Article
Chemistry, Analytical
Mbulelo Jokazi, Lekhetho S. Mpeta, Tebello Nyokong
Summary: MnTAPP was synthesized and attached to GQDs to improve electrocatalysis activity, with MnTAPP@GQDs showing the best catalytic rate constant and lowest limit of detection. The sensors also demonstrated good stability and selectivity in the presence of interfering analytes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yusong Tu, Pei Li, Jiajia Sun, Jie Jiang, Fangfang Dai, Chengzhang Li, Yuanyan Wu, Liang Chen, Guosheng Shi, Yanwen Tan, Haiping Fang
Summary: The functionalization of reduced graphene oxide (rGO) with copper ions significantly enhances antibacterial activity and minimizes toxicity to mammalian cells. Through cation-pi interaction, rGO forms a composite with copper ions at an extremely low concentration level, displaying selective antibacterial activity against bacterial cells.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Environmental Sciences
Govindan Rajivgandhi, R. T. V. Vimala, Raju Nandhakumar, Sevanan Murugan, Naiyf S. Alharbi, Shine Kadaikunnan, Jamal M. Khaled, Khalid F. Alanzi, Wen-Jun Li
Summary: This study investigated the removal of Ni ions from electroplating effluent using nanocomposites and found that the treated effluent was non-toxic and suitable for plant cultivation, providing an effective way to reduce heavy metal pollution in the environment.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Physical
Alekha Tyagi, Yaswanth K. Penke, Prerna Sinha, Iram Malik, Kamal K. Kar, Janakarajan Ramkumar, Hiroyuki Yokoi
Summary: The Al-substituted MnFe2O4-based ternary oxide and reduced graphene oxide (MAF-RGO) nanocomposite synthesized through in-situ co-precipitation and hydrothermal methods shows excellent ORR electrocatalytic performance in alkaline electrolyte. MAF-RGO demonstrates high ORR onset potential and good stability, indicating its potential as a high-performance ORR-active system.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Neha Saran, Tincy Lis Thomas, Purushothaman Bhavana
Summary: This work investigates the electrocatalytic reduction of carbon dioxide using polymerized Co-4-pyridylporphyrin in the presence of electrochemically reduced graphene oxide. The polymeric porphyrin was synthesized through a metalation process using the solvent system CHCl3-CH3OH. Electrocatalysts and comparison materials were synthesized by electrochemical or chemical reduction of graphene oxide with or without porphyrin. Characterization techniques including XPS, SEM, HR-TEM, Raman spectroscopy, and EIS were employed. Kinetic studies using a rotating disk electrode revealed a 4-electron reduction pathway under alkaline conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Mengjie Zhang, Jiaxin Cui, Tao Lu, Guosheng Tang, Shutian Wu, Wenjing Ma, Chaobo Huang
Summary: This study proposes an anti-corrosive nanofibrous membrane, prepared by combining a one-pot solvothermal reduction method and electrospinning technology to address water pollution issues. The membrane maintains performance under different environments, achieving high separation efficiency and flux. It is practical for various applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Bingqian Zhang, Peide Han, Jun Mei
Summary: Graphene-embedded metal matrix, especially nickel metal, has attracted much attention due to its mechanical enhancement effect. However, the weak interfaces in the graphene-nickel composite may lead to mechanical failure. In this study, structural modifications and ion substitutions were used to enhance the interface toughness. The evaluation of the properties of the graphene-nickel interface showed that chromium substitution for nickel matrix had the strongest adsorption capability towards boron-doped graphene. Furthermore, the effects of atomic arrangement and substitution concentrations on binding abilities were explored.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Fen Zhu, Xiao She, Zhanhui Zhang, Xianghua Yu, Jiayou Ji, Liang Li, Shaoping Li
Summary: In this study, flexible free-standing films with remarkable flexibility and excellent electrochemical properties were successfully prepared. These films can be used for fabricating portable and wearable supercapacitors and exhibit stable electrochemical performance even after multiple bending cycles, making them suitable for manufacturing wearable devices, portable electronics, and healthcare monitoring applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Chemistry, Physical
Yali Xu, Binbin Fan, Zheng Liu, Cong Huang, Aiping Hu, Qunli Tang, Shiying Zhang, Weina Deng, Xiaohua Chen
Summary: A redox-active engineered holey reduced graphene oxide film anode was prepared using carboxylic acid functionalized polystyrene spheres as a template, which greatly enhanced the electrochemical performance for potassium-ion batteries. The optimized film exhibited superior areal capacity and improved charge/discharge performance in KIBs.
