Article
Chemistry, Analytical
Xin Shang, Shaoying He, Zhiai Xu, Wei Lu, Wen Zhang
Summary: The novel hemin/phytic acid doped polyaniline (PA-PANI) hydrogel composite prepared through a simple chemical and self-assembly method showed good analytical performance for electrochemical detection of H2O2 released from living cells. The high sensitivity, selectivity and rapid response were attributed to the high conductivity and network structure of PA-PANI hydrogel, as well as its prevention of hemin self-dimerization. The biocompatibility of PA-PANI allowed living cells to adhere and facilitated a short diffusion distance between H2O2 released from cells and electrode.
Article
Chemistry, Physical
Yuying Jiang, Xiyuan Tong, E. Yifeng, Pengyan Wei, Fang Fang, Peng Chen, Kun Qian
Summary: Hydrogen peroxide (H2O2) is widely used in various fields, and a titanium dioxide-doped LTA zeolite has been developed as an electrochemical catalyst for H2O2 detection. The zeolite exhibits good adsorption and sensitivity, accurately measuring H2O2. The catalyst also has a wide detection range, stability, and repeatability, showing potential for environmental and biological sensing applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Yanwei Zhang, Hong Wang, Yaru Liu, Baolong Niu, Wenfeng Li
Summary: Accurate measurement of hydrogen peroxide is important for monitoring human diseases and environmental safety. Electrochemical sensors have become a research hotspot for this purpose. This article introduces the preparation of polyaniline hydrogel with a three-dimensional network structure by doping phytic acid and HCl. The characteristics and conductivity of the hydrogel were studied, and an electrochemical sensor based on the hydrogel was constructed, showing a good linear relationship and detection limit for hydrogen peroxide.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Biochemical Research Methods
Elizabeth M. M. Garcia, Paula A. A. Cordero, Sarah Kazemeini, Andrea Murillo-Soto, Karen A. A. Gonzalez, Alexander McClement, Cory A. A. Rusinek
Summary: This study investigates the detection of hydrogen peroxide on surface metal nanoparticle-modified boron-doped diamond electrodes. It is found that the palladium-modified electrode exhibits better response and lower detection limit compared to the platinum-modified electrode. The results demonstrate the potential of achieving sub-μM level hydrogen peroxide detection with non-enzymatic electrode materials.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Sarvajith Malali Sudhakara, Mruthyunjayachari Chattanahalli Devendrachari, Harish Makri Nimbegondi Kotresh, Fasiulla Khan
Summary: Cobalt phthalocyanines are known for their superior electrocatalytic properties in analyzing a wide range of organic, inorganic, and biomolecular samples. This study describes the synthesis of an electrocatalyst by covalently connecting tetra carboxy cobalt phthalocyanine with the conducting polyaniline for detecting bioactive H2O2. The synthesized molecule exhibits outstanding catalytic activity, possibly due to the synergistic effect between the macrocyclic phthalocyanine molecule and the conducting PANI.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Ying Guo, Rong Zhang, Shaoce Zhang, Hu Hong, Yuwei Zhao, Zhaodong Huang, Cuiping Han, Hongfei Li, Chunyi Zhi
Summary: In this study, a carbon quantum dot catalyst with a high oxygen content was reported. The catalyst exhibited excellent selectivity and production capacity for H2O2, as well as good stability. Experimental and theoretical investigations showed that the etheric groups in the catalyst were the most active sites for the 2eORR reaction.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xingzi Wu, Yujie Sun, Ting He, Yulin Zhang, Guo-Jun Zhang, Qiming Liu, Shaowei Chen
Summary: This study successfully dispersed iron atoms in nitrogen-doped porous carbon aerogel through a simple method, resulting in a dual-functional nanomaterial that can be used for fluorescence spectroscopy detection of glucose and as a catalyst for the electrochemical oxidation of glucose.
