ENERGY
·
2025
·
IF 9.4
Fenhong Song,Jiaming Ma,Gang Wang,Ruibo Zhang,Jiawen Li,Jing Fan
Supercapacitors are essential to future energy systems, enabling efficient energy storage and management. Transition metal oxides are pivotal in advancing supercapacitor performance due to their redox activity and conductivity. Here, we synthesize a multi-element transition metal oxide composite (NiO-(NiFeCo)O) via a one-step hydrothermal method, forming self-assembled 3D rough nanorod networks. This architecture enhances ion transport, provides abundant active sites, and delivers a specific capacitance of 1414.54 F g −1 at 1 A g −1 , with 98.35 % capacitance retention after 3000 cycles. We further developed an asymmetric supercapacitor (ASC) using NiO-(NiFeCo)O as the positive electrode and rGO self-assembled on SiO 2 as the negative electrode. The ASC achieved a remarkable energy density of 66.0 Wh·kg −1 at 800 W kg −1 , alongside 88.46 % capacitance retention after 11,000 cycles. This design balances high energy/power density with exceptional stability, addressing critical challenges in next-generation energy storage. Our findings highlight the potential of NiO-(NiFeCo)O//SiO 2 /rGO ASCs for scalable, sustainable applications in advanced energy systems.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jingwen Yang,Chaochao Cao,Jiaxiao Qiao,Wei Qiao,Bo Jiang,Chengchun Tang,Yanming Xue
Lithium-sulfur (Li-S) battery with high theoretical specific capacity (1675 mAh/g), has been deemed as one of the most potential candidates of secondary energy storage system. However, the large-scale applications of Li-S batteries have been obstructed by internally sluggish multi-step redox reaction and terrible shuttle effect of lithium polysulfides (LiPSs). Herein, boron nitride nanosheets/reduced graphene oxide (BNNSs/rGO) heterostructure prepared by self-assembly crosslinking method has been designed to modify commercial separator for Li-S batteries. The hierarchical pores, physical and chemical cross-links within heterostructure can significantly enhance the adsorption capacity for LiPSs, uniquely physical and electronic interaction between BNNSs and rGO can effectively catalyze the conversion of sulfurated species. Benefiting from the synergistic adsorption-catalysis effect, BNNSs/rGO not only greatly inhibits the shuttle behaviors, but also considerably accelerates the electrochemical reaction kinetics for LiPSs and Li 2 S. Attributed to these merits, Li-S battery with BNNSs/rGO heterostructure mediator delivers superiorly reversible capacity as high as 915.0 mAh/g at 1 C. Even at high sulfur loading of 3.9 mg cm −2 , the cell delivers ultra-stable specific capacity of 629.1 mAh/g at 1 C, and still maintains 605.5 mAh/g over 500 cycles corresponding to a capacity fade of merely 0.0075% per cycle.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 11
·15251-15264
·
IF 2.478
Xu Ying-Ge,Liu Jian,Kong Ling-Bin
Sodium-ion hybrid capacitors (SICs) as promising energy conversion and storage devices have exhibited excellent specific energy, high specific power, and good cycling life. Nevertheless, anode materials for SICs suffer from terrible volume expansion and sluggish reaction kinetics owing to the larger radius of sodium-ion. To find suitable anode materials, we design and prepare reduced graphene oxide-supported CoS 2 nanoparticles (CoS 2 /rGO) with high electrochemical performance through a facile hydrothermal method. When tested as anode materials, the specific capacity of CoS 2 /rGO delivers 529.3 and 1168.6 mA h g −1 in the process of the 1st charge and discharge, respectively. Moreover, the specific capacity retention is up to 214.8 mA h g −1 at 100 mA g −1 over 100 cycles. In order to explore the practical application of CoS 2 /rGO, SICs are assembled by biomass-derived porous carbon cathodes and CoS 2 /rGO anodes, which displays remarkable specific energy of 112.6, 103.75, 91.29, 70.34, 47.45 W h kg −1 under specific power 225, 449.82, 899.86, 1350, 2689.3 W kg −1 , respectively, benefiting from the high pseudocapacitive performance of CoS 2 /rGO anodes and outstanding specific capacity of biomass-derived porous carbon cathodes.
