Yueming Tan, Wenfang Deng, Qingji Xie
Summary: A dual-signal electrochemical immunosensor based on MWCNTs-CoP as an electrocatalytic label has been developed for CEA detection. The sensor shows excellent performance with low detection limits for CEA detection based on both HER and OER signals. This work provides a new platform for double-signal immunosensing based on a bifunctional water splitting electrocatalyst.
Article
Chemistry, Multidisciplinary
Xiao Zhao, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: By varying the concentration of microRNA-141, the amount of glucose oxidase immobilized on the bioanode can be easily controlled, allowing for sensitive detection of microRNA-141 using a glucose/O-2 biofuel cell as a self-powering sensor.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Ying Ying, Min Zhou, Si Dai, Ming Ma, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: In this work, a novel photoactive material consisting of SnO2 nanoparticles-decorated ZnIn2S4 nanosheets was developed for the photoelectrochemical/electrochemical dual-signal detection of RNase A. The modification of Au nanoparticles on the material not only facilitated the immobilization of DNA probes but also enhanced the photocurrent exciton-plasmon coupling effect. This approach enabled efficient and reliable detection of RNase A in a dual mode.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Hui Wang, Lu Yang, Yueming Tan, Wenfang Deng, Qingji Xie
Summary: In this study, a novel electrochemical immuno-biosensor was developed using dendritic mesoporous silica nanospheres (DMSNs) loaded with silver sulfide quantum dots (Ag2S QDs) as signal amplification labels. The immuno-biosensor exhibited high sensitivity, rapid response, and selectivity for the detection of foodborne pathogen Staphylococcus aureus (S. aureus).
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Min Zhou, Hui Huang, Xiao Zhao, Zhong Cheng, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: This study reports a novel signaling strategy for photoelectrochemical (PEC) immunoassays based on the electro-Fenton degradation of liposomes. By degrading the liposomes, the photogenerated holes can be effectively scavenged by ascorbic acid, resulting in a sensitive signal for the target in PEC immunoassays.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Xiao Zhao, Jinhua Yang, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: In this study, a microbial fuel cell (MFC) based on lipopolysaccharide (LPS)-lectin interactions was developed, which exhibited a short startup time and high power density. The immobilization of Con A lectin on a carbon cloth electrode with Au nanoparticles (AuNPs) as a bridge accelerated the inoculation speed of bacteria and increased their loading capacity on the anode. The MFC was also used as a self-powered biosensor for detecting heavy metal toxicity in water, with Hg2+ concentration showing a linear decrease in output current density.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Jinhua Yang, Guihua He, Wenying Wu, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: In this study, we developed a photoelectrochemical (PEC) biosensor using Au nanoparticles (AuNPs)/SnS2/ZnIn2S4 as the active material, for sensitive detection of T4 polynucleotide kinase (T4 PNK) based on an enzymatic reaction induced DNA structure switch strategy. The PEC biosensor exhibited high performance with a wide detection range and low detection limit, and can also be used for screening enzyme inhibitors.
Article
Biophysics
Xiao Zhao, Guihua He, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: This study developed a self-powered biosensing platform for highly sensitive miRNA detection by regulating the enzymatic loading capacity on the bioanode using concatenated catalytic hairpin assembly/hybridization chain reaction. The platform showed a wide dynamic range and ultralow detection limit for miRNA-141 detection.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Analytical
Hui Huang, Si Dai, Lanxin Xie, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: CdS quantum dots modified CuBi2O4 nanorods are proposed as highly active and etchable photocathodic materials for sensitive photoelectrochemical (PEC) immunoassay. The growth of CdS QDs on CuBi2O4 nanorods enhances the cathodic photocurrent due to the formation of p-n heterojunctions, and CdS QDs can be etched by H2O2 to serve as an etchable photocathodic material. PEC immunoassay of carcinoembryonic antigen (CEA) is realized by using glucose oxidase (GOx)-conjugated immunomagnetic beads as labels, with a wide linear range and a low detection limit.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Xiao Zhao, Rong Liao, Yueming Tan, Wenfang Deng, Qingji Xie
Summary: In this study, a highly sensitive self-powered biosensing platform for miRNA detection was developed. The platform integrates a glucose/O2 biofuel cell, CRISPR-Cas12a cleavage, and DSN-assisted target recycling, enabling ultrasensitive sensing of miRNA-155.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Rong Liao, Si Dai, Biao Liu, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: A novel strategy for photocurrent polarity switchable sensing is reported in this study by regulating electrostatic interactions between two semiconductor photoactive materials. The method achieves low detection limits and a wide linear detection range in the detection of HAase activity, providing a new and effective approach for photocurrent polarity switching and HAase activity detection.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhong Cheng, Wenfang Deng, Rong Chen, Linli Tan, Chao Xie, Ming Ma, Yueming Tan
Summary: The doping of ruthenium in nickel-based nanomaterials promotes the formation of catalytically active species and enables efficient electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) with high stability and yield.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Analytical
Si Dai, Hui Huang, Shihan Liu, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: In this study, Au nanoclusters (AuNCs) were used as both photosensitizers and peroxidase mimics for sensitive PEC sensing of Hg2+. The AuNCs improved the PEC activity of WO3 nanorods as photosensitizers, and catalyzed precipitate formation on the photoelectrode as peroxidase mimics. The presence of Hg2+ inhibited the AuNCs-catalyzed precipitate formation, leading to an increase in the photocurrent of the photoelectrode for the PEC detection of Hg2+.
Article
Chemistry, Multidisciplinary
Ying Ying, Wenying Wu, Guihua He, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: CdS quantum dots are used to sensitize Zr-MOFs in this study through the attachment with DNA as a bridge. The sensitization of Zr-MOFs by CdS QDs is regulated by the alkaline phosphatase-catalyzed hydrolysis of tripolyphosphate. This approach enables sensitive signal-on PEC detection of ALP activity.
CHEMICAL COMMUNICATIONS
(2022)