Nano Life
·
2015
·
IF 0
Qiong Yi,Ling Li,Lu Fan,Keke Sun,Lebao Mao,Keke Liang,Li Liu
The adsorption of three kinds of azo dyes from aqueous solution on HKUST-1/graphene oxide (GO) composite was studied in view of the removal efficiency, adsorption isotherm, and regenerate of the sorbent. HKUST-1/GO was found to be with higher dyes removal efficiency than HKUST-1. All the adsorption isotherms of azo dyes on HKUST-1/GO composite followed Freundlich isotherm. The adsorbed azo dyes on HKUST-1/GO could be eluted by acetone, so HKUST-1/GO can also be used for enrichment of azo dyes as adsorbent.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Bingchen Chen,Chao Wan,Xueting Kang,Mingqing Chen,Chunfang Zhang,Yunxiang Bai,Liangliang Dong
In this study, a facile and scalable in situ growth method was used to synthesize ZIF-8@GO composites. The obtained ZIF-8@GO were blended with a CO 2 -philic, comb copolymer yielding a series of mixed matrix membranes (MMMs), which were evaluated for their performance in separation of CO 2 /N 2 . The effect of reaction time for ZIF-8@GO composites on gas separation performance was systematically investigated. Pure and mixture gas permeation tests indicated that MMM with ZIF-8@GO by in situ growth for 6 h exhibited the largest improvement (CO 2 permeability: 475 Barrer and CO 2 /N 2 selectivity: 58.2) compared with pure polymers, with the overall CO 2 /N 2 separation performance exceeding the 2008 polymer upper bound. Our strategy that the in situ growth of ZIF-8 on GO provides an effective way to design MMMs with well filler dispersion, structural features and separation performance.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Peng Cheng,Yan Chen,Yi-Hang Gu,Xi Yan,Wan-Zhong Lang
Hybrid WS 2 /GO two-dimensional membranes were developed to achieve finely molecular sieving. The size of nanochannels in WS 2 membrane became smaller and more regular after the introduction of GO nanosheets into WS 2 membrane according to XRD and separation results. The hydrated hybrid WS 2 /GO membrane with 15 wt% GO (GO15WS 2 ) exhibited high rejection (>90%) for dyes and ions with a hydrated radius above 4.9 Å. A water permeance of 159.6 L/m 2 ·h·bar and a Methylene Blue (MnB) rejection of 96.3% were achieved through hydrated hybrid GO15WS 2 membrane, which was excellent compared with reported two-dimensional membranes based on TMDs . Moreover, the nanochannels in GO15WS 2 membrane also presented strong rigidity under a pressure loading up to 0.5 MPa. In addition, the half-dried GO15WS 2 membrane possessed high tolerance to shear stress, and the separation performance changed slightly during a 120 h-cross-flow filtration, which made the hybrid GO15WS 2 membrane promising in water filtration .
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 13
·2072
·
IF 4.329
Xiaoyan Liu,Ruidan Liu,Tianyu Li,Yanqi Liu,Li Liu,Kai Lyu,Surendra P. Shah
Graphene is a two-dimensional sheet of regular hexagonal honeycomb lattice formed by sp2hybrid orbital bonding, with only one layer thickness of a single atom, which is known as the “super king” of the 21st century. Previous studies have shown that cerium oxide-graphene oxide (CeO2-GO(4:1)) nanocomposites eliminated the agglomeration of graphene to some extent and the CeO2-GO(4:1) epoxy coating could be prepared with good anti-corrosion performance. In this paper, CeO2-GO(4:1) nanocomposites were prepared by the hydrothermal synthesis method, and the three-electrode method was used for electrochemical tests. The state evolution of CeO2-GO(4:1)/EP coating and the synergy between CeO2-GO(4:1)/EP and corrosion inhibitor in simulated seawater solution with different concentrations (20%, 40%, 60%) were analyzed and illustrated by Optical Microscope (OM) characterization, Open Circuit Potential (OCP), Electrochemical alternating current Impedance Spectroscopy (EIS), Mott–Schottky curve and Tafel curve. The results indicated that CeO2-GO(4:1) nanocomposites showed good corrosion resistance in a marine environment. This research lays a solid theoretical foundation for the application of cerium oxide-modified graphene oxide anticorrosive coating in marine engineering.Keywords:CeO2-GO;corrosion inhibitor;simulated seawater;corrosion area
研究领域:
材料科学
·
海洋工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 5
·51571
·
IF 3.125
Legang Chen,Zongxue Yu,Di Yin,Kunyao Cao,Chunxia Xie,Lijuan Zhu,Yong Jiang
