Micro & Nano Letters
·
2019
·Vol. 14
·期 4
·373-378
·
IF 0.975
Yakun Zhang,Kuan Luo,Jingang Yu,Xinyu Jiang
Humic acid (HA) sodium salt (SH)-modified graphene oxide (GO) composite, which could snatch Pb (II), Cd (II) and Cu (II) effectively from aqueous solution, was fabricated by a green hydrothermal method. Here, the morphology and structure of as-synthesised SH–GO composite was presented through scanning electron microscopy, Roman spectra, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and thermal gravimetric analysis. Owing to the introduction of cheap and readily available HA sodium salt, the adsorption capacity of SH–GO toward heavy metals was improved obviously, and the corresponding removal behaviours were further investigated in detail. Besides, the adsorption results were in good agreement with Langmuir isotherm and the pseudo-second kinetic model, where the thermodynamic parameters revealed the adsorption process was spontaneous and endothermic in essence. Adsorption–desorption result showing its stable adsorption capacity confirmed its great potential as adsorbent for removal of heavy metal ions from aqueous solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF NUCLEAR MATERIALS
·
2026
·
IF 3.3
Runze Jin,Lijie Qu,Baosheng Xu,Jun Liang
A radiation-resistant nanocomposite exhibiting robust mechanical performance at cryogenic temperatures is developed based on a one-dimensional–two-dimensional (1D–2D) hybrid architecture, designated CPN CuO NGO. This material integrates cyclodextrin polymer (CPN)-functionalized CuO nanorods firmly anchored on amino-functionalized graphene oxide (NGO), with the NGO sheets serving as protective layers that shield the nanorods from environmental degradation. When incorporated into epoxy resin (EP), the CPN CuO NGO hybrid markedly enhances the composite's stability under combined γ-irradiation and cryogenic exposure. The π-conjugated sp² domains of NGO efficiently scavenge irradiation-induced peroxide radicals, achieving a radical scavenging efficiency of 46.3 %. After exposure to 800 kGy γ-irradiation, the EP/CPN CuO NGO composite retains 93.0 % of its original tensile strength at 77 K, with an absolute tensile strength of 115.85 MPa—substantially higher than that of neat EP under identical conditions. This work provides a rational design strategy for multifunctional nanocomposites that simultaneously withstand intense ionizing radiation, cryogenic temperatures, and mechanical stress, offering promising material solutions for aerospace and nuclear applications operating in extreme environments.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Yuan Gao,Kunmei Su,Xiaotian Wang,Zhenhuan Li
Nano graphene oxide (NGO) particles with the multiscale structure were prepared, and divalent metal cations (Ca 2+ , Cu 2+ and Mg 2+ ) were employed as crosslinking agents to closely stack nano NGO particles both on the surface and in the pore-channels of poly(p-phenylene sulfide) (PPS) membrane support forming the novel filter layer which had the similar structure with metal-organic frameworks (MOFs) through electrostatic forces and coordination bonds. Metal-NGO framework exhibited the similar MOFs structure with permanent nanoscale cavities and open channels, and Metal-NGO frameworks modified PPS membrane displayed the most excellent H 2 O permeability and high dyes rejection performance. In Metal-NGO/PPS hybrid membrane, Metal-NGO frameworks were closely attached with PPS membrane surface though the coordination between metal ions and -S- of PPS. Compared with the transversal interlayer molecular transport channel of conventional GO membranes, Metal-NGO frameworks modified PPS membrane possessed the shortest permeable channel, highest pore-opening rate, continuous GO transmission layer and multistage structure of nano channel, endowing the membrane with ultrafast water molecular transport rate and high pure-water flux of 3109.5 LMH/MPa. Furthermore, the prepared Metal-NGO frameworks modified PPS membrane exhibited the high rejection rate at 99.9% in RB rejection.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 14
·791
·
IF 3.5
Yu Lian,Lu Jiarui,Yu Meng,Duan Yajing,Zhang Baofeng,Zhang Xuan,Wang Xiaoyue,Liang Cunzhen
Cu(I) doped Fe 3 O 4 nanoparticles was loaded onto graphene oxide, Cu-Fe 3 O 4 /GO with binary active sites and accelerated Fe(III)/Fe(II) cycle showed higher tetracycline hydrochloride oxidation efficiency than Fe 3 O 4 and Cu-Fe 3 O 4 , the influences of initial H 2 O 2 concentration, reaction pH, catalyst dosage, reaction temperature and radical scavengers on catalytic performance of Cu-Fe 3 O 4 /GO were investigated. The heterogeneous Fenton reaction over Cu-Fe 3 O 4 /GO surface contained Fe(III)/Fe(II) and Cu(II)/Cu(I) active sites, Fe species were the dominant active centers. Cu-Fe 3 O 4 nanoparticles and GO combined via C–O–Fe bond and formed a stable Cu-Fe 3 O 4 /GO conductive structure, which promoted electrons transfer between Cu-Fe 3 O 4 and H 2 O 2 , thus accelerating Fe(III)/Fe(II) and Cu(II)/Cu(I) cycles. GO significantly improved specific surface area, Cu-Fe 3 O 4 nanoparticles dispersibility, and adsorption performance of catalyst. Furthermore, the strong interaction between GO and Cu-Fe 3 O 4 prevented ions from leach, GO captured the soluble Fe(III) which was efficiently reduced to Fe(II) surf by surrounding H 2 O 2 and Cu(I) surf . The degradation efficiency maintained 80.7% after six cycles, the excellent stability can be ascribed to the strong interaction between Cu-Fe 3 O 4 and GO. Reactive oxygen species scavenging results indicated that surface-bound • OH surf played a dominating role, followed by aqueous • OH aq and superoxide radicals (O 2 •− ).