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BIOSENSORS & BIOELECTRONICS
·
2018
·
IF 8.173
Chen Zhou,Haimin Zou,Ming Li,Chengjun Sun,Dongxia Ren,Yongxin Li
A fiber optic surface plasmon resonance (FOSPR) sensor was developed for detection of Escherichia coli O157:H7 ( E. coli O157:H7) in water and juice, based on antimicrobial peptides (AMP), Magainin I, as recognition elements and silver nanoparticles-reduced graphene oxide (AgNPs-rGO) nanocomposites assisted signal amplification . The uniform AgNPs-rGO was fixed on the surface of optical fiber and covered with gold film. Not only was the SPR response greatly enhanced, but also the AgNPs was prevented from being oxidized. The FOSPR showed a sensitivity of about 1.5 times higher than that fabricated only with gold film. In the assay, Magainin I, immobilized on the surface of gold film, could specifically capture E. coli O157:H7, resulting in the wavelength shift of the SPR absorption peak. Under the optimized conditions, the SPR resonance wavelength exhibited a good linear relationship with natural logarithm of the target bacteria concentration in the range of 1.0 × 10 3 to 5.0 × 10 7 cfu/mL with the detection limit of 5.0 × 10 2 cfu/mL (S/N = 3). The FOSPR sensor showed good specificity for E. coli O157:H7 detection compared to other bacteria similar to the target bacterial species . Furthermore, the FOSPR sensor was successfully applied to the detection of E. coli O157:H7 in water, fruit and vegetable juice with the satisfactory recoveries of 88–110%. This assay for E. coli O157:H7 detection possesses high sensitivity, good selectivity , reproducibility and stability. In addition, the AMP based SPR biosensing methodology could be extended to detect a wide variety of foodborne pathogens. Therefore, the versatile method might become a potential alternative tool in food analysis and early clinical diagnosis.
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APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Wei Li,Fei Wang,Xiao-shan Chu,Xiao-yun Liu,Yan-yan Dang
Water splitting by photocatalysis technique is regarded as an eco-friendly hydrogen production strategy. However, the poor photoresponsivity and automatic electron-hole recombination greatly restrict the HER performance of conventional semiconductor photocatalyst. Here, to utilize the stable electrochemical property of hexagonal phase boron nitride (h-BN) and improve its defect of wide bandgap ( E g ≈ 4.2 eV), reduced graphene oxide (rGO) was applied to construct three-dimensional (3D) porous h-BN/rGO hybrid accompanied by a carbon-doping strategy without template assistance, then a carbon-doped 3D porous h-BN/rGO (C-BNRG) hybrid with large BET surface area was successfully prepared. As the synergistic effect of h-BN/rGO heterointerface and carbon-doping, the improved photoresponsivity and electrochemical property were presented, and the resultant 3D porous C 0.4 -BNRG hybrid presented not only greatly enhanced HER activity (157.63 μmol·g −1 ·h −1 ) but excellent durability in pH = 8.5, which was prominently higher than pristine h-BN (～36.7 times), C-BN (～12.1 times) and 3D porous BNRG hybrid (～7.0 times). This study offers a template-free approach to develop non-metallic based 3D porous hybrid for outstanding HER performance.
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MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Huisi Yang,Juan Zhou,Jing Bao,Yi Ma,Jun Zhou,Caihong Shen,Huibo Luo,Mei Yang,Changjun Hou,Danqun Huo
Hydrogen peroxide (H 2 O 2 ) is an important intermediate in biological and environmental systems, which is widely used in pharmaceutical, environmental protection, fuel cell and other fields. It is also the most important signal conducting molecule, second messenger and growth factor in Reactive Oxygen Species (ROS). The increase of intracellular H 2 O 2 level is closely related to cancer and neurodegenerative diseases. Therefore, the detection of H 2 O 2 is an important goal of clinical research. Herein, we synthesized molybdenum disulfide (MoS 2 ) with a lattice spacing of 0.62 nm using a simple method, maintaining the excellent characteristics of MoS 2 itself, and performing sensitive detection of H 2 O 2 . In this work, we use graphene oxide as the precursor, and use one-step hydrothermal method to synthesize three-dimensional molybdenum disulfide/reduced graphene oxide composite (MoS 2 /rGO). Graphene not only provides a support structure for the growth of MoS 2 , but also forms large number of pores in it. These channels greatly increase the specific surface area of the MoS 2 /rGO composite and provide a sufficient reaction environment for the reaction of H 2 O 2 on the composite. Its greatly improves the sensitivity of the MoS 2 /rGO enzyme-free sensor. We have calculated that the enzyme-free sensor composed of this electrode has a good linear dependence on the H 2 O 2 concentration in the range of 2 μM to 23.18 mM, and the detection limit is 0.19 μM. The enzyme-free sensor with simple preparation method is expected to be greatly developed in the clinical application of hydrogen peroxide sensor.
