Materials Today Chemistry
·
2023
·
IF 7.3
Yang Du,Yunxiu Wang,Zhuofan Cao,Jie Ding,Zifeng Guo,Hengjia Shao,Yang Li,Juyang Yan,Renqing Sun,Xintao Zhang,Tao Sun,Fuyi Jiang,Caifu Dong
Metal sulfides with high capacity, morphology-controlled, and facile synthesis are considered as potential anodes for Na-ion batteries. However, the conductivity and structural stability of electrode materials are still hampered by its inherent low conductivity and obvious volume changes during cycling. Herein, Cu 7.2 S 4 nanoparticles anchored on reduced graphene oxide (Cu 7.2 S 4 /RGO) are successfully prepared by solvothermal and thermal processes. The product, Cu 7.2 S 4 /RGO-10, not only features optimized the amount of RGO , but also delivers a large reversible capacity (314.4 mAh g −1 at 2 A g −1 ), good cycling stability (with a capacity fading of 0.11% per cycle from 2nd to 400th) and excellent rate capability (209 mAh g −1 at a high current density of 20 A g −1 ), making it the promising anode material for SIBs . Kinetics analysis clarifies that the high ion diffusion coefficient and the pseudo-capacitance contribution are important reasons for the superior performance. As expected, sodium-ion full cells (Cu 7.2 S 4 /RGO//Na 3 V 2 (PO 4 ) 3 ) also show good cycling stability.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
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DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Mingyue Piao,Xue Peng,Huishi Du,Hongxue Du,Wei Zhang,Yuwei Sun,Honghui Teng
Cadmium (Cd) emissions have a negative impact on both human health and the environment. Although nano zero-valent iron (nZVI) offers a lot of potential for water pollution treatment, it has been constrained by its instability and ease of aggregation. For the elimination of Cd(II) from aqueous solution, nZVI/MCM supported nZVI (nZVI/MCM-41/rGO) was designed to improve its dispersion and stability. It had a rough, porous structure with apparent Fe (0) crystallinity and slight rGO crystallinity. On the surface of nZVI/MCM-41/rGO, several oxygen-containing groups were detected. The specific surface area was 15.94 cm 2 /g, and the pore diameter was concentrated at 23.82 nm. The best performance was occurred at pH 6 with an adsorbent dosage of 2 g/L, and a maximum adsorption capacity of 31 mg/g was achieved after 600 min. Cd(II) removal process was well fitted with second-order kinetic, Langmuir and Freundlich isotherm. The thermodynamic parameter was also analyzed and proved that it was an endothermic (ΔH° > 0) and spontaneous (ΔG° < 0) progress. During adsorption, the crystal type and functional groups of nZVI/MCM-41/rGO did not change, but Fe (0) was oxidized.
研究领域:
环境科学
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材料科学
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水处理
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纳米技术
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吸附技术
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 5.2
Qinqin Qian,Haocheng He,Songyin Fu,Jia Xu,Ho-Pui Ho,Shuwen Zeng,Tao Jiang,Sheqin Lv,Chenjie Gu
The efficient and sensitive monitoring of the interleukin-6 (IL-6) is crucial for the clinical tracking and diagnosis of chronic obstructive pulmonary disease (COPD). Herein, a novel surface-enhanced Raman scattering substrate (RGO@MoS 2 /Ag NPs), comprising an efficient charge-transfer and adsorption layer of reduced graphene oxide (GO) encapsulated in molybdenum disulfide (MoS 2 ) and an electromagnetic enhancement layer of Ag nanoparticles, was developed for the highly sensitive, label-free detection of IL-6. Experimentally, a precursor film consisting of (NH 4 ) 2 MoS 4 and GO was first deposited onto a rough g -C 3 N 4 substrate via spin-coating process. Subsequently, the above precursor film was subjected to a two-step high-temperature annealing process for preparing the RGO@MoS 2 charge transfer layer. Finally, Ag NPs were sputtered onto the RGO@MoS 2 film to induce the localized surface plasmons for the further enhancement of the SERS performance. Leveraging the high specific surface area and exceptional charge transfer properties of RGO@MoS 2 , together with the high-density “hot spots” generated by surface Ag NPs, the fabricated SERS substrate exhibited remarkable electromagnetic and chemical enhancement effects. By using the rhodamine 6G (R6G) as the Raman reporter, it was determined that the lowest detection limit could be as low as 10 −9 M on the optimal SERS substrate, with an enhancement factor of 2.2 × 10 9 . Meanwhile, the substrate also exhibited good uniformity, with a relative standard deviation of 9.84%. Finally, the prepared SERS substrate was used to detect the IL-6, it showed good linear response in the range of 5.0-1000 pg/mL, with a detection limit as low as 0.41 pg/mL.
