PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Hao Lu,Shengtao Zhang,Zhiheng Zhao,Yang Zhou,Weihua Li
In this paper, VB 2 had been added to modify the simple oligoanilines integrated with rGO for further improving the corrosion protection properties. Trimer aniline (TA) had been synthesized to fabricate a novel composite with rGO after functionalized with VB 2 . Through the combination of VTA and rGO, enhanced electrical properties were discovered, which were attributed to the graphitic structure and the π-π* interactions between rGO and VTA. As a result, VTA-rGO composite provided excellent barrier performance against corrosive electrolyte diffusion and owned better corrosion protection properties than TA and VTA individually, with the combination of VTA and rGO.
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DOI
高影响因子
BMC Chemistry
·
2025
·Vol. 19
·期 1
·1-15
·
IF 4.6
Lei Ying,Bao Qijing,Lin Feng,Zhang Jian,Zhang Yanji,Wu Yuechao,Lv Liang,Ding Liyong
Graphite carbon nitride (g-C 3 N 4 ) has emerged as a promising photocatalyst for visible-light-driven applications due to its suitable band structure. However, the rapid recombination of photogenerated electron-hole pairs in bulk g-C 3 N 4 significantly hinders its photocatalytic efficiency. In this study, we report the fabrication of a ternary g-C 3 N 4 /MoS 2 /rGO (CMG) nanocomposite via in situ photoreduction-induced exfoliation. The introduction of MoS 2 and rGO not only facilitates the exfoliation of g-C 3 N 4 into ultrathin nanosheet, thereby exposing more active sites, but also enables the formation of tightly coupled heterojunctions that promote charge separation and transfer. Photoluminescence (PL) analyses confirm the suppressed recombination of charge carriers, indicative of enhanced charge dynamics within the heterojunction between MoS 2 , rGO and g-C 3 N 4 . Among the synthesized materials, the optimized CMG-175 composite exhibits remarkable photocatalytic activity, achieving a 95.7% degradation rate of Rhodamine B (RhB) within 30 min under visible light irradiation, which is 23.6-fold enhancement compared to pristine g-C 3 N 4 . Mechanistic studies reveal that photogenerated holes and superoxide radicals are the predominant reactive species driving the degradation process. This work highlights a rational design strategy for constructing high-performance g-C 3 N 4 -based heterojunction photocatalysts and provides valuable insight into the synergistic interactions among MoS 2 , rGO, and g-C 3 N 4 for efficient organic pollutant removal.
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产品关联
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Jiangnan Chen,Zhouchao Wang,Lin Xu,Huifang Wang,Xianghua Gao,Baolong Niu,Wenfeng Li
In the realm of glucose detection, nickel-based and copper-based nanocomposites have garnered significant attention due to their exceptional catalytic performance and high sensitivity. This study realized linear detection across dual concentration ranges in alkaline media by in situ growing Ni/Cu-BTC spherical nanocatalysts on reduced graphene oxide (rGO). From 350 μM to 2.95 mM, with a low detection limit (LOD L ) of 21.7 μM (S/N = 3) and a sensitivity (S L ) of 40 nA mM −1 cm −2 ; from 2.95 mM to 9.45 mM, the high-concentration detection limit (LOD H ) is 1.1 mM (S/N = 3), with an improved sensitivity (S H ) of 165.7 nA mM −1 cm −2 . The response time (t) is under 2 s. Additionally, the sensor demonstrated robust interference resistance, excellent stability (%RSD = 3.57 %), repeatability (%RSD = 2.27 %), and reproducibility (%RSD = 2.34 %). In real-world sample testing, this sensor measured glucose concentrations in plasma from healthy individuals both on an empty stomach and half an hour after eating, with a relative standard deviation range of 0.94 %–2.33 %. These results suggest that the rGO-Ni/Cu-BTC composite is a promising enzyme-free electrochemical sensing material for glucose detection
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yu Rao,Kongjun Zhu,Guoliang Zhang,Feng Dang,Jiatao Chen,Penghua Liang,Zhihan Kong,Jun Guo,Hongjuan Zheng,Jie Zhang,Kang Yan,Jinsong Liu,Jing Wang
