Article
Biophysics
Dong-Mei Liu, Chen Dong, Run-Tian Ma
Summary: A colorimetric method based on the oxidation reaction of ascorbic acid through the TMB/H2O2/HRP system is proposed for screening α-glucosidase inhibitors (AGIs) from flavonoids. The method allows facile identification of ascorbic acid and its inhibition by AGIs, providing a simple and novel approach for screening potential AGIs from natural compounds.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Biochemical Research Methods
Jun Liao, Zhicheng Yu, Li Fu, Jia Liu, Li Jia
Summary: The rapid and on-site detection of biothiols in complex samples remains a challenge, but this study developed a simple and enzyme-free colorimetric approach using 3,3',5,5'-tetramethylbenzidine (TMB) as the chromogenic substrate. A smartphone-based portable device integrated with test strips was constructed by 3D printing, allowing for the photocatalytic oxidation of TMB and the detection of biothiols within 5 minutes. The successful detection of cysteine in urine and milk samples demonstrates the device's potential for on-site assays.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Lingling Yuan, Wenjuan Guo, Yaru Fu, Zhuang Zhang, Pengcheng Wang, Jinping Wang
Summary: A method for qualitative and quantitative determination of GSH based on the reaction between CoOOH nanosheets and TMB has been developed, allowing for direct observation of color changes in the oxidized TMB. This method has a wide detection range, low detection limit, can be performed with high throughput 96-well plate, and has been successfully applied in SH-SY5Y neuroblastoma cells with excellent agreement with a commercial GSH detection kit.
MICROCHEMICAL JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Xiao Feng Yang, Wei He, Yuan Fang Li, Peng Fei Gao, Cheng Zhi Huang
Summary: In this study, a sensitive telomerase activity assay based on TMB2+ etching of gold nanorods was developed. The assay showed rapid detection and high stability, making it an important tool in clinical diagnosis.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Jun Liao, Yi Fan, Suqi Deng, Zhicheng Yu, Ruidong Meng, Li Jia
Summary: A dual-channel fluorescent sensor was developed for levofloxacin detection. The sensor utilized the light-activatable oxidase mimic property of levofloxacin to generate free radicals and oxidize colorless compounds, resulting in visible color and fluorescence signal changes. The sensor exhibited low detection limits for levofloxacin and was successfully applied in the detection of levofloxacin in food samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zhikun Zhang, Chunyan Shang, Wenmeng Zhao, Yapeng Cao, Jilong Han, Cuixia Hu, Yumin Liu
Summary: Colorimetric Mn2+ ions detection was developed using TMB and PEI decorated silver nanoparticles. By forming a coordination bond between PEI/TMB and Mn2+ ions, PEI-TMB-AgNPs probe changed color from red to green, while the morphology also changed. The method showed high sensitivity and selectivity for Mn2+ ions detection.
Article
Chemistry, Analytical
Kongxiang Wei, Honghong Rao, Xin Xue, Mingyue Luo, Zhonghua Xue
Summary: A simple and facile photothermometric sensor for acid phosphatase (ACP) was successfully fabricated by converting a color readout to a temperature readout using CoOOH nanoflakes-TMB colorimetric reaction system. It showed a close relationship with ACP content with a lower limit of detection of 0.037 mU/mL, making it suitable for sensing ACP and screening its inhibitor in human serum, providing a portable organic chromogenic substrate-based sensing platform.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Fan Li, Tianshuang He, Sihao Wu, Zoujun Peng, Ping Qiu, Xiaomin Tang
Summary: The study developed a novel uric acid detection method using chitosan stabilized gold nanoparticles, which showed high sensitivity and simplicity. The method was successfully applied to human serum and urine samples with high recovery rates, indicating its potential as an alternative for clinical medicine and daily monitoring.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Mengwen Li, Ao Shen, Yimin Hou, Xiaohui Hao, Man Du, Xiaoyu Du, Shufeng Ma, Jiaxin Yuan, Lala Hou, Yongwei Zhao, Ziqi Li, Yunxu Yang
Summary: This study presents a novel MOF-NADH-mediated colorimetric assay for highly sensitive detection of FA. The method is based on the biomimetic enzyme reductive reaction and the co-catalysis of metalloporphyrin with oxidized TMB, offering an excellent linear relationship within a broad range of FA concentrations and a low detection limit.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Jianping Guan, Meng Wang, Yu Xiong, Qi Liu, Xiaoqing Chen
Summary: In this study, a novel nanocomposite is developed for monitoring and determining uric acid (UA) in body fluids. The nanocomposite provides a ratiometric fluorescent, colorimetric, and photothermal signal output. The framework structure of the nanocomposite changes upon the addition of UA, leading to enhanced fluorescence emission, color change, and improved photothermal properties. The sensor exhibits low detection limits and has been successfully used for UA determination in urine, serum, and saliva.
