IONICS
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2025
·
IF 2.6
Chen Shi,Xu Yong,Ye Mingfu,Wang Mingyue,Wang Wenhai,Wu Konglin
Epinephrine (EP) is a crucial hormone secreted by adrenal, and its secretion and transmission are closely associated with various health conditions. Therefore, developing advanced EP detection methods is of great importance. Herein, an innovative electrochemical sensor has been successfully established based on the Fe 2 O 3 and reduced graphene oxide (Fe 2 O 3 –rGO) nanocomposite. Benefiting from the vast specific surface area of Fe 2 O 3 and the high conductivity of rGO, the Fe 2 O 3 –rGO nanocomposite was synthesized via a solvothermal method. The material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) to analyze its phase composition and morphology. The built sensor demonstrated highly sensitive and selective detection performance towards EP. The Fe 2 O 3 –rGO sensor demonstrated outstanding analytical performance for EP detection, achieving a low detection limit (LOD) of 0.18 µM and a wide linear range from 0.2 to 30 µM. This performance is superior to that of most previously reported electrochemical sensors for EP. The selectivity tests confirmed that the sensor showed excellent anti-interference capabilities against EP structural analogs and other potential interfering substances. In real sample assays, the Fe 2 O 3 –rGO sensor was successfully used to determine EP in commercial veterinary drug and spiked human serum samples, fully demonstrating its practical analytical value.
研究领域:
分析化学
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生物传感器
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纳米医学
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电化学分析
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药物分析
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临床检验
✓ 已验证
产品关联
DOI
高影响因子
FERROELECTRICS
·
2018
·
IF 0.728
Zhiyang Yuan,Yanfen Xue,Lingna Sun,Yongliang Li,Hongwei Mi,Libo Deng,Weiliang Hong,Xiangzhong Ren,Peixin Zhang
LiFePO4/reduced graphene oxide composites (LiFePO4/RGO) were synthesized via a simple solid phase combined with carbothermal reduction method. The samples were characterized by X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). Furthermore, cyclic voltammetry (CV), electrochemicaal impendence spectroscopy (EIS) and galvanostatic charge/discharge tests were conducted to further study the electrochemical properties of LiFePO4/RGO composites. The initial discharge specific capacity of LiFePO4/RGO was 151.5 mAh g−1 at 0.1C, and after 50 cycles, it still remains 149.2 mAh g−1. The results reveal that LiFePO4/RGO composites improved the discharge specific capacity and rate charge-discharge performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Manman Xie,Dongdong Zhang,Yiqing Wang,Yiping Zhao
Reduced graphene oxide/zinc oxide-rods composites (RGO/ZnO) were prepared through simple hydrothermal treatment of graphene oxide /zinc peroxide (GO/ZnO 2 ) microspheres. The results of TEM, SEM and XRD show that the rod-like structure ZnO were successfully transformed from ZnO 2 microspheres after high temperature treatment and combine well with GO . The synthesized RGO/ZnO-rods composites showed better photocatalytic performance as compared to pure ZnO 2 , ZnO and GO/ZnO 2 under UV and visible-light irradiation. The improved photocatalytic performance of RGO/ZnO-rods composites was attributed to the uniform structure and excellent electrical conductivity of RGO, which could reduce the combination rate of the photo electron-hole pairs. After 5 consecutive cycles of testing, the RGO/ZnO-rods composites still have excellent photocatalytic performance, which was found to depend on ZnO content and NaCl concentration but was not affected by pH. The result of ESR experiment confirmed that the superoxide radicals (O 2 − ) and hydroxyl radicals (O H) play an important role in the decolorization process of MO. Additionally, the kinetic rate constant (K) and mechanism of RGO/ZnO-rods composites had also been studied.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 17
·5749-5757
·
IF 7.393
Jiankui Zhou,Hanfang Feng,Yadong Wang,Qingqing Sun,Yingliang Liu,Xuying Liu,Li Zhang,Shaokui Cao
Random resistive access memory (RRAM) devices with a simple structure, low power consumption, and tunable switching behavior have emerged as promising candidates to simulate biological synapses. Here, we demonstrate solution-processable RRAM devices with FeC–rGO nanocomposites by intercalating nano-aggregating ferrocenes (FeCs) between the reduced graphene oxide (rGO) sheets, in which FeCs anchor on the surface of rGO through π–π stacking interactions. The Al/FeC–rGO/ITO devices fabricated by spin-coating exhibit a low SET/RESET voltage of −1.7 V/+2.1 V and a high ON/OFF ratio of 108, which results from the formation/rupture of conductive paths between rGO sheets gated by the redox of FeCs. Besides, the devices show high repeatability, excellent durability and favorable flexibility. In addition, the obtained device can be utilized to simulate the potentiation and depression of synapses by applying a pulse voltage below VSET, further contributing to image pattern recognition. Thus, this approach aims to fabricate information storage devices for future use in artificial intelligence.