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Biosensors-Basel
·
2025
·Vol. 15
·期 2
·122
·
IF 5.6
Lei Fan,Zhaoxin Wang,Tao Yang,Qiang Zhao,Zhixin Wu,Yijie Wang,Xue Qi,Lei Zhang
Flexible pressure sensors have drawn growing attention in areas like human physiological signal monitoring and human–computer interaction. Nevertheless, it still remains a significant challenge to guarantee their long-term stability while attaining a wide detection range, a minute pressure testing limit, and high sensitivity. Inspired by the wrinkles on animal skins, this paper introduces a flexible pressure sensor with wrinkled microstructures. This sensor is composed of a composite of reduced graphene oxide (rGO), single-walled carbon nanotubes (SWCNTs), and polydimethylsiloxane (PDMS). After optimizing the proportion of the composite materials, the flexible pressure sensor was manufactured using highly efficient heat-shrinkable films. It has a sensitivity as high as 15.364 kPa−1. Owing to the wrinkled microstructures, the sensor can achieve an ultra-wide pressure detection range, with the maximum reaching 1150 kPa, and is capable of detecting water wave vibrations at the minimum level. Moreover, the wrinkled microstructures were locked by PDMS. The sensor acquired waterproof performance and its mechanical stability was enhanced. Even after 18,000 cycles of repeated loading and unloading, its performance remained unchanged. By combining with an artificial neural network, high-precision recognition of different sounds and postures when grasping different objects was realized, with the accuracies reaching 98.3333% and 99.1111%, respectively. Through the integration of flexible WIFI, real-time wireless transmission of sensing data was made possible. In general, the studied sensor can facilitate the application of flexible pressure sensors in fields such as drowning monitoring, remote traditional Chinese medicine, and intelligent voice.
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PubMed
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2024
·
IF 2.7
Qiao Xinxin,Bian Ruihan,Li Shu,Zhu Jialei,Wang Fuqin,Liu Chang
In the paper, a high-performance electrode was reported for the determination of uric acid (UA) and dopamine (DA) by loading nanocomposites Fe 2 O 3 /poly-neutral red (PNR)/partially reduced graphene oxide (rGO) on glassy carbon electrode (GCE). The nanocomposites Fe 2 O 3 /PNR/rGO were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), and electrochemical impedance spectroscopy (EIS). Under the optimized condition, the peak currents of UA and DA showed good linear relationships with their concentrations in the range of 1 × 10 –6 to 1 × 10 –3 mol L −1 and 3 × 10 –7 to 9 × 10 –5 mol L −1 , respectively. The recovery rates were 93.0–102.0% and 99.2–104.6% for detecting DA from medical injections and human specimens, including urine and serum, respectively, 95.5–105.0% for UA from urine and serum samples. Obviously, this Fe 2 O 3 /PNR/rGO/GCE is expected to be used in production quality control and clinical test. Graphical abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Baoxia Xue,Ziyang Shao,Jing Liu,Yong Liu,Mei Niu,Yongzhen Yang,Li Zhang
Aerogel dressings aid wound healing with exudate management. Although burn wound dressings have advanced, creating a low-cost option with exudate-absorbing, antimicrobial, hemostatic, and pro-healing properties remain vital. To achieve the anti-biofilm, hemostatic and anti-inflammatory with multiple effects, a multi-functional reduced graphene oxide/polydopamine/silver/cotton gauze (rGO/PDA/Ag/COT) dressing was designed by integrating the rGO/PDA/Ag aerogel with cotton gauze (COT) under the force of the C N bond. The dressing exhibited excellent biosafety (hemolysis rate < 5 %, cell viability >85 % on HUVEC cells), inhibited biofilms of E. coli and S. aureus by 98.66 % and 98.13 %, respectively (at 18 mg/mL extract), reduced hemostasis time by 25 % (322 ± 3.5 s vs. 427.5 ± 10.6 s for COT), and achieved a 91.93 ± 1.97 % wound closure rate in a rat deep second-degree burn model after 14 days. Because of antioxidant properties of PDA, the dressing effectively inhibited the production of inflammatory cells, upregulated TGF-β1 to promote VEGF expression, and enhanced the activity of VEGF and bFGF to stimulate endothelial cell and capillary formation in the burns healing. Given its numerous advantages, the rGO/PDA/Ag/COT dressing shows great potential for application in wound management and therapy.