Molybdenum sulfide has been widely investigated as a prospective anode material for Li+/Na+ storage because of its unique layered structure and high theoretical capacity. However, the enormous volume variation and poor conductivity limit the development of molybdenum sulfide. The rational design of a heterogeneous interface is of great importance to improve the structure stability and electrical conductivity of electrode materials. Herein, a high-temperature mixing method is implemented in the hydrothermal process to synthesize the hybrid structure of MoS2/V2O3@carbon-graphene (MoS2/V2O3@C-rGO). The MoS2/V2O3@C-rGO composites exhibit superior Li+/Na+ storage performance due to the construction of the interface between the MoS2 and V2O3 components and the introduction of carbon materials, delivering a prominent reversible capacity of 564 mAh g–1 at 1 A g–1 after 600 cycles for lithium-ion batteries and 376.3 mAh g–1 at 1 A g–1 after 450 cycles for sodium-ion batteries. Theoretical calculations confirm that the construction of the interface between the MoS2 and V2O3 components can accelerate the reaction kinetics and enhance the charge-ionic transport of molybdenum sulfide. The results illustrate that interfacial engineering may be an effective guide to obtain high-performance electrode materials for Li+/Na+ storage.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Xin-Yang Lu,Sheng-Feng Zhang,Fen-Ying Kong,Zhong-Xia Wang,Heng-Ye Li,Hai-Lin Fang,Wei Wang
In this paper, a glassy carbon electrode (GCE) modified with TiO 2 -ZnO-reduced graphene oxide (TiO 2 -ZnO-rGO) nanocomposites was designed for the selective and simultaneous quantification of hydroquinone (HQ) and catechol (CA). The TiO 2 -ZnO-rGO nanocomposites were prepared by a simple ultraviolet irradiation method for the first time. In the process of ultraviolet radiation, the photogenerated electrons in TiO 2 and ZnO were transfered into GO which was then reduced to form rGO. Benefiting from functional properties of different components and synergistic effect, the TiO 2 -ZnO-rGO nanocomposites exhibited excellent sensing performance for the selective and simultaneous determination of HQ and CA. Under the optimized conditions, the linear ranges for selective assay of HQ or CA in the existence of 40 µM of the respective isomer are 5–500 µM. The linear ranges for simultaneous assay of HQ and CA are obtained from 0.1 to 100 µM with the detection limits of 0.03 µM (HQ) and 0.05 µM (CA), respectively. The TiO 2 -ZnO-rGO/GCE also displayed excellent stability and satisfactory recovery when applied for real water samples analysis.
研究领域:
分析化学
·
环境科学
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DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Xiaoqian Dong,Xiaochen Yu,Xu Zhang,Zhehan Zhang,Xiao He,Ruru Wei,Youru Bai,Jibin Fan
Tb-ZnO/reduced graphene oxide (Tb-ZnO/RGO) nanocomposites were prepared by a simple one-step solvothermal method. The samples were characterized by XRD , SEM, XPS, BET, FT-IR, and Raman spectroscopy , and their photocatalytic activities toward different pollutants (RhB, MO, PR, and MB) degradation were evaluated. Tb-ZnO/RGO nanocomposite shows enhanced photocatalytic activity with high kinetic constants (0.04 min −1 ) and good stability. Enhanced charge separation and migration have been analyzed using UV–Vis absorption spectra , PL spectra, and EIS analysis. Improved photocatalytic activity can be ascribed to the smaller band gap, larger specific surface area (28.3478 m 2 /g) and more effective separation and transport of photogenerated carriers by Tb 3+ and RGO. All the results show that the nanocomposite catalyst has a good application prospect in the degradation of pollutants.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2019
·
IF 9.518
Jiangle Yi,Zhen Liu,Jianhui Liu,Hanbiao Liu,Fangquan Xia,Dong Tian,Changli Zhou
A novel label-free electrochemical aptasensor was fabricated based on a three-dimensional porous electrode (3D-CS/rGO/GCE) for the detection of acetamiprid residues. The sensing signal was generated by the DNA itself. The porous electrode was prepared by electrodeposition in situ and characterized by scanning electron microscope (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). These results indicated that the porous electrode has a uniform nanoporous structure, high active area, and excellent conductivity , leading to improve the transmission efficiency of current signals. The 3D-CS/rGO/GCE was used to increase a load of acetamiprid aptamer on the electrode. Meanwhile, DNA self-assembly strategy was used to further increase the DNA amounts. Thus the electrochemical current was amplified significantly due to increased phosphate group amounts by the above synergistic effect . The determination of acetamiprid residues using square wave voltammetry (SWV) showed good sensitivity, with the linear range from 0.1 pM to 0.1 μM and the detection limit was 71.2 fM. The label-free electrochemical aptasensor was also used to detect acetamiprid residues in tea samples with satisfactory results.