研究领域:
材料科学
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神经形态计算
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电子工程
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2015
·Vol. 40
·期 1
·372-376
·
IF 3.086
Weidong Jiang,Zhen Xiang,Bin Xu,Xiaojing Li,Fuan Liu,Guangyin Fan
Uniformly dispersed Pd nanoparticles supported on reduced graphene oxide (RGO) have been conveniently synthesized by a facile one-pot approach through the co-reduction of sodium tetrachloropalladate(II) and graphene oxide (GO) using NaBH4 as the reducing agent. The catalytic activity of Pd/RGO was investigated for aqueous hydrodechlorination (HDC) of chlorophenols at room temperature using hydrogen balloon pressure without any additives. Results indicated that Pd/RGO exhibited an excellent activity with a reaction rate of 280.0 min−1 gpd−1 for the hydrodechlorination (HDC) of 4-CP. Furthermore, the Pd nanoparticles supported on RGO can be easily recovered and reused for four times without any obvious leaching and loss of activity.
研究领域:
化学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 3
·1-13
·
IF 2.6
Li Shuo,Tao Yulun,Wu Yuannan,zhu Shanshan,Khademi Sara,lv Yinru,Tai Yanlong,Wang Chaoran
The high integration and multifunctionality in flexible electronic device play an important role in its development. In this study, we developed multifunctional hydrogels integrated with supercapacitive, photoelectric, and strain-sensing capabilities. The hydrogel composite consists of PAM/PVA matrix with polyaniline (PANI) and reduced graphene oxide (rGO) as conductive components. Two different acid dopants, citric acid (CA) and hydrochloric acid (HCl), were employed to investigate their impact on photoelectrochemical capabilities of hydrogels. Both CA-doped and HCl-doped hydrogels exhibited remarkable supercapacitive performance, achieving areal capacitances of 492 mF/cm 2 and 538 mF/cm 2 , respectively. Furthermore, both hydrogels demonstrated photosensitivity towards shorter wavelengths such as ultraviolet (380 nm) and blue (475 nm) light. Lastly, the proposed hydrogels serving as highly sensitive strain sensors was verified through effectively sensing arm bending movements.
研究领域:
材料科学
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电化学
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光电子学
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传感器
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纳米技术
✓ 已验证
DOI
高影响因子
iScience
·
2022
·
IF 6.107
Yimin Zhao,Quan Zhang,Jianbing Ma,Ruobing Yi,Lu Gou,Dexi Nie,Xiaona Han,Lihao Zhang,Yuetian Wang,Xintong Xu,Zhe Wang,Liang Chen,Ying Lu,Shengli Zhang,Lei Zhang
The preparation technology of unconventional low-dimensional Cu 2 O monocrystals, which exhibit specific crystal planes and present significantly unique interfacial and physicochemical properties, is attracting increasing attention and interest. Herein, by integrating a high-temperature oxidation process under vacuum and a pure-water incubation process under ambient conditions, we propose the self-assembled growth and synthesis of quasi-two-dimensional Cu 2 O monocrystals on reduced graphene oxide (rGO) membranes. The prepared Cu 2 O crystals have a single (110) crystal plane, regular rectangular morphology, and potentially well conductivity. Experimental and theoretical results suggest that this assembly is attributed to the pre-nucleation clusters aggregation and directional attachment of Cu and O on the rGO membranes in aqueous environment and cation-π interactions between the (110) crystal plane of Cu 2 O and rGO surface. Our findings offer a potential avenue for the discovery and design of advanced low-dimensional single-crystal materials with specific interfacial properties in a pure aqueous environment.
