Article
Chemistry, Analytical
Min Chen, Fangjing Mo, Hui Meng, Cun Wang, Jiang Guo, Yingzi Fu
Summary: A novel curing sacrificial agent-induced dual-heterojunction photoelectrochemical system was proposed for highly sensitive detection of prostate-specific antigen (PSA). This system exhibited excellent photocurrent performance and a low detection limit, providing a new opportunity for the development of biosensors in the PEC field.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Huiyue Li, Ying Li, Xue Zhang, Pan Liu, Meng He, Chunya Li, Yanying Wang
Summary: A novel NIR-excited PEC immunosensor based on ionic liquid functionalized metal organic framework and gold nanoparticles was developed for high-performance determination of CEA. The integration of gold nanoparticles enhanced the photoelectric conversion efficiency of Yb-MOF in the NIR region, allowing for accurate detection of CEA.
Article
Biophysics
Jiang Guo, Li Song, Min Chen, Fangjing Mo, Wanqing Yu, Yingzi Fu
Summary: A Schottky-functionalized direct Z-scheme hetero-junction photovoltaic material was designed by electrodeposition of gold nanoparticles on two kinds of bismuth oxyhalide composites surface, resulting in enhanced light harvest and photoelectric conversion efficiency. A signal-off PEC biosensor was fabricated for highly sensitive detection of carcinoembryonic antigen (CEA) using this material, which exhibited a wide detection range and a low detection limit.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Biophysics
Min Chen, Hui Meng, Fangjing Mo, Jiang Guo, Yingzi Fu
Summary: The signal enhancement photoelectrochemical immunoassay system induced by a composite of electron donor-acceptor with Schottky heterojunction was designed for quantitative detection of CEA. The proposed immunoelectrode showed dynamic ranges of 0.5 fg mL-1 to 10 pg mL-1 and 10 pg mL-1 to 1 µg mL-1 with a detection limit of 0.17 fg mL-1. This PEC strategy with acceptable selectivity and stability can potentially be applied to detect other targets by choosing appropriate target recognition units.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Jorge Becerra, Duc-Trung Nguyen, Vishnu Nair Gopalakrishnan, Trong-On Do
Summary: This article reports a new method for synthesizing chemically bonded gold nanoparticles/ZIF-67 nanocomposites, in which a capping agent is used to facilitate the close contact or chemical bonding at the interface, achieving excellent photocatalytic CO2 reduction performance.
Article
Chemistry, Analytical
Lu Li, Chenglong Sun, Jiahui Li, Jialin Liu, Yunlong Li, Qingji Xie
Summary: In this study, AgBiS2 and In2O3 materials were synthesized and an In2O3/AgBiS2/FTO photoanode was fabricated. The signal-attenuated photoelectrochemistry sandwich immunoassay of squamous cell carcinoma antigen (SCCA) was achieved on this photoanode using a competitive light absorption and electron donor depletion strategy. Under optimized conditions, the photocurrent showed a linear relationship with the logarithm of SCCA concentration, with a detection limit of 0.62 pg mL(-1) (S/N = 3). The immunoassay of SCCA in human serum samples yielded satisfactory recovery (92.0 to 103%) and relative standard deviation (5.1 to 7.8%) results.
Article
Chemistry, Physical
Pannan Kyesmen, Nolwazi Nombona, Mmantsae Diale
Summary: This research focused on preparing nanostructured heterojunction of alpha-Fe2O3 and porous CuO composites as photoanodes for PEC water splitting. The formations of heterojunction and porous surface morphology facilitated charge separation and enhanced PEC efficiency. The reduced bandgap and increased photon absorption in the visible spectrum were key factors in improving photocurrent density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Cheol Hyoun Ahn, Nishad G. Deshpande, Ho Seong Lee, Hyung Koun Cho
Summary: By decorating the BiVO4 surface with zeolitic imidazolate framework-67 (ZIF-67), the study achieved improved photocatalytic performance and efficient water oxidation reaction. The hybrid ZIF-67/BiVO4 photoanodes exhibited high photocurrent density and stability, overcoming the intrinsic material limitations of BiVO4 photoelectrodes.
