MATERIALS RESEARCH BULLETIN
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2024
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IF 5.3
Guoxin Ding,Chenfeng Sun,Meiyi Wang,Yuexiang Hu,Guojun Cheng,Jun Liu
The 2D nanomaterial has been widely used in the field of electromagnetic wave absorption because of its high specific surface area and special electrical properties. In this work, three 2D materials were integrated to form a unique ternary composite with Ti 3 C 2 T x MXene as the substrate, RGO as the intercalator with additional components, and CoFe-LDH loaded on the MXene/RGO surface. The interfacial and dipole polarizations were notably enhanced due to the abundant formation of heterogeneous interfaces between the three 2D materials and their corresponding abundant functional groups and defects, and the space between the 2D lamellae enabled multiple reflections of electromagnetic waves. Compared with pure MXene, the MXene/RGO/CoFe-LDH composites exhibited excellent electromagnetic wave absorption performance due to the synergy of multiple loss mechanisms, resulting in the best reflection loss value of −58.9 dB at 13.12 GHz.
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高影响因子
ELECTROCHIMICA ACTA
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2016
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IF 4.803
Ying Yang,Qiao Liu,Xing-Pei Liu,Ping-Zhen Liu,Chang-Jie Mao,He-Lin Niu,Bao-Kang Jin,Sheng-Yi Zhang
A novel multifunctional reduced graphene oxide (RGO)/Fe 3 O 4 /PDDA/CdSe nanocomposite has been successfully prepared and used as probe for an electrochemiluminescence (ECL) immunosensor of human interleukin-6 (IL-6). The prepared RGO/Fe 3 O 4 /PDDA/CdSe nanocomposite was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible (UV–vis) absorption spectroscopy , and a vibrating sample magnetometer (VSM). This nanocomposite shows magnetism, ECL properties, and good biocompatibility. Furthermore, the RGO/Fe 3 O 4 /PDDA/CdSe nanomaterial was applied to develop an ultrasensitive ECL immunosensor for detection of IL-6. The ECL intensity decreased linearly with the IL-6 concentrations in the range 0.002 to 20 ng/mL. Furthermore, the developed ECL immunosensor with high sensitivity, stability and excellent reproducibility can be used for detection of real samples, which make it possible to be used in clinical detection.
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高影响因子
Journal of Sulfur Chemistry
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2024
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IF 2.1
Yuyang Wang,Tao Ge,Xinju Zhan,Song Liu,Yulu Wei,Yueyue Qiao
The incomplete reduction of graphene oxide (GO) yields reduced graphene oxide (rGO), characterized by a zero band gap and intrinsic layer stacking, thus constraining its practical utility across diverse domains. Fortunately, this challenge can be effectively addressed by employing a suitable substrate for the fabrication of MoS2/rGO heterostructures. Nanocomposites of MoS2/reduced graphene oxide (MoS2/rGO-700W and MoS2/rGO-560W) were synthesized using MoS2 and GO solutions as starting materials through microwave-assisted synthesis with microwave power treatments of 700W and 560W, respectively. Structural characterization results reveal that the particle size of MoS2 within the composites is notably smaller compared to that of pure MoS2. The MoS2/rGO-700W composite demonstrates a more homogeneous dispersion of MoS2 and features a well-developed hierarchical porous structure with increased pore volume and specific surface area. The MoS2/rGO-700W composite demonstrates elevated ID/IG ratio, C/O ratio and C = C peak area, suggesting that increased microwave power enhances the removal of oxygen-containing groups from rGO. This process significantly restores the extended conjugated structure of graphene, thereby offering enhanced conductivity at the MoS2 interface. Furthermore, the proposed strategy holds considerable theoretical value and provides significant insights for the development process of novel MoS2-based composite electrode materials.
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Lihong Liu,Bo Li,Ming Yang,Yannan Mu,Duo zhang,Lihua Huo
Metal oxide and graphene composite material have been a promising material for developing electrochemical sensors. In this work, we prepared graphene (rGO) doped MoO 2 hollow nanosphere composite (MoO 2 /rGO) using a simple one-step solvothermal without any template.The hollow nanosphere was constructed by nanoparticles and uniformly anchored onto graphene sheets.The dopamine (DA) sensor was constructed by modifying the MoO 2 /rGO composite to the glass carbon electrode (GCE) surface with a simple drop coating (MoO 2 /rGO/GCE), which shows high sensitivity(101.20 μA·μM -1 ·cm -2 ), low detection limit (6.8 nM), high selectivity and good stability for DA. Meanwhile, the MoO 2 /rGO/GCE demonstrates very little interference with dopamine determination when both Uric acid (UA) and ascorbic acid (AA) are present. The exceptional efficacy of the sensor is attributed to the MoO₂/rGO composite's unique attributes,which include a hollow structure, low charge transfer resistance, a large electrochemical active area, and an abundance of active sites. Furthermore, the MoO₂/rGO/GCE sensor demonstrates capabilities for the detection of minute dopamine levels in human serum, utilizing the standard addition method. This suggests its applicability in the realm of biomedical diagnostics.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Dongmin An,Jialun Dai,Zongwei Zhang,Yingyue Wang,Nan Liu,Yunling Zou
In this study, series of rGO/SnO 2 nanocomposites were synthesized with hydrothermal method by mixing graphene oxide (GO) solution and pre-prepared SnO 2 quantum dot solution. The phase structure and morphology of the as-obtained rGO/SnO 2 nanocomposites were analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–vis absorption spectrums, Raman spectroscopy, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) technique. The detailed investigation of gas-sensing properties of rGO/SnO 2 nanocomposites-based sensors exhibited that the gas response of SnO 2 -based sensors to ethanol gas increased with the addition of GO, especially when the GO dosage reached 3.3 wt%, which revealed the highest response value of 48.34–50 ppm ethanol gas at 120 °C. Besides, it also displayed an excellent selectivity, good repeatability and long-time stability. The mechanism of rGO functionalized SnO 2 and enhanced ethanol gas sensing property at relative low temperature was proposed.