研究领域:
材料科学
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纳米技术
·
表面化学
·
晶体学
✓ 已验证
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Xu Han,Guoping Liu,Li Wu,Xiubo Min,Zhongsheng Wen
Due to the large ionic radius of Na⁺, sodium storage is often accompanied by sluggish ion transport and limited interfacial reaction kinetics, posing significant challenges for the development of high-performance sodium-ion battery electrode materials. To address these issues, a Co-modified WS 2 /rGO composite was constructed via a hydrothermal method combined with subsequent thermal treatment. The Co-WS 2 /rGO electrode delivers a reversible capacity of 283.5 mAh g -1 after 300 cycles at a current density of 2 A g -1 , along with favorable rate capability. Kinetic analyses reveal a higher surface-controlled contribution and lower charge-transfer resistance for Co-WS 2 /rGO compared with WS 2 /rGO. Operando electrochemical analyses further reveal reduced polarization and improved reaction reversibility during Na⁺ storage. These results demonstrate that Co modification combined with rGO incorporation is an effective strategy for improving the interfacial electrochemical kinetics and sodium-storage performance of WS 2 -based anodes. Download: Download high-res image (196KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2026
·
IF 7.1
Mengru Wang,Biao Zhang,Wen-Sheng Zou,Jinhui Zhang,Yaqin Wang
A self-cleaning ultrafiltration membrane with electrically switchable antifouling and antibacterial functions was developed by incorporating a g‑C 3 N 4 /reduced graphene oxide (rGO) composite into a polyvinylidene fluoride (PVDF) matrix. At + 1.5 V, the optimized membrane (M3, 7.5 wt% g‑C 3 N 4 ) achieved a pure water flux of 115.97 L·m −2 ·h −1 , and a BSA flux retention 85.6 % (51.35 L·m −2 ·h −1 ) after 3 h, outperforming the control membrane (M0) with 76.57 L·m −2 ·h −1 , and 59.2 % retention (35.53 L·m −2 ·h −1 ). The M3 membrane achieved a BSA rejection of 99.70 %, a flux recovery ratio (FRR) of 93.86 %, and an antibacterial efficiency of ∼99.7 % against E. coli under dark conditions. The superior self-cleaning performance is attributed to the synergistic effects of enhanced electrostatic repulsion and electrocatalytic generation of reactive oxygen species (ROS). This work offers a practical strategy for designing smart separation membranes with on-demand antifouling and self-cleaning capabilities for advanced water purification.