Article
Chemistry, Analytical
Kader Can, Ziya Can, Aysem Uzer, Resat Apak
Summary: A colorimetric assay was developed to quantify nitroguanidine (NQ) by utilizing uric acid-modified gold nanoparticles (AuNPs@UA) that aggregate via intermolecular hydrogen bonding with NQ. The concentration-dependent color change of AuNPs@UA from red to purplish blue could be observed with the naked eye or measured using UV-vis spectrophotometry. The method exhibited a linear calibration curve in the range of 0.6-3.2 mg L-1 NQ, with a correlation coefficient of 0.9995. The detection limit of the assay was 0.063 mg L-1, surpassing previous noble metal aggregation methods. The proposed method was characterized using various techniques and optimized for key parameters. It demonstrated high selectivity for NQ, with negligible interference from common explosives, soil and groundwater ions, and potential interfering compounds. Furthermore, the developed spectrophotometric method was successfully applied to NQ-contaminated soil samples, yielding comparable results to liquid chromatography-tandem mass spectrometry.
Article
Electrochemistry
Soraya Hoefs, Deniz Huelague, Francesca Bennet, Peter Carl, Sabine Flemig, Thomas Schmid, Jorg A. Schenk, Vasile-Dan Hodoroaba, Rudolf J. Schneider
Summary: Electrochemical methods show promise for user-friendly on-site monitoring devices. The food industry aims to simplify analysis with smart technologies, such as photometric detection for sensitive analysis of mycotoxins. Research reveals the dependence of TMB electrochemistry on pH and electrode material, with gold electrodes providing stable response to TMB in acidic conditions. The creation of a smartphone-based, electrochemical immunomagnetic assay for ochratoxin A detection in real samples establishes a solid foundation for detecting additional analytes.
Article
Chemistry, Multidisciplinary
Asli Neslihan Avan, Sema Demirci-Cekic, Resat Apak
Summary: Immobilization of biological enzymes using magnetic nanoparticles as support materials enables cost reduction and reusability. In this study, three different oxidase enzymes were successfully immobilized on MNPs, and colorimetric nanobiosensors were developed for the determination of biologically important substrates. The immobilized enzymes showed no loss of affinity for the substrate, and the system exhibited wide linear concentration ranges and low detection limits, with the ability to be reused multiple times.
Article
Chemistry, Multidisciplinary
Zhikun Zhang, Wenmeng Zhao, Cuixia Hu, Yapeng Cao, Yumin Liu, Qingju Liu
Summary: A new method for colorimetric detection of L-histidine using Cu2+ ions was developed in this study. The assay can be used for quantitatively determining the concentration of L-His in samples and can be completed within 20 minutes.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Mehri Razavi, Alexandre Barras, Madjid Ifires, Abir Swaidan, Maryam Khoshkam, Sabine Szunerits, Mohsen Kompany-Zareh, Rabah Boukherroub
Summary: This work describes the preparation of ternary bismuth ferrite oxide nanoparticles (Bi2Fe4O9 NPs) with enzyme mimetic activity for the detection of dopamine. The Bi2Fe4O9 NPs exhibit good catalytic efficiency and are cost-effective and sensitive for the colorimetric detection of dopamine. The proposed colorimetric sensor holds great potential in biomedical analysis and diagnostic applications of dopamine-related diseases.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)