Article
Chemistry, Analytical
De-Rui Kong, Yu-Ying Xin, Bo Li, Xian-Fa Zhang, Zhao-Peng Deng, Shan Gao
Summary: Spinel CuCr2O4 nanocrystals with multiple mixed valence states were synthesized through a sol-gel technique and modified on a glassy carbon electrode (GCE). The modified electrode achieved high response to nM-level H2O2, exhibiting large sensitivity and low detection limit. The electrode also accurately detected traces of H2O2 in milk whey, mouthwash, and disinfectant solutions, showing potential applications in related fields.
MICROCHEMICAL JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Qian Che, Qian Zhao, Mingjun Hu, Ruzhan Qin, Guangcun Shan, Jun Yang
Summary: This paper proposes a flexible and robust laser ablation method combined with a two-step film transfer process for the fabrication of stretchable silver nanowire (AgNW)based conductive patterns. The three critical steps include scalable synthesis of high-quality AgNWs, reliable film transfer to ensure complete replication of the AgNW film properties, and digital laser ablation for selective removal of the AgNW layer. The fabricated stretchable transparent conductive electrodes, circuits, and functional patterns demonstrate good and reliable performance under various deformations, showing the feasibility of this method for various stretchable conductive patterns.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Analytical
Bo Li, Xue-Ting Wang, Li-Hong Liu, Xian-Fa Zhang, Yuan Gao, Zhao-Peng Deng, Li-Hua Huo, Shan Gao
Summary: Coral-like Ag-Mo2C/C-I and blocky Ag-Mo2C/C-II composites were obtained through one-step in situ calcination, showing different detection performances in electrochemical sensors with the former exhibiting faster response, higher sensitivity, and lower detection limit. This is attributed to the significant influence of different calcining atmospheres on the microstructure and electrochemical properties of the composites.
Article
Chemistry, Physical
Dan-Liang Wen, Peng Huang, Bo-Yuan Li, Yu Qiu, Yi-Lin Wang, Xin-Ran Zhang, Hai-Tao Deng, Xiao-Sheng Zhang
Summary: The article introduces a flexible multifunctional sensor based on a silk fibroin/silver nanowire composite film, which can perform pressure and temperature sensing, as well as finger proximity detection and human breathing monitoring. A self-powered wireless multi-sensing microsystem is also constructed using the sensor, enabling continuous self-powered work and real-time data transmission to a mobile phone. These features make it highly valuable in the field of smart IoT.
Article
Chemistry, Analytical
Tanji Yin, Hemin Wang, Jinghui Li, Baiqing Yuan, Wei Qin
Summary: This study presents an amperometric signal readout strategy based on H2O2 for ISEs, which provides satisfactory slope sensitivity and detection limit compared to potentiometric responses. The method is applicable for sensitive and selective detection of cations and anions.
Article
Chemistry, Physical
Kai Zhang, Hong-Yan Zeng, Ming-Xin Wang, Zhen Li
Summary: This study developed a novel strategy to prepare a non-enzymatic H2O2 sensor using Ag nanoparticles. The LDH/PPy-Ag electrode material exhibited high stability and excellent electrocatalytic activity for H2O2 reduction. The sensor showed excellent sensing performance towards H2O2, with a wide linear range, high sensitivity, low detection limit, and good stability.
Article
Electrochemistry
Eda Kiymaz Onat, Melike Bilgi Kamac, Merve Yilmaz
Summary: In this study, non-enzymatic dual sensors based on a dual screen-printed carbon electrode (DSPCE) modified with reduced graphene oxide (RGO), polyneutral red (PNR), and gold nanoparticles (AuNP) were developed for the simultaneous amperometric determination of NADH and H2O2. The dual sensors exhibited fast, high repeatability and sensitivity, as well as a low limit of detection for both analytes. The application stability of the dual sensor was tested for 45 days, and it showed high recoveries in the simultaneous determination of NADH and H2O2 in blood serum. The disposable dual sensors have potential applications in point-of-care tests.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Abdul Kader Mohiuddin, Seungwon Jeon
Summary: In this study, a nonenzymatic electrochemical sensor was synthesized for the sensitive detection of H2O2 using Ag doped 8-MnO2 nanorods supported graphene nanocomposite. The sensor demonstrated excellent catalytic activity and high sensitivity.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xixi Zhu, Peng Song, Shutong Hou, Hui Zhao, Yan Gao, Tao Wu, Qingyun Liu
Summary: In this study, Ag nanoparticles modified Fe3O4 anchored on roughened halloysite nanotubes (Ag@Fe3O4/RHNT) was successfully synthesized, and an efficient colorimetric sensing platform for H2O2 detection was established. The Ag-Fe3O4 RNHTs showed satisfactory catalytic activity in the presence of H2O2, resulting in a color change from colorless to blue. The detection limit for H2O2 was determined to be 0.7 μM. Overall, this study provides a reliable and sensitive method for H2O2 detection in milk and serum.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Analytical
Shiying Zhou, Liuyi Jiang, Jiajin Zhang, Peng Zhao, Mei Yang, Danqun Huo, Xiaogang Luo, Caihong Shen, Changjun Hou
Summary: A novel electrochemical sensor based on Cu-hemin MOFs/3D-RGO was constructed for detecting H2O2 released from living cells, showing excellent performance with wide linear range, high sensitivity, and rapid response time. The self-supported sensing electrode has great potential in monitoring cancer cells' pathological and physiological dynamics.