Herein, a new strategy for improving epoxy coatings' anti-corrosion performance has been developed, which combined NH 2 -Ce-MOF with graphene oxide (GO) by hydrothermal method. First, the nanocomposite material's morphology and structure (GO-Ce-MOF) were confirmed by Fourier transform infrared, X-ray diffraction, TG, X-ray photoelectron spectroscopy, and scanning electron microscope (SEM) studies. The dispersity of the composite in the epoxy coating was evaluated by SEM and mapping analysis. Meanwhile, the anti-corrosion of as-prepared composite coatings was investigated in detail by the electrochemical impedance spectroscopy (EIS) and the Tafel polarization curve test. The results illustrated that 2.0 wt% GO-Ce-MOF/EP greatly enhanced the composite coating's anti-corrosion performance compared to other coatings. The reasons for the improvement of the anti-corrosion performance of the composite coating are attributed to the following two aspects: On the one hand, the addition of GO can provide a physical barrier to form a labyrinth effect to slow down the invasion of corrosive media into the metal substrate, on the other hand, the modification of GO can GO-Ce-MOF achieve better compatibility and dispersion in epoxy resin.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Journal of Industrial Textiles
·
2022
·
IF 2.926
Suo Liu,Jinyan Hu,Dingsheng Wu,Haiao Zeng,Tang Zhou,Maohuan Yang,Quan Feng
In order to solve the increasingly serious problem of printing and dyeing wastewater pollution, a kind of novel, efficient, and reusable spunlaced viscose/polyaniline-ZnO/GO fibrous membrane was fabricated in this work. Specifically, spunlaced viscose/polyaniline conductive fibrous membrane was firstly prepared by in-situ growth method, followed with the growth of zinc oxide (ZnO) and graphene oxide (GO) via the hydrothermal route to obtain spunlaced viscose/PANI-ZnO/GO fibrous membrane (SV@PANI-ZnO/GO membrane). The results show that the decolorization rate of SV@PANI-ZnO/GO membrane for methylene blue (5.0 mg/L) was 97.4% within 120 min, and the decolorization rate remained above 76.7% after five cycles. Moreover, the reaction process conformed to a quasi-first order kinetic model with the apparent rate constant of 0.0209 min–1. Meanwhile, the free radical capture experiment revealed that the main reactive species in the decolorization process was .OH. This work may provide a new method for designing photocatalytic materials for environmental applications.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 1
·242-245
·
IF 1.338
Sun Ke Ke,Li Ling,He Yu Qi,Fan Lu,Wu Ya Qi,Liu Li
A hybrid HKUST-1/GO composite was synthesized and its drug loading and drug release abilities were investigated. The adsorption of IBU (ibuprofen) onto the surface of HKUST-1/GO and HKUST-1 composites was compared, and it was found that the addition of GO enhanced both IBU loading and
stability. The addition of GO also enhanced the specific surface area. Drug release experiments on IBU loaded HKUST-1 and HKUST-1/GO were conducted, and it was found that drug release of HKUST-1/GO was slower, which can be explained by the hydrogen bonding between GO and IBU. It can be concluded
that the addition of GO not only enhances drug loading, but can also achieve a more desirable slow-release of the drug.
研究领域:
材料科学
·
药剂学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2021
·
IF 3.739
Lei He,Lei Wang,Haomiao Zhu,Zhe Wang,Luxia Zhang,Lutao Yang,Yong Dai,Hong Mo,Jun Zhang,Jian Shen
Oilfield wastewater contains a large number of metal ions (such as Ca 2+ and Cu 2+ ). Reinjection in oil wells without treatment would affect oil recovery. To remove Ca 2+ and Cu 2+ ions, we prepared a reusable Fe 3 O 4 /GO-COOH nanoadsorbent by the magnetization and carboxylation of graphene oxide (GO). The Ca 2+ and Cu 2+ removal percents of the nanoadsorbent reached 78.4% and 51% at 60 min, respectively. After five adsorption/desorption cycles, the nanoadsorbent retained high recovery rates (82.1% for Ca 2+ and 91.8% for Cu 2+ ) and removal percents (72.3% for Ca 2+ and 49.33% for Cu 2+ ). In the simulated indoor oil recovery test, oilfield wastewater treated with Fe 3 O 4 /GO-COOH could enhance oil recovery (EOR) by 11.0% compared with untreated oilfield wastewater. The novel magnetic nanoadsorbent could not only adsorb metal ions in oilfield wastewater effectively to enhance oil recovery (EOR) but could also be quickly recycled and reused, which shows promising application prospects in oil exploitation.
研究领域:
环境科学
·
材料科学
·
石油工程
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Lili Xu,Renmin Liu,Zhaofang Li,Moju Li,Min Zhao,Yingjie Li,