Article
Environmental Sciences
Jih-Hsing Chang, Shan-Yi Shen, Cheng-Di Dong, Mohd Shkir, Mohanraj Kumar
Summary: This study investigates various MoO3 morphologies prepared through different methods for detection of H2O2, finding that morphology significantly affects the properties of MoO3 nanostructures. The modified MoO3/Ni-F electrode shows good performance in electrochemical properties and detection applications.
Article
Polymer Science
Seo Jin Kim, Sung Tae Jang, Kyoung G. Lee, Bong Gill Choi
Summary: We developed a flexible polyaniline film with a one-dimensional nanopillar array to achieve high electrochemical performance of a pH sensor. The optimized conditions of electrodeposition resulted in highly ordered nanopillar arrays of polyaniline films. The electrode exhibited excellent electrochemical sensing performance, which remained stable even under a mechanically bent state.
Article
Chemistry, Multidisciplinary
Hui Fu, Nan Zhang, Feili Lai, Longsheng Zhang, Zhenzhong Wu, Hanjun Li, Haiyan Zhu, Tianxi Liu
Summary: A novel B-doped Ni-based catalyst with surface strain modulation is reported for high selective and productive two-electron ORR to produce H2O2. The catalyst exhibits excellent activity, stability, and Faraday efficiency, providing a new direction for the design of highly active and stable catalysts.
Article
Materials Science, Multidisciplinary
Amara Nasir, Sadia Khalid, Anca Mazare, Tariq Yasin
Summary: In this study, a metal-free conducting nanohybrid composite based on biopolymers was developed for non-enzymatic hydrogen peroxide detection. The composite consisted of crosslinked chitosan and polyaniline grafted graphene oxide. The sensor exhibited a low detection limit, a wide linear range, and high sensitivity.
MATERIALS RESEARCH BULLETIN
(2023)
Review
Chemistry, Analytical
Imane Boubezari, Ali Zazoua, Abdelhamid Errachid, Nicole Jaffrezic-Renault
Summary: Perovskite-modified electrodes have gained attention for their electrocatalytic properties in detecting bioactive molecules like hydrogen peroxide, glucose, and dopamine. The analytical performance of perovskites surpasses that of Ni and Co oxide-based sensors. Future challenges include expanding and enhancing the use of perovskite-based electrochemical sensors.
Article
Chemistry, Multidisciplinary
Jinzheng Liu, Xue Li, Lidi Cheng, Junwei Sun, Xiaomin Xia, Xiaoyan Zhang, Yanyan Song, Deshuai Sun, Jian Sun, Lixue Zhang
Summary: In this study, a facile Pt@Co/MoN sensing platform was fabricated by depositing Pt nanoparticles onto Co/MoN nanoarrays using atomic layer deposition (ALD) technology. The prepared Pt@Co/MoN exhibited excellent performance in the electrochemical detection of H2O2 due to its unique nanostructure and the strong interaction between Pt and the nitride support. This work provides an interesting strategy to fabricate low-Pt electrocatalysts on a nanoarray support for future applications in electroanalysis.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Fujia Zhao, Shan Zhou, Yingjie Zhang
Summary: A novel electrochemical sensor based on the topological insulator Bi2Te3 was reported, showing superior performance in hydrogen peroxide sensing with high sensitivity and low detection limit, surpassing traditional noble metal-based electrochemical sensors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Ganga Singh, Subhasis Das Adhikary, Debaprasad Mandal
Summary: The physico- and electrochemical behaviors of a series of [WZn3(H2O)(2)(ZnW9O34)(2)](12-) (Zn-WZn3) and its first-row transition-metal-substituted analogues [WZn-(TM)(2)(H2O)(2)(ZnW9O34)(2)](12-) (Zn-WZn-(TM)(2); TM = Mn-II, Co-II, Fe-III, Ni-II and Cu-II) were reported. The spectral patterns in all sandwich polyoxometalates (POMs) were similar, but the electronic properties highly depend on the transition metals at the sandwich core. The substitution of a series of first-row transition metals in Zn-based sandwich polyoxometalates resulted in the tuning of their electronic and optical properties, which correlated well with their molecular oxygen activation ability and their catalytic activity toward imine synthesis.
INORGANIC CHEMISTRY
(2023)