Article
Energy & Fuels
Muhammad Kashif, Erdawaty Jafaar, Siti K. Sahari, Foo W. Low, Nguyen D. Hoa, Awais Ahmad, Anees Abbas, Zainab Ngaini, Muhammad Shafa, Ahsanulhaq Qurashi
Summary: Introducing a new organic compound K-Azo enhances the electrical and optical performance of graphene oxide and reduced graphene oxide nanostructured films. The presence of the organic sensitizer significantly improves the conductivity of the thin films, offering potential applications in photovoltaic solar cells. The long-range pi-electron delocalization in the organic sensitizer contributes to the improved conductivity of the graphene oxide and reduced graphene oxide films.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Xinyu Zhu, Yang Li, Xuan Tian, Runde Wang, Shanshan Wang, Huining Wang, Jiemei Yu, Taizhong Huang
Summary: This paper reports the successful synthesis of reduced graphene oxide (rGO) supported iron boride (Fe2B/rGO) catalysts by a facile reduction method, and comprehensive characterization by various techniques. The Fe2B embedded in rGO acts as a coordination atom to regulate the electronic structure of the catalysts, resulting in improved catalytic performance towards oxygen reduction reaction (ORR) with a peak current intensity surpassing Pt/C (20 wt%) catalyst. The Fe2B/rGO catalyst also exhibits excellent stability and 4-electron pathway for ORR, showing great potential for developing high-performance transition metal boride based catalysts for ORR.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Electrical & Electronic
Madia Sahar, Zohra Nazir Kayani, Maryam Anwar, Amna Hassan, Saira Riaz, Shahzad Naseem
Summary: In this research, undoped and Fe-doped Bi2O4 thin films were synthesized using the sol-gel dip coating technique. The results showed the formation of monoclinic phase Bi2O4 without any impurities. Functional bonds of bismuth oxide were confirmed through Fourier transform infrared spectroscopy. The bandgaps of the films ranged from 2.0 to 1.80 eV, making them suitable for use as window layers in solar cells. The inclusion of iron dopants enhanced the dielectric properties and exhibited ferromagnetic behavior. Additionally, Fe-doped Bi2O4 showed effective antibacterial activity and superior photocatalytic performance compared to undoped Bi2O4.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Review
Chemistry, Physical
Xinyue Li, Tianrui Cui, Xin Li, Houfang Liu, Ding Li, Jinming Jian, Zhen Li, Yi Yang, Tianling Ren
Summary: With the rapid development of medical technology and increasing demands for healthcare monitoring, wearable temperature sensors based on reduced graphene oxide (rGO) have attracted widespread attention. This is due to their portability, flexibility, and ability to conduct real-time and continuous signal detection. The exceptional thermal conductivity and sensitive resistance changes of rGO make it an ideal material for temperature sensors. This paper reviews the state-of-the-art advances in rGO-based wearable temperature sensors, including their sensing mechanisms, structure designs, functional material additions, manufacturing processes, and performances.
Article
Nanoscience & Nanotechnology
Maricruz G. Saborio, Karen Privat, Bich Ngoc Tran, Per B. Zetterlund, Vipul Agarwal, Francesc Estrany
Summary: In this work, an asymmetric pseudocapacitor with P(nBA-stat-BzMA)/reduced graphene oxide (rGO) nanocomposite electrodes incorporating lignosulfonate (LS) was synthesized and characterized. The LS not only acts as a binder but also contributes to the improvement of electrochemical performance. The optimized assembly of unit cells showed high capacitance, power, and energy, with minimal loss of electroactivity after 1000 charge-discharge cycles.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Yiwen Hua, Chao Liu, Yanjun Tang
Summary: The development of sustainable high-performance materials based on nanocellulose has received great attention. In this study, nanocellulose-based composite films with highly conductive and antibacterial properties were developed by adding reduced graphene oxide (rGO)/silver nanoparticles (AgNPs) to cellulose nanofiber films through a vacuum filtration process. The reduction effect of gallic acid on the chemical structure and electrical conductivity of the composites was investigated. The prepared composite film with a specific ratio of rGO/AgNPs to cellulose nanofibers showed superior tensile strength and electrical conductivity, as well as strong antibacterial effects against Escherichia coli and Staphylococcus aureus.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