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Weibin Deng,Qingyang Wu,Chaohui Peng,Jiaolong Liu,Keke Li,Rui Zhou,Peng Chang,Hao Jiang,Yating Zhang,Hongjing Wu
The urgent need for efficient electromagnetic (EM) wave absorbing materials is driven by the increasingly severe issue of EM radiation. Heterostructures assembled from nanoscale building blocks, not only inherit the advantages from the single component but also create novel properties. Herein, the CoNiO 2 nanowires were grown in situ and tightly anchored onto reduced graphene oxide (RGO) nanosheets via a hydrothermal process followed by annealing treatment. The aggregation and restacking of RGO nanosheets is inhibited by the CoNiO 2 nanowires. The construction of 1D/2D heterojunction not only effectively reduces the conductivity of RGO, thereby improving the impedance matching of CoNiO 2 /RGO composites, but also brings about strong interface polarization that governs high-frequency polarization loss. Furthermore, the microwave absorption performance of the CoNiO 2 /RGO composites could be finely tuned by varying the precursor content. Benefiting from the multiple advantages of the 1D/2D heterojunction, the optimized CoNiO 2 /RGO composite at a low filler loading of 20 wt% achieves a minimum reflection loss value of −53.75 dB and an effective absorption bandwidth of 4.70 GHz. Furthermore, the actual effectiveness of the composite is verified through radar cross-section simulation. This work opens a new avenue to enhance EM wave absorption performance of 2D graphene-based heterojunctions.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kewei Shu,Wenjuan Li,Yi Zhang,Yan Zong,Huilan Li,Yu Wang,Zixiong Sun
Flexible, miniature, and lightweight supercapacitor is ideal power source for next-generation portable and wearable electronics. However, their widespread application is limited by a critical drawback, self-discharge, which leads to energy loss during idle periods. To this end, a polyvinylidene fluoride (PVDF)-based nanofiber separator with piezoelectric properties that can effectively suppress self-discharge in supercapacitors, was prepared via electrospinning. By incorporating hydrophilic cellulose acetate (CA) and reduced graphene oxide (rGO) into the PVDF matrix, both the electrolyte affinity and piezoelectric output of the separator are significantly enhanced. The resulting rGO/CA/PVDF composite membrane exhibits outstanding mechanical flexibility, high porosity, excellent electrolyte uptake, making it highly suitable separator for flexible supercapacitor. Supercapacitors equipped with such separator exhibit superior electrochemical performance with a specific capacitance of 178.2 F/g at 10 A/g. Notably, an impressive capacitance retention of 79 % was achieved after 24 h of self-discharge test. The reduction in self-discharge is primarily due to the limited diffusion of electrolyte ions, induced by the polarized rGO/CA/PVDF composite separator endowed with improved piezoelectric characteristics. This work highlights the potential of piezoelectric separators as an effective strategy for long-term energy retention, and offers new insights into the rational design of functional separators with self-discharge mitigation capabilities.
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Chengxue Li,Xiaojian Jiang,Jianhong Liu,Chunhui Zhang,Chunxiu Liu,Huikai Nan,Yubing Dong
To extend the service life of shape memory ethylene-vinyl acetate (EVA), the titanium dioxide/reduced graphene oxide/EVA composites (TiO 2 -P/rGO/EVA and TiO 2 -PF/rGO/EVA) were prepared by an impregnation method and modified with triethoxy-1H,1H,2H,2H-tridecafluoro-n-octylsilane and 1H, 1H, 2H, 2H-perfluorooctyltrichlorosilane as hydrophobic agents, respectively. The hydrophobic/anti-icing properties, surface durabilities, shape memory properties, and UV-aging resistance of the composites were systematically investigated. The TiO 2 /rGO/EVA composites exhibit exceptional hydrophobic and anti-icing performance. The TiO 2 -P/rGO/EVA composites and TiO 2 -PF/rGO/EVA composites displayed water contact angles of 150.7° and 152.2°, respectively, with sliding angles of 6.4° and 4.9°, and both retained these values after durability tests. Frozen droplets on the TiO 2 -P/rGO/EVA composites could melt and slide off after 36 s of NIR irradiation. The composite displayed outstanding two-way shape memory behavior with multi-stimuli responsiveness, achieving reversible deformation under either 40 V electrical stimulation or NIR irradiation. It also possessed near-complete UV shielding (≈ 100%) and remarkable UV resistance: after 14 days UV exposure, it maintains 22.10% reversible strain and 99.35% shape recovery ratio; after 28 days, relative electrical conductivity remains at 87.5%. Hydrophobicity persists for over 48 h under UV irradiation in N 2 atmosphere. Furthermore, the TiO 2 /rGO/EVA composites surface wettability can be modulated through UV irradiation-washing-recoating cycles.
研究领域:
材料科学
·
智能材料
·
聚合物复合材料
·
刺激响应材料
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）