Article
Chemistry, Analytical
Hong Han, Chang Liu, Jingquan Sha, Yu Wang, Chunyao Dong, Mingjun Li, Tiying Jiao
Summary: The ternary nanocomposite of Fc-based carbon nanomaterials with PMo12 is identified as a promising electrochemical sensor for acetaminophen detection, showing low detection limit and wide range of detection capability.
Article
Chemistry, Physical
Mazdak Hashempour, Mariangela Longhi, Luigi Brambilla, Antonello Vicenzo
Summary: This study reports on the formation of reduced graphene oxide/chitosan hybrids via L -ascorbic acid reduction and provides a detailed characterization of the hybrids. The study shows that the hybrids exhibit improved electrochemical performance and packing behavior compared to pure reduced graphene oxide.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Mahsa Gharani, Ali Bahari, Shahram Ghasemi
Summary: In this study, a MoS2/rGO/Au nanohybrid was synthesized via a one-step hydrothermal method and used to fabricate a modified electrode for detecting hydrazine. The results demonstrated that the MSRG/Au nanohybrid exhibited higher electrocatalytic activity towards HY oxidation with less overpotential compared to other electrodes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Biophysics
J. L. Aparicio-Collado, N. Garcia-San-Martin, J. Molina-Mateo, C. Torregrosa Cabanilles, V Donderis Quiles, A. Serrano-Aroca, R. Sabater i Serra
Summary: This study reports the development of a new type of semi-interpenetrated polymer network using sodium alginate, polycaprolactone, and rGO nanosheets for biomedical applications. The resulting electroactive nanohybrid hydrogels exhibit excellent electrical conductivity and biocompatibility, making them promising for skeletal muscle tissue engineering.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Naili Guo, Yifan Cui, Siyu Su, Liuqin Lai, Liang Zhang, Xiaohong Zhu
Summary: The study found that RGO is relatively stable in X-ray diffraction and Raman activity, but detectable changes were observed in electron microscopy characterizations. With the increase of preservation time, the specific capacitance of RGO samples remains stable, but there is a significant decrease in electrical conductivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Swapan Das, Sunipa Roy, Tara Shankar Bhattacharya, Chandan Kumar Sarkar
Summary: A highly sensitive hydrogen gas sensor based on reduced graphene oxide and zinc oxide nanoparticles has been developed in this work, showing promising performance at room temperature and potential for practical applications. The study also includes detailed morphological and structural analysis for comparison, as well as a discussion on the physics behind the room temperature sensing.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Wenbo Li, Hao Li, Rong Qian, Shangjun Zhuo, Pengfei Ju, Qiao Chen
Summary: A new NO2 nanohybrid gas sensor was constructed using 3D molybdenum disulfide (MoS2) and reduced graphene oxide (rGO), assisted by hexadecyl trimethyl ammonium bromide (CTAB), for sensitive room-temperature detection of NO2. The sensor exhibited a high response rate, remarkable selectivity, low detection limit, and long-term stability.
Article
Chemistry, Physical
Meryem Samanci, Ayse Bayrakceken Yurtcan
Summary: Reduced graphene oxide (RGO) has been synthesized as carbon sourced catalyst support materials for Polymer Electrolyte Membrane (PEM) fuel cells. Pt catalysts were synthesized using supercritical carbon dioxide deposition technique over the synthesized support materials. The structures of thermally and chemically reduced graphene oxide supports and their Pt catalysts were investigated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Ramy Sadek, Mohammad S. Sharawi, Charles Dubois, Hesham Tantawy, Jamal Chaouki
Summary: The study presents a cost-effective and scalable method for industrial production of Reduced Graphene Oxide (RGO) by combining chemical reduction and thermal treatment. The RGO produced has high electromagnetic interference (EMI) shielding performance, surpassing other graphene reduction mechanisms.
Article
Chemistry, Physical
Punam Tiwary, S. G. Chatterjee, S. S. Singha, Rajat Mahapatra, Amit K. Chakraborty
Summary: A low-cost sensor using chemically reduced graphene oxide thin film was synthesized and fabricated to detect ethanol with high sensitivity at room temperature. The sensor exhibited good selectivity to ethanol, fast response and recovery times, and repeatability. Co-exposure to standard humid air did not affect the sensor's response to ethanol, showing its suitability for practical applications.
Article
Biochemistry & Molecular Biology
Upasana Gupta, Natish Kumar, Akash Lata, Preeti Singh, Ravi Kumar Arun
Summary: In this study, researchers have developed a spiral-shaped microfluidic device with a modified nanohybrid membrane for efficient filtration of urea. This device mimics the main features of the kidney and has the potential for organ-on-a-chips applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Yanyan Shao, Zhongti Sun, Zhengnan Tian, Shuo Li, Guiqing Wu, Menglei Wang, Xiaoling Tong, Fei Shen, Zhou Xia, Vincent Tung, Jingyu Sun, Yuanlong Shao
Summary: Functionalizing carbon cathode surfaces with oxygen functional groups is an effective approach to improve the properties of aqueous Zn-ion hybrid capacitors. By regulating the oxygen functional groups, the redox activity and Zn-ion storage capability of the cathode can be significantly enhanced, leading to improved electrochemical performance beyond traditional electrolyte systems. The use of hydrogen peroxide assisted hydrothermal reduction for producing rGO cathodes shows promising results in terms of specific capacitance and energy density.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Qian Wang, Yuzhe Wang, Guiyong Xiao, Xinde Zhu
Summary: In this study, Co3O4 particles/reduced graphene oxide (Co3O4/rGO) composites were successfully fabricated on Indium tin oxide (ITO) slide through electrophoretic deposition and annealing process. The deposition time and precursor ratio were optimized. Structural characterization and chemical composition analysis confirmed the successful loading of Co3O4 particles on graphene sheets. The Co3O4/rGO composite exhibited excellent electrocatalytic activity as a non-enzymatic H2O2 sensor, with a wide linear range and high sensitivity. Good anti-interference ability, reproducibility, and long-term stability were also observed. The application of Co3O4/rGO in human urine sample analysis showed promising results, indicating its potential in physiological and medical applications.
Article
Chemistry, Inorganic & Nuclear
A. G. Anitha, S. Rizwana Begum, N. Chidhambaram, Arun Thirumurugan, R. Meenakshi
Summary: Nanohybrids with less toxicity and excellent antibacterial activity, such as zinc oxide@graphene oxide (ZnO@GO), have been investigated in this study. The ZnO@GO nanohybrid was fabricated using the co-precipitation method, resulting in a homogeneous dispersion of ZnO particles on graphene oxide. The antibacterial efficacy of ZnO@GO was found to be higher than that of ZnO, indicating the potential of nanohybrids for developing effective bactericidal agents.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Medicine, Research & Experimental
Shimaa Nabih, Shaymaa Sherif Hassn
Summary: The composite material of reduced graphene oxide embedded with gold and silver nanoparticles shows stronger anticancer effects and higher drug stability against drug-sensitive breast cancer cells. Synthesized using wet chemistry, the nanocomposite has the potential for medical applications and promising future prospects.
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)