研究领域:
分析化学
·
环境科学
·
食品科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121293
·
IF 7.2
Yang Liu,Tingting Fan,Changhao Liu,Yun-Ze Long
Managing oily wastewater under harsh conditions poses a significant challenge in environmental protection. Conventional membranes are often ineffective in treating oily wastewater under complex environmental conditions and typically fail to achieve complete oil–water separation. This work reports the preparation of a reduced graphene oxide (rGO)/zeolitic imidazolate framework (ZIF-8) @ polyphenylene sulfide (PPS) fiber membrane by in-situ growth of ZIF-8 on the rGO-coated PPS fiber membrane. The incorporation of the rGO increases the roughness of the fibrous membrane and enhances the bond between the polymer membrane and the ZIF-8 layer, as the oxygen-containing groups of rGO can interact with the Zn 2+ of the ZIF-8 precursor, facilitating the preferential growth of ZIF-8 crystals on the rGO surface. The resulting rGO/ZIF-8@PPS membrane exhibits underwater superoleophobic and under-oil superhydrophilic properties, endowing it with switchable oil-water separation capabilities (oil-passing water-blocking or water-passing oil-blocking). During the oil (chloroform)/water separation process, it achieves high efficiency (99.96 %) and flux (27,176 L m −2 h −1 ). After 10 separation cycles using either water or oil as the permeating phase, the membrane maintains a high filtration flux (20,500 L m⁻² h⁻¹) and separation efficiency (99.97 %). Additionally, it can efficiently separate a range of oil/water mixtures under different acidic and alkaline conditions, retaining excellent separation efficiency and flux even after 10 cycles. This composite fibrous membrane provides a novel approach for treating large-scale oily wastewater in harsh environments.
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高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Lu Peng,Peng Nian,Jingwei Feng,Xiangxiang Han,Binhua Cui,Songsheng Lu,Jie Zhang,Chenming Li,Aiyong Zhang
The present study evaluated fabrication of bioactivated carbon (BAC) from waste activated sludge (WAS) for methyl tert-butyl ether (MTBE) removal from aqueous solution. BACs were prepared using KOH, H 3 PO 4 , and ZnCl 2 as chemical activation reagents, followed by thermal activation. Batch experiments with different BAC types and dosages, solution pH, initial MTBE concentrations, and contact times were conducted to investigate the BAC effectiveness. The obtained data were analyzed using the kinetics and isotherm model and also with artificial neural network (ANN). The result of Fourier transform infrared (FTIR) spectra of WAS and BAC was depicted that the C–H and C–C were major surface functional groups. The ZnCl 2 activated carbon had the highest adsorption capacity for MTBE adsorption, followed by H 3 PO 4 and KOH activated carbons. The results showed that the highest MTBE removal was observed at solution pH equal to 4 and approximately 30% of MTBE could be adsorbed with 30 min contact time. It was also found that MTBE adsorption followed the R–P isotherm and pseudo-second order (type 1) kinetic models. During ANN modeling, the optimum neurons number for Levenberg–Marquardt training algorithm was determined equal to 5 with highest R 2 value and lowest mean square error were found to be 0.99 and 5.7 × 10 –4 , respectively.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
·
物理化学
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DOI
高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 12
·5407-5415
·
IF 3.5
Sijie Duan,Yue Peng,Hongyu Guan,Weilin Chen
The crystalline quality of perovskite films is a key factor that affects the performance of perovskite photovoltaic devices. Polyoxometalates can better match the energy levels of each layer in the devices through their own suitable energy level and band gap, and the good light absorption of POMs can also increase the mobility of photogenerated carriers in the devices. Moreover, POMs with Keggin-type structures can also improve the crystalline quality of perovskite films by eliminating defect sites, which can lead to better crystallization of perovskites with larger grains. In this study, we optimized the crystalline quality of a perovskite layer using the SiW9Co3@rGO composite prepared using POMs and graphene derivatives. XRD and SEM tests show that the crystallization degree of the perovskite layer was improved, the average grain size of which can reach up to 1222.92 nm, which is nearly four times higher than that of a blank perovskite. The photoresponse current of a SiW9Co3@rGO-doped photodetector can reach to 43.94 μA, which is about 226% higher than that of an undoped device. At the same time, the addition of the composite can improve the stability of photodetectors because of the special network structure of graphene. Photodetectors doped with SiW9Co3@rGO can still maintain more than 90% of their high performance for a month. This study proves that POM-based composites have good application prospects in the field of photovoltaic devices.