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2020
·
IF 6.444
Huaiming Jia,Yongcun Li,Yunbo Luan,Yihao Zheng,Jinglei Yang,Luobin Wang,Zhangxin Guo,Xiaodong Wu
Bionic structural material is a new type of high-performance material that has promising applications in the fields of aerospace, bio-medicine, etc. Herein, an investigation on the easy scale-up process and mechanical behavior of large-sized three-dimensional graphene oxide-based bioinspired nacre bulk materials with excellent mechanical properties was carried out. These bulk materials could be prepared by a lamination assembly strategy based on mass of two-dimensional graphene oxide nacre-mimetic films that fabricated by the continuous dry-spinning assembly technology. The mechanical mechanisms analysis showed that the lamination assembly process could control the interface bonding, and regulated the interface load transfer and failure models of the hierarchical structures, then optimized the combination of strength and energy absorption of the materials to meet different application requirements. These results may provide useful guidance for the efficient and controllable production of high-performance artificial nacre structure materials in application.
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2023
·Vol. 29
·期 23
·e202300009
·
IF 4.3
Qian Li,Fuyuan Yu,Yaru Cui,Juan Wang,Yan Zhao,Jianhong Peng
Graphical This work aims to improve conductivity and cycle stability of bare SnO 2 through constructing special p-n heterostructures and graphene oxide (GO) modification to promote charge transfer and electrochemical reversibility, protect the intrinsic materials and alleviate volume expansion. Further, the band structure and charge state density of SnS−SnO 2 @GO were simulated by first principles, whose accuracy was verified in the practical experiments subsequently. SnO 2 is a theoretically excellent transformed anode material with high theoretical capacity for SIBs. However, SnO 2 faces serious volume effect and high resistance, which greatly damages its electrochemical performance. Given that, the SnS−SnO 2 heterostructures is constructed with special internal electric field, which is beneficial to promote the transfer ability of sodium ions. Besides, the graphene oxide (GO) modification is carried out to isolate the intrinsic materials from direct contact with electrolyte, and alleviate volume expansion of the anode, ultimately promote the electrochemical performance. Furthermore, the structure and the conductivity characteristics of SnS, SnO 2 , SnS−SnO 2 and SnS−SnO 2 @ GO are simulated respectively by first principles and are compared with the correspondence experiment results to verify the accuracy of established models. Owing to the special p-n junction in SnS−SnO 2 @GO heterostructures, the resistance of SnS−SnO 2 @GO can be reduced to 36.23 Ω, much lower than that of SnO 2 (Rct=341.9 Ω). Notably, the combination of GO has effectively alleviated the volume expansion of SnS−SnO 2 @GO electrodes, and present excellent capacity higher than 384.7 mAh g −1 after 100 cycles. Thus, the efficient synthesis of SnS−SnO 2 @GO heterostructure electrodes with excellent performance for sodium storage is expected to provide valuable direction for SIBs anode materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 45
·21942-21949
·
IF 3.925
Jiaqi Ma,Yehong Liu,Miaoxin Chen,Mengli Li,Shouhong Xu,Honglai Liu
Encapsulation and release of water-insoluble drugs has been a challenge. In this paper, a pH/glutathione (GSH) dual-responsive self-assembly based on graphene oxide (GO) was designed and fabricated for the effective delivery of the anti-cancer drug, quercetin (QU). The pH-sensitive poly(2-(diisopropylamino ethylmethacrylate) (PDPA) was synthesized and grafted onto GOvia a disulfide bond (GO–PDPA). Then, the hydrophobic QU was loaded onto GO–PDPA followed by coating with chitosan (CHI) to obtain a biological medium-stable GO-based self-assembly (GO–PDPA–CHI). Dynamic light scattering (DLS), field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS) were used to investigate their size and zeta-potential, morphology, and chemical structures. The coating of chitosan on GO–PDPA not only increased the pH sensitivity of the carrier but also reduced its drug leakage from 60% to 40% at a pH of 7.4. Drug release experiments also showed that under the stimulus of pH and GSH, the drug cumulative release amount was over 75%. The dual-sensitive GO-based self-assembly exhibits great potential as a drug carrier for hydrophobic drugs in cancer therapy.