Article
Engineering, Environmental
Kempahanumakkagaari Suresh Kumar, Thippeswamy Ramakrishnappa
Summary: The green ecofriendly approach of synthesizing silver nanoparticles (AgNPs) using apple juice has been proven effective for detecting Hg2+ and H2O2, showing remarkable colorimetric and spectral changes with high sensitivity. The method also demonstrated excellent recovery rates in spiked water samples.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Md. Ashraful Kader, Nina Suhaity Azmi, A. K. M. Kafi, Md. Sanower Hossain, Mohd Faizulnazrie Bin Masri, Aizi Nor Mazila Ramli, Ching Siang Tan
Summary: The challenges of using a heme protein and enzyme-based H2O2 sensor were overcome by developing a highly sensitive and practical amperometric gold nanoparticles (Au NPs)/SnO2 nanofibers (SnO2 NFs) composite sensor. The composite consisted of multiporous SnO2 NFs and Au NPs, which were coated on a glassy carbon electrode (GCE). The sensor demonstrated rapid amperometric behavior within 6.5 s and exhibited high sensitivity, selectivity, reproducibility, repeatability, and stability. It also showed accurate and sensitive detection of H2O2 in various samples including tap water, apple juice, and bacterial cultures.
Article
Materials Science, Multidisciplinary
Huelya Ozturk Dogan, Omer Faruk Albayrak
Summary: In this study, a CuBi2O4/rGO nano composite was designed and synthesized by simultaneous electrochemical deposition of GO and CuBi2O4. The nanocomposite surface was electochemically functionalized with Ag nanoparticles. The prepared Ag@CuBi2O4/rGO electrode demonstrated higher faradaic current than CuBi2O4/rGO and PGE, along with high selectivity, low nitrite oxidation potential, and low detection limit.
Article
Materials Science, Multidisciplinary
Patricia G. Lopez-Cardenas, Emmanuel Alcala, Juan Diego Sanchez-Torres, Elsie Araujo
Summary: In this paper, a data-driven approach using response surface methodology (RSM) is introduced for optimizing the design of highly sensitive hydrogen peroxide (H2O2) sensors based on self-supported nickel nanowire (Ni NW) arrays. The goal is to enhance sensor performance by customizing the length of Ni NW and optimizing the working conditions. The optimized sensor achieves a significant improvement compared to previous nanostructured sensors and standard planar sensors, highlighting the potential of RSM as a powerful tool for optimizing nanostructured sensors and accelerating the design-build-test cycle. The optimized H2O2 sensor can be applied in various fields, including the food industry, medical diagnostics, and environmental monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Wei Yan, Hong-Yan Zeng, Kai Zhang, Kai-Min Zou
Summary: The NiAlO@PPy-Ag sensing material, synthesized by in-situ oxidative polymerization of pyrrole monomer on NiAl-oxide and anchoring Ag nanoparticles on the carrier, demonstrated homogeneous distribution of Ag NPs on NiAlO@PPy and encapsulation of NiAlO particles by PPy chains. The resulting NiAlO@PPy-Ag showed high sensitivity and selectivity towards H2O2, with a low detection limit of 0.03 μmol·L-1 and a high sensitivity of 346.50 μA·mmol(-1)·cm(-2), as well as excellent repeatability and reproducibility. These results highlight the potential of NiAlO@PPy-Ag as an electrocatalytic material for H2O2 detection in biological, clinical, and environmental applications.