研究领域:
材料科学
·
纳米科技
·
光电子学
·
半导体物理
·
能源材料
·
表面与界面化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·Vol. 48
·期 71
·27557-27567
·
IF 7.2
Xiaobing Xu,Heng Ma,Wei Xu,Xueming Liu,Haifeng Chu,Lei Zhang,Xinglong Wu
Heterostructure and phase engineering are effective method to tune the electronic structure of MoS 2 , which can activate and boost its intrinsic catalytic activity. Herein, the theoretical calculations reveal that the free energy of H∗ adsorption (ΔG H∗ ) for Mo 2 C (−0.65 eV) is lower than MoS 2 (2.05 eV), which is favorable for hydrogen adsorption. Inspired by the theoretical predictions, we develop a facile strategy to prepare nanostructured Mo 2 C/MoS 2 dispersed on reduced graphene oxide (rGO) via a hydrothermal preparation and carburization reaction. Since the Mo 2 C/MoS 2 -rGO nanostructures with great deal of both MoS 2 and Mo 2 C edges by heterostructure and phase engineering, which can induce massive active sites for HER on the surface of rGO, the intimate interfacial coupling effect between Mo 2 C and MoS 2 can effectively improve the charge transfer rate. The Mo 2 C/MoS 2 -rGO catalyst exhibits exceptional HER properties, delivering a high turnover frequency (TOF) of 0.209 s −1 at an overpotential of 200 mV in 0.1 M KOH. This work may open a new window for designing NPM electrocatalysts with highly efficient HER property based on earth-abundant materials.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量转换
·
催化
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2018
·Vol. 5
·期 9
·2092-2099
·
IF 5.106
Jinxue Guo,Ke Zhang,Yanfang Sun,Yingxia Zong,Ziyang Guo,Qingyun Liu,Xiao Zhang,Yongyao Xia
Layered MoS2 has been recognized as a promising low-cost alternative to Pt-based electrocatalysts towards the hydrogen evolution reaction (HER). Intensive interest has been mainly focused on designing MoS2 nanostructures with large amounts of active edge sites and fast charge transfer. Here we report the synthesis of vanadium and nitrogen co-doped MoS2 on reduced graphene oxide with new defect sites on the basal/edge planes and expanded interlayer spacing, which shows remarkable catalytic merits with an extremely low overpotential of 68 mV at 10 mA cm−2 and a Tafel slope of 41 mV dec−1. Its performance is superior to most current MoS2 electrocatalysts. In addition to the charge transfer benefits of the RGO substrate, the vanadium and nitrogen dopants trigger defect sites on the basal/edge planes, and an optimized electronic structure and expanded interlayer distance are also responsible for the enhancement in catalysis. This contribution may offer a potential way to design advanced MoS2 catalysts by modulating the defect sites and interlayer distance for efficient electrochemical water splitting.
研究领域:
材料科学
·
电化学
·
纳米催化
·
能源转换
·
表面科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）