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Z.P. Liu,J.N. Ren,T.N. Man,S.B. Gu,Y.F. Li,J.Y. Xu,M.W. Zhu,S.V. Panin,S.W. Lu
Conventional honeycomb microwave-absorbing structures cannot simultaneously achieve superhydrophobic protection and electromagnetic impedance matching under harsh service conditions such as high humidity, salt spray, and icing. To address this, the present work proposes a surface-energy-driven self-assembly strategy. RGO/SiO₂ nanostructures are introduced into a phenolic resin matrix to form a gradient architecture, which is then applied to a functionalized aramid paper honeycomb. The self-assembled gradient structure creates a low-surface-energy micro/nanostructured rough interface on the outer surface, endowing the coating with excellent superhydrophobic and anti-icing properties. Meanwhile, it enhances the incidence and dissipation of electromagnetic waves through the synergistic effects of outer-layer impedance buffering, intermediate loss enhancement, and multiple interfacial polarization. The results show that the 3FCPR coating exhibits a water contact angle of 153° and an ice delay time of approximately 8 min 30 s. In terms of electromagnetic performance, the honeycomb structure achieves an effective absorption bandwidth (EAB) of 10.6 GHz with a minimum reflection loss of −31 dB. By adopting a vertical gradient design, the EAB of the functionalized aramid honeycomb (FAH) structure is further broadened to 14.5 GHz, covering the C, X, and Ku bands. The surface-energy-driven self-assembly strategy enables the synergistic integration of superhydrophobicity, anti-icing capability, and microwave absorption while preserving the mechanical properties of the honeycomb itself. This work provides a new route for the multifunctional integrated design of lightweight honeycomb microwave absorption materials.
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Yujie Han,Xujie Su,Lifang Fan,Zhiguang Liu,Yujing Guo
Cardiac troponin I (cTnI) is a “gold standard biomarker” for clinical diagnose of acute myocardial infarction (AMI) . Rapid, accurate, and sensitive detection methods for cTnI are highly urgent and significant in early diagnosis and progression control. In this work, we proposed an electrochemical aptasensing platform for cTnI detection based on copper nanowires/molybdenum disulfide/reduced graphene oxide (CuNWs/MoS 2 /rGO) ternary nanostructure. The CuNWs/MoS 2 /rGO composite exhibited improved electrochemical activity due to the high electrochemical conductivity and the synergistic effect among each component, and the large surface area, which also facilitates the immobilization of aptamers. As a result, the constructed electrochemical cTnI aptasensor shows good selectivity, stability, and reproducibility towards cTnI. Under optimized conditions, the aptasensor responses cTnI linearly from 5.0 × 10 −13 to 1.0 × 10 −10 g mL −1 with a detection limit of 1.0 × 10 −13 g mL −1 (S/N = 3). The analysis of cTnI in human blood samples demonstrated its practicability with comparable results. This work offers an alternative way for facile fabrication of CuNWs/MoS 2 /rGO based aptasensor for clinical biomarker detection.