✓ 已验证
产品关联
DOI
高影响因子
Chemosensors
·
2023
·Vol. 11
·期 2
·73
·
IF 4.2
Ying Song,Kunyue Xiao,Qiang Chen,Xiaodong Zhang,Zhi Yu,Wenwen Chen,Xiubing Zhang,De Zhang,Dejiang Ni,Pei Liang
The detection of bifenthrin is closely related to the adsorption of SERS substrates. In this study, superparamagnetic Fe3O4@Au MNPs coated with GO were used to detect the adsorption and enrichment of bifenthrin molecules with benzene rings. Firstly, the thermal solvent method synthesized Fe3O4magnetic nanoparticles (MNPs) with a particle size of ~250 nm. Next, polyethylene imide (PEI) was used as an intermediate layer to modify the surface of Fe3O4to form a positively charged ultra-thin polymer middle layer. Next, the gold shell was developed by adsorption of ~20 nm AuNPs, without affecting the magnetic properties. Then, the additional amount of colloidal gold and GO on SERS performance was systematically studied. Using crystal violet (CV) as the probe, we investigated the SERS performance of composite nanomaterials. The lowest detected concentration reached 10−8mol/L, confirming that the composite functional material had good SERS activity and magnetic properties. Finally, the substrate was used to detect bifenthrin in an acetone solution, and the lowest detection concentration was 10−8mol/L. These results showed that the prepared GO/Fe3O4@Au MNPs were efficient SERS substrates that could detect bifenthrin pesticide residue with high sensitivity.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 23
·4305
·
IF 5.719
Ting Zhang,Jingjing Zhang,Yinghao Yu,Jinxu Li,Zhifang Zhou,Chunlei Li
A new catalyst, copper oxide/graphene oxide–diatomaceous earth (CuO/GO-DE), was prepared by the ultrasonic impregnation method. The optimal conditions for catalyst preparation were explored, and its structure and morphology were characterized by BET, XRD, SEM, TEM, FTIR, Raman and XPS. By taking ciprofloxacin as the target pollutant, the performance and reusability of CuO/GO-DE to degrade antibiotic wastewater was evaluated, and the optimal operating conditions were obtained. The main oxidizing substances in the catalytic system under different pH conditions were analyzed, as well as the synergistic catalytic oxidation mechanism. The intermediate products of ciprofloxacin degradation were identified by LC-MS, and the possible degradation process of ciprofloxacin was proposed.Keywords:diatomaceous earth;graphene oxide;copper oxide;ciprofloxacin;catalytic mechanism
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Jian Wang,Di Zhang,Zhaojin Li,Qiujun Wang,Huan Wang,H.J. Woo,S. Ramesh,Yachuan Shao,Bo Wang
Transition metal polysulfides/oxides typically perform high reversible capacities in sodium-ion batteries/capacitors (SIBs/SICs), but low conductivity and slow redox reaction kinetics are still the main challenges for achieveing fast kinetics. Here, we construct the VS 4 /Nb 2 O 5 /GO composite structure, which can promote the overall conductivity and structural stability through the GO and VS 4 bonding (V-C and S-C) on the surface. Meanwhile, the chain-like VS 4 and Nb 2 O 5 connected with the V-O chemical bond can accelerate the electron and ion transfer internally, thus enabling the internal structure exposed during the activation process. Additionally, the bonding of VS 4 and Nb 2 O 5 is calculated by density functional theory (DFT), indicating that the strong metallic properties of the composite. When as the anode material of SIBs, the specific capacity of 268.8 mA h g −1 can be maintained after 2000 cycles at a current density of 10 A g −1 . After that, SICs are assembled using activated carbon (AC) as the cathode, which exhibit 58.01 Wh kg −1 at high power density of 3800 W kg −1 . This unique composite structure design can provide a reference for achieving fast electron and ion transport both internally and externally to the electrode material.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2022