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PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Al Kiey Sherief A.,Baseer Rasha A.,Kamel Samir
The simultaneous detection of ascorbic acid (AA), dopamine (DA), and uric acid (UA) is crucial for biomedical and clinical diagnostics. Herein, we present a highly sensitive and selective electrochemical sensor based on a modified glassy carbon electrode (GCE) functionalized with hydroxypropyl methylcellulose (HPMC), polyvinylpyrrolidone (PVP), and 3D reduced graphene oxide/pentaerythritol (3D rGO/PE). The structural and morphological properties of the composite were characterized using Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Electrochemical analysis demonstrated the remarkable electrocatalytic activity of 3D rGO/PE/PVP@HPMC/GCE for the oxidation of AA, DA, and UA, with peak potential separations of 214, 133, and 346 mV for DA-AA, DA-UA, and UA-AA, respectively. Under optimized conditions, the sensor exhibited wide linear detection ranges of 4.0 µM to 1.0 mM (AA), 0.2–100 µM (DA), and 1.0–100 µM (UA), with detection limits of 0.82, 0.002, and 0.025 M, respectively. The sensor demonstrated excellent sensitivity, selectivity, reproducibility, and stability, making it a promising platform for real-sample analysis.
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高影响因子
ACS Omega
·
2025
·
IF 4.3
Haijun Huang,Yili Li,An Liu,Ranxin Gui,Qin Shu,Bao Yu,Chuan Jing,Weiguo Cao
Polycyclic aromatic hydrocarbons (PAHs) are high-risk, persistent organic pollutants that exhibit carcinogenic, teratogenic, and mutagenic effects. These compounds readily form and accumulate during cultivation, processing, and storage of herbal medicines. Therefore, it is significant for enhancing the quality control of herbal medicine by developing effective determination methods. In this study, a composite material was synthesized based on layered double hydroxide-derived carbon (LDC) and silver nanoparticle-doped reduced graphene oxide (rGO@AgNPs). The composite has been successfully applied in the simultaneous electrochemical sensing of benzo[a]pyrene (BaP) and phenanthrene (PHE). The morphological and structural properties of the material were characterized by using field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) techniques. The LDC-rGO@AgNP-based sensor demonstrated exceptional performance in 0.1 M Mg(ClO4)2/acetonitrile aqueous solution, exhibiting wide linear ranges (2–256 μM for both analytes), low detection limits (0.72 μM for BaP and 0.82 μM for PHE), significant anti-interference capability against common interferents, along with good reproducibility and stability. The practical applicability of this sensor was demonstrated through the standard addition method in Coptis chinensis samples, thereby establishing an electrochemical sensing platform for robust monitoring of PAH contaminants in herbal medicines.
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高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xishun Peng,Yiheng Yuan,Anjiang Lu,Cunwei Wang,Caizhen Zu,Haili Zhang,Zhongchen Bai
Glyphosate (Gly) residues in agricultural products have a serious health risk, so it is urgent to seek a sensitive and convenient method for recognizing Gly residues in food. In this study, we proposed an electrochemical surface-enhanced Raman spectroscopy (EC-SERS) sensor of polyaniline/reduced graphene oxide/Ag/Cu (PANI/RGO/Ag/Cu) film to detect Gly residues. The EC-SERS sensor of PANI/RGO/Ag/Cu film had a large specific surface area, which could increase the binding sites of cu 2+ /Gly clathrates for boosting specifically its SERS signal. Moreover, Ag/Cu nanoparticles on the surface of film could effectively increase the differential pulse voltammetry signal and SERS signal of Gly molecules. The limit of detection of EC-SERS sensor to Gly could reach 1.9 nM. In addition, the EC-SERS sensor we prepared could also sensitively identify Gly residues on fresh fruit peels. The PANI/RGO/Ag/Cu film we proposed in this paper has great potential for selective and accuracy detecting Gly residues in agricultural products.
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高影响因子
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