研究领域:
生物医学工程
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分析化学
·
心血管疾病诊断
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Dong Ma,Juan Wu,Mengchun Gao,Yanjun Xin,Tianjin Ma,Yuying Sun
An efficient visible-light-driven Z-scheme g -C 3 N 4 /RGO/Bi 2 WO 6 composite was fabricated by the hydrothermal method. The prepared g -C 3 N 4 /RGO/Bi 2 WO 6 composite were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), nitrogen sorption, Fourier transform infrared spectroscopy (FT-IR), diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectrometer (XPS). The photocatalytic activity of the g -C 3 N 4 /RGO/Bi 2 WO 6 composite was evaluated by the degradation of 2,4,6-trichlorophenol (TCP) under visible-light irradiation. The photochemical test and scavenging experiment showed the photogenerated electrons (e − ) and holes (h + ) had strong reducing capability and oxidation capability, respectively. The photocatalytic activity of the g -C 3 N 4 /RGO/Bi 2 WO 6 composite was higher than that of the pure g -C 3 N 4 , Bi 2 WO 6 , and g -C 3 N 4 /Bi 2 WO 6 during the TCP degradation, which could be due to the efficient visible-light utilization efficiency and the construction of Z-scheme. RGO served as a charge transmission bridge between the g -C 3 N 4 and the Bi 2 WO 6 , and the Z-scheme kept the electrons with high reducing capability in the conduction band (CB) of g -C 3 N 4 and the holes with high oxidation capability in the valence band (VB) of Bi 2 WO 6 . The photogenerated holes of Bi 2 WO 6 were the major active species in the TCP oxidative degradation, and the photogenerated electrons of g -C 3 N 4 were the major active species in the TCP dechlorination.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2013
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IF 2.915
Bin Zeng,Xiaohua Chen,Xutao Ning,Chuansheng Chen,Aiping Hu,Weina Deng
Carbon nanotubes and reduced graphene oxides (CNTs/rGO) sphere decorated with Cu 2 O, CuO nanoparticles (Cu x O–CNTs/rGO) was successfully synthesized by spray drying and post-calcinating method for the first time. Scanning electron microscopy and transmission electron microscopy observations confirmed that CNTs/rGO formed a spherical micrometer structure and Cu x O nanoparticles were decorated on their surface. The experimental results indicated that this novel architecture enhanced photocatalytic performance with 97.5% decomposition of methyl orange (MO) after 20 min in the presence of H 2 O 2 under visible light irradiation, which was much higher than that of pure Cu x O powders (31.2%).
研究领域:
材料科学
·
纳米科技
·
光催化
·
环境功能材料
·
复合材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 47
·期 14
·20310-20316
·
IF 4.527
Yang Yan,Linlin Zang,Tianwei Dou,Haicheng Li,Liguo Sun,Yanhong Zhang
In this work, we prepared a hollow Co 3 O 4 nanoparticles (NPs) immobilized reduced graphene oxide (rGO)/carbon monolith (HCGCM) via a one-step carbonization method. The doping of nanomaterial and transition metal oxide can improve the poor conductivity and low capacitance of pure carbonaceous materials. The optimal addition concentration of polystyrene microspheres as a template provided the HCGCM composite with a hierarchical pore structure and a large specific surface area (1600 cm 2 /g), which is conducive to generating sufficient electroactive sites. At the same time, three dimensional (3D) interconnected pores shorten ion transport paths and reduced diffusion resistance of ions. Due to the existence of pseudocapacitive behavior, the HCGCM composite, as an electrode material working in a three-electrode system, achieved a high capacitance value of 1106 F/g at a current density of 1 A/g. In two-electrode system, the asymmetric supercapacitor had excellent stability performance and remained about 86.7% capacitance after 5000 cycles test. Moreover, it also exhibited a maximum energy density of 66.7 Wh/kg at power density of 750 W/kg. Thus, the strategy of manufacturing 3D porous electrodes is beneficial to improve the overall electrochemical performance of supercapacitors .
研究领域:
材料科学
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电化学
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纳米科技
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能源存储
·
功能材料
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Jie Yu,Yuan Zhang,Jiahao Chen,Lele Cui,Wenheng Jing
A solvothermal-induced assembly of a 2D-2D reduced graphene oxide (rGO)-TiO 2 mesoporous material with a laminar structure for membrane construction is reported, in which using 2D-2D rGO-TiO 2 as building blocks can preeminently enhance the separation properties of the as-prepared membrane without sacrificing the permeance. Taking advantage of the large specific surface area (324 m 2 /g) available for interfacial effects as well as interwoven stacking and narrow layer spacing of 2D morphologies for size exclusion, the fresh rGO-TiO 2 membrane exhibited excellent separation performance toward organic dye from water (>97.3% for Rhodamine B, Methyl orange, Methyl blue and Congo red), while achieving good permeance up to approximately 9.36 L m −2 h −1 bar −1 and an outstanding structural stability under the cross-flow process of filtration. More importantly, the reduced band gap energy (Eg) of 2D-2D rGO-TiO 2 membrane layer (2.77 eV) compared with that of the blank TiO 2 membrane (3.24 eV) allows the rGO-TiO 2 membrane to have an impressive self-cleaning ability and thus exhibits great potential application in the field of membrane separation .