·
IF 4.644
Hongfei Liu,Kexu Wang,Dongke Zhang,Dishun Zhao,Jianhua Zhai,Wenguang Cui
In this paper, an organic-inorganic hybrid material was synthesized via a simple but effective method, the novel material PGO-TiO 2 /Fe 3 O 4 (PGTF) was produced by loading TiO 2 and Fe 3 O 4 onto polymeric ionic liquid(PIL) functionalized graphene oxide(GO). The successful synthesis of PGTF and related structural feature were confirmed by a series of characterizations. The results of UV diffuse reflectance (DRS) demonstrated that the incorporation of PGO-Fe 3 O 4 to TiO 2 shifted the light absorption of TiO 2 from ultraviolet (UV) to visible region. The band gap energy of the PGTF reduced to1.92 eV as compared to TiO 2 (3.12 eV). Different materials were used to remove methyl orange (MO) from the aqueous solution. The results showed that PGTF had a superior capacity to remove dye due to the synergistic effects of adsorption and photocatalysis . The excellent adsorption properties may result from the high specific surface area of GO and the –NH 2 in the PIL. The polyionic liquid absorbed electrons due to the electrostatic action of the cation head in the polyionic liquid and GO which had high conductivity favored electron transport . The photocatalytic effectiveness increased as a result of the separation of photoexcited electron-hole pairs. The Langmuir model was investigated to evaluate the adsorption equilibrium behavior of MO dyes by PGTF. The maximum adsorption capacity( Q m ax ) was 67.88 mg/g for MO dyes. The pseudo-second-order kinetic model, with a correlation coefficient of 0.999, provided a good fit for the adsorption kinetic processes. The adsorption rate constant K 2 obtained by this model is 0.0072 g/(mg*min). The degradation rate constant of PGTF for MO in the photocatalytic stage was 0.00881 min −1 , which exhibited 3.7, 7.5 and 3 times higher than that of TiO 2 , FT and GTF. The main reactive species in the degradation process were O 2 − 、·OH、h + . PGTF had excellent repeatability because of the presence of Fe 3 O 4 . They can be easily separated from the water. These results indicated that the PGTF composites hold great potential for removing MO from wastewater.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Guzheng Mao,Tao Liu,Yuan Chen,Xue Gao,Jinchao Qin,Haoli Zhou,Wanqin Jin
Mixed matrix membranes (MMMs) are typically fabricated by mechanically mixing presynthesized polymers and fillers together in a solvent to form a membrane solution, which often causes poor filler dispersion in the polymer matrix . In this work, an in situ polymerization method was proposed by which 2,6,14-triaminotriptycene (Trip), octanedioyl chloride, and graphene oxide (GO) reacted in the polymerization to form a polyamide@GO mixed matrix polymer. Different characterization methods, such as Raman analysis, XRD (X-ray diffraction), and TGA (thermogravimetric analysis), were used to verify the chemical linking between GO and polyamide . The performance of the polyamide@GO membrane in the separation of cyclohexane/nitrogen mixtures was evaluated and compared with that of pure polyamide membranes and mechanically mixed polyamide + GO membranes. The polyamide@GO membrane with a GO content of 0.3 wt% exhibited the highest separation performance. The permeability increased from 427 Barrer to 1098 Barrer under the same rejection (99.4%) conditions compared with that of the pure polyamide membrane. Because incorporation of GO disrupted the efficient stacking of polyamide chains, more amorphous domains were formed, providing more transport channels. This work provides an alternative way to overcome the trade-off phenomenon in the synthesis of new MMMs.
✓ 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）