Article
Materials Science, Multidisciplinary
Rongrong Ma, Rajesh Pathak, Dongping Zheng, Yingjie Zhang, Jie Xing, Junhong Liu, Yuanyuan Jiang, Mingxing Xiao, Fan Wu
Summary: The three-dimensional ZnO/CuO nano-heterogeneous hierarchical structure array demonstrated significant absorption of visible light and enhanced photocurrent. The charge dynamics processes were studied by comparing electrochemical impedance spectroscopy and intensity modulation photocurrent spectroscopy in both the core-shell ZnO/CuO nano-heterostructure array and the three-dimensional ZnO/CuO nano-heterostructure array.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Zhengming Yu, Yunkai Lv, Fang Zhang, Qi Shi, Ke An, Feng Huang, Tingting Fan, Gang Li, Jing Wang
Summary: In this study, a series of BiOCl@NH2-MIL-125(Ti-Zr) heterostructures with different NH2-MIL-125(Ti-Zr) contents were fabricated by solvothermal method. The composite photocatalyst demonstrated superior visible light photocatalytic activity, attributed to the improved electron transfer efficiency and heterojunction structure between BiOCl and NH2-MIL-125(Ti-Zr).
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Rui-Ping Li, Shui-Miao Yu, Zong-Yan Zhao
Summary: This study aims to enhance the photoelectrochemical (PEC) properties of CuFeO2 nanosheets by constructing closely bonded CuFeO2/ CuO heterostructures. Through an optimized fabrication process, the CuFeO2@VO-CuO core-shell architecture showed significantly improved PEC performance, with higher photocurrent density and overall efficiency. The solid atomic-level contact bonding at the CuFeO2@VO-CuO junction and the presence of oxygen vacancies play important roles in achieving efficient separation and transfer of photogenerated electron-hole pairs.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiao-Mei Cheng, Yuming Gu, Xiao-Yu Zhang, Xiao-Yao Dao, Shi-Qing Wang, Jing Ma, Jing Zhao, Wei-Yin Sun
Summary: This study investigates the effect of facet exposure on the photocatalytic CO2 reduction reaction using six types of MIL-125-NH2(Ti) as model catalysts. The {110}/{111}-heterojunction facet shows significantly enhanced catalytic activity compared to the single {001} facet, providing insights into the facet-related mechanisms and potential applications for enhancing surface catalytic reactions in MOFs materials.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Jingyi Ma, Qian Wang, Linli Li, Xiaohang Zong, Hao Sun, Ran Tao, Xiaoxing Fan
Summary: Fe2O3/CuO p-n heterojunction photoelectrode films were fabricated by growing CuO nanoparticles on Fe2O3 nanorods via an impregnation method. The obtained Fe2O3/CuO photoelectrodes exhibited high intensity of visible-light absorption and excellence photoelectrochemical (PEC) performance. The enhanced PEC performance was mainly contributed by the enhanced charge separation and the synergism achieved in Fe2O3/CuO p-n heterojunctions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Gaohui Wu, Meng Li, Zhigang Luo, Liang Qi, Long Yu, Shaobo Zhang, Hongsheng Liu
Summary: For complex cascade biocatalysis, the optimization of substrate transport channels and promotion of orderly and tunable step reactions can be achieved through multienzyme compartmentalization. In this study, a simple synthesis strategy is proposed to construct a multienzyme biocatalyst by compartmentalizing glucose oxidase and horseradish peroxidase within core-shell zeolite imidazole frameworks. The strategy involves biomimetic mineralization and fine regulation of the zeolite growth process to accurately localize the bienzyme system. The versatile nature of this strategy is demonstrated with ZIF-67. Additionally, lithocholic acid is used to improve the pore structure of the zeolite, enhancing mass transfer efficiency for the multienzyme cascade reaction.
Article
Biophysics
Cheng-Jun Li, Yi-Tong Xu, Meng-Jiao Lu, Yu-Mei Li, Rui Ban, Jin Hu, Ge Gao, Xiao-Ya Dong, Hong Zhou, Peng Lin, Wei-Wei Zhao
Summary: This study explores the application of MOF derivatives and their ionic modulation in OPECT biosensors, achieving high current gain and low detection limit for human IgG. This research is of great significance for developing various MOF derivative electronics with unknown possibilities.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)