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高影响因子
Journal of Materials Chemistry A
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2018
·Vol. 6
·期 41
·20513-20522
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IF 9.931
Yunyun Huang,Aoxiang Xiao,Guanhua Hou,Hongtao Li,Tuan Guo,Bai-Ou Guan
An in situ strategy to understand the photocatalytic performance of Cu2O–Ag@rGO nanocomposites through interfacial photocatalysis on an optical microfiber has been proposed and experimentally demonstrated. The photocatalysts were conjugated on the surface of an optical microfiber immersed in an organic solution, forming an interface consisting of photocatalysts and organic molecules between the silica microfiber and the solution, which was within the evanescent field of the optical microfiber. In the photocatalytic process, the decomposition of organics changed the refractive index (RI) of the interface. The interaction between the evanescent wave and the microfiber interface modulated its optical spectrum. Therefore, the optical microfiber monitored the photocatalytic performance of the photocatalysts in real-time and in situ. The results reveal that the photodegradation efficiency of Cu2O–Ag@rGO was almost twice that of Cu2O, while the degradation rate constant was more than five times larger, because the coupling between the silver nanoparticles and reduced graphene oxide (rGO) enhanced the photocatalytic performance of Cu2O. By taking advantage of its miniature size and mechanical flexibility, the microfiber can directly probe a real matrix to study the local photocatalytic performance. This strategy is suitable for the evaluation of most photocatalysts and might provide a new perspective to assess the photocatalytic performance of the catalysts.
研究领域:
材料科学
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光学
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环境科学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Guanshu Zhao,Jing Ding,Fanyang Zhou,Qingliang Zhao,Kun Wang,Xueqi Chen,Qingwei Gao
A novel W doped BiVO 4 with rich oxygen vacancies (OVs) oriented on reduced graphene oxide (rGO) photocatalyst (W-BiVO 4-x /rGO) was developed by a simple one-step microwave hydrothermal method for efficient removal of ciprofloxacin (CIP) and chlortetracycline (CTC) under visible light. The synergistic effect of W doping, BiVO 4 with OVs, and rGO on the enhancement of photocatalytic activity was clarified from experimental and Density Functional Theory (DFT) calculations results. W doping significantly improved the density of photo-generated charge carriers. The introduction of rGO enlarged the specific surface area, expanded the light absorption range, and promoted the charge transfer of BiVO 4 . OVs both narrowed the band gap and enhanced the generation of O 2 − . W doping and OVs both enhanced the interactions between BiVO 4 and rGO. The CIP degradation rate constant of W-BiVO 4-x /rGO photocatalyst was 1.73, 5.32, 6.43, and 10.70 times higher than those of W-BiVO 4 /rGO, BiVO 4 /rGO, W-BiVO 4 , and BiVO 4 , respectively. Besides, W-BiVO 4-x /rGO photocatalyst prepared by microwave hydrothermal method exhibited higher photocatalytic activity and better combination between materials. This study offers a new strategy to address the problem of antibiotic residues in wastewater.
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Shiyu Jia,Lei Zha,Xiangbo Zhao,Shouli Bai,Ke Tian,Yongjun Feng
Based on the advantages of low cost, photoelectrochemical stability and non-toxicity of BiVO 4 , we prepared BiVO 4 photoanode by the classical electrodeposition method and grew Bi 2 S 3 in situ relying on its own bismuth source to construct a type-II heterojunction. The BiVO 4 /Bi 2 S 3 /rGO ternary photoanode exhibits excellent PEC performance under the synergistic effect of rGO modification and heterojunction. The results show that the photocurrent density of the BiVO 4 /Bi 2 S 3 /rGO photoanode at 1.23 V vs RHE reaches 2.40 mA·cm -2 , which is 3.4 times higher than BiVO 4 (0.70 mA·cm -2 ), the onset potential is negatively shifted by 140 mV compared with BiVO 4 , and the highest IPCE and ABPE efficiencies reach 39.68% and 0.24%, respectively, while the charge transfer resistance R ct was reduced to 163 Ω. The enhancement is attributed to the construction of the heterojunction and its synergistic effect with rGO, which is from extending the visible light absorption of the photoanode, promoting the effective separation of carriers, and accelerating of interface charge transfer as well as providing more active sites for water oxidation.
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高影响因子
APPLIED SURFACE SCIENCE
·
2015
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IF 2.711
Dong Ma,Yanxiang Zhang,Mengchun Gao,Yanjun Xin,Juan Wu,Nan Bao
A composite of reduced graphene oxide (RGO) and InVO 4 nanofiber was successfully synthesized by an electrospinning technique. The as-collected fibers were calcined at 420 °C in air and then calcined at 550 °C in nitrogen gas to remove polyvinyl pyrrolidone (PVP), which could enable InVO 4 to crystallize and protect the RGO from oxidation. The InVO 4 in the composite illustrated a hollowed-out fibrous morphology and orthorhombic phase, and RGO nanosheets were nested in the InVO 4 nanofibers. The hybrid RGO could produce more hydroxyl groups and a higher oxygen vacancy density on the surface of RGO/InVO 4 composite. Compared with pure InVO 4 , the light absorption range of the as-prepared RGO/InVO 4 composite was expanded. In Rh B degradation, the RGO/InVO 4 hybrid nanofibers displayed a higher photocatalytic activity than pure InVO 4 nanofibers. The enhanced photocatalytic activity might be ascribed to the role of RGO as an electron transporter and acceptor in the composite, which could effectively inhibit the charge recombination and facilitate the charge transfer. The exported electron could attack an O 2 molecule to facilitate the generation of •O 2 − and •OH for the photodegradation process of Rh B.
研究领域:
材料科学
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环境科学
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高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 20
·3699
·
IF 5.719
Congyi Qian,Xiaohui Liang,Mei Wu,Xingxin Zhang
A lightweight microwave-absorbing material with a strong electromagnetic-absorption capability of practical significance in the field of electromagnetic compatibility was obtained by adjusting the ratio of Fe3O4and rGO. A nanoparticle material with a chain-typed structure consisting of a combination of Fe3O4and rGO was produced by a hydrothermal method under an applied magnetic field. The electromagnetic loss property of the Fe3O4@rGO composites is studied in the frequency range from 2 to 18 GHz. In addition, the reflection loss and the mechanism of microwave absorption are explored. By changing the amounts of rGO, the electromagnetic loss of the Fe3O4@rGO composites can be effectively regulated, which obtain better reflection loss. The minimum reflection loss of the Fe3O4@rGO composites is −49.4 dB at 16.2 GHz only with a thickness of 1.75 mm. Thus, the Fe3O4@rGO composites have an extremely thin thickness and a strong electromagnetic wave absorption capacity, which is a candidate for the development of lightweight magnetic absorbing materials.Keywords:magnetic composites;microwave absorption;electromagnetic loss;lightweight
研究领域:
材料科学
·
电磁学
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 7
·9640-9649
·
IF 2.478
Ding Xiao,Fan Guang,Huang Yi,Wang Jianguo
Reduced graphene oxide-molybdenum disulfide (RGO-MoS 2 ) loaded Fe 3 O 4 nanoparticles composite (RGO-MoS 2 -Fe 3 O 4 ) is prepared via two-step hydrothermal reaction. RGO-MoS 2 possesses three dimension architecture structures. This structure can prevent RGO and MoS 2 nanosheets restacked together and provide substrates for the Fe 3 O 4 nanoparticle decoration. The sizes of Fe 3 O 4 are in the range of 5–20 nm. As a microwave absorbent: the minimum reflection loss (R L ) value is -47.67 dB at 17.44 GHz when the thickness is only 1.5 mm. The absorption bandwidth (R L < −10 dB) can reach 4.72 GHz with the thickness is 1.7 mm. Compared with the previously reported literature, RGO-MoS 2 -Fe 3 O 4 nanocomposite exhibits excellent microwave absorption performance and can be served as an light-weight microwave absorber.
研究领域:
材料科学
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电磁学
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Rujie Yang,Pengxu Wang,Liuyuan Zhu,Yingjie Di,Yingying Huang,Binjie Zhou,Shujin Wu,Haiping Fang,Shanshan Liang
Graphene oxide (GO) membranes are limited by inherent structural instability and relatively low permeability in aqueous environments, which hinder their practical application in waste water treatment. To address these challenges, we engineered reduced graphene oxide (rGO)/MXene heterogeneous membranes by constructing these two kinds of two-dimensional membranes. The resulting rGO/MXene heterogeneous membranes achieved an exceptional separation performance, with the highest water permeance of up to 401.2 L m⁻² h⁻¹ bar⁻¹ while maintaining 99.7% rejection of dye molecules. The water permeance was 2.4 times greater than that of pristine rGO membranes and competitively surpasses most advanced nanofiltration (NF) membranes reported for dye wastewater treatment. More importantly, the rGO/MXene heterogeneous membranes exhibited outstanding mechanical robustness under demanding filtration environments. Notably, the membrane maintained structural integrity after 50 deformation cycles (stretching/bending) in hydrated conditions. Additionally, rGO/MXene heterogeneous membranes showed good antifouling performance. Overall, these findings indicate the strong potential of such new materials as durable and high-efficiency separation material membranes for industrial water-treatment applications.
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