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Shiqi Zhang,Peidong Ling,Yi Chen,Jun Liu,Chun Yang
Herein, 2D/2D porous Co 3 O 4 nanosheets/rGO composites modified GCE (Co 3 O 4 /rGO/GCE) were proposed for electrochemical detection of tryptophan (Trp). The surface morphology and structure of Co 3 O 4 /rGO nanosheets were carried out using SEM, XRD , and Raman spectra . Electrochemical performance of Trp on as-synthesized modified electrodes were discussed by CV and EIS techniques. Moreover, the best electrochemical property was also investigated by varying test condition detailedly. Consequently, oxidation peak intensity and current density were 130.3 μA and 336.7 μA·cm −2 on Co 3 O 4 /rGO/GCE at working potential of 0.78 V ( vs. SCE electrode), respectively. They were more than 23-times greater than these on bare GCE in electrochemical detection of Trp. It was attributed to the synergy effect of 2D porous Co 3 O 4 nanosheets (high catalytic activity) and 2D rGO nanosheets (large electrochemical active area). After the optimization, wide linear determination ranges (from 1.0 to 800 μM) and low LOD of 0.26 μM (S/N = 3) were acquired. In addition, these electrodes were further successfully applied to the determination of Trp in commercial amino acid injection samples. This 2D porous Co 3 O 4 /rGO modified GCE sensor could provide a slight view on the design of 2D/2D composite materials with high electrochemical properties.
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高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Xiaoju Wang,Shanshan Hu,Haitao Mao,Xueyu Wei,Saraschandra Naraginti
In the recent past, the development of efficient materials for degradation and detoxification of antibiotics has gained more attention in wastewater treatment process . As a visible light active material AgVO 3 has attracted much concern in environmental remediation. To improve its efficiency and stability, a novel heterojunction was prepared by combining AgVO 3 with rGO and BiVO 4 through a hydrothermal method. The prepared AgVO 3 /rGO/BiVO 4 composite was further utilized for effective detoxification of Norfloxacin (NFC) antibiotic. The morphological analysis revealed the clear rod shaped AgVO 3 and leaf like BiVO 4 that are evenly distributed on reduced graphene oxide (rGO) layers. The visible light absorbance and the catalytic activity of AgVO 3 /rGO/BiVO 4 was dramatically improved compared to pure AgVO 3 and BiVO 4 . From the results it showed that the degradation efficiency of AgVO 3 /rGO/BiVO 4 (∼96.1%, k = 0.01782 min −1 ) was 2.5 times higher than pure AgVO 3 and 3.4 times higher than the pure BiVO 4 respectively towards NFC after 90 min. The higher efficiency could be attributed to the heterojunction formation and faster charge separation. The radical trapping experiments results indicated that the •OH, and O 2 •− are the main species responsible for degradation. The degradation products of NFC were analysed through ESI-LC/MS and pathway was proposed. Furthermore, the toxicity assessment of pure NFC and its degradation products was studied using E. coli as the model bacteria through colony forming unit assay and the results indicated the efficient detoxification was attained during the degradation process. Thus, our study provides new insight into detoxification of antibiotics using AgVO 3 based composites
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yuan Shu,Tingkai Zhao,Weiyu Jia,Lei Yang,Xianghong Li,Guyue Feng,Yatao Li,Fa Luo
The combination of magnetic and dielectric materials followed by appropriate structure design is an effective approach to achieve high electromagnetic wave absorption properties. Here, crosslinked Co@CoO/reduced graphene oxide nanohybrids (CCRGO) were fabricated via a simple three-step method. The experimental results show that compared with previous works, the as-prepared CCRGO nanohybrids achieve higher electromagnetic wave absorption and broader effective bandwidth at a lower filler loading. The electromagnetic parameters and electromagnetic wave absorption performance could be apparently adjusted by controlling the adding content of graphene oxide (GO) and the reduction temperature. Among a series of samples, CCRGO3-650 nanohybrid yields the best electromagnetic wave absorption performance benefiting from the proper GO addition and reduction temperature. At a filler loading of 20 wt%, the maximal reflection loss reaches to −64.67 dB at a thickness of 2.53 mm and the effective bandwidth below −10 dB covers the whole X band at a thickness of 2.51 mm. The good performance may be ascribed to the advantages of the dielectric and magnetic component as well as the special crosslinked structure, which triggers a synergistic absorption mechanism including multiple reflection/scattering, interface polarization, dipole polarization, conductive loss, eddy current loss, exchange resonance in the electromagnetic wave dissipation process. The good electromagnetic wave absorption performance affirms the potential application of CCRGO nanohybrids in the field of stealth materials.
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产品关联
DOI
PubMed
高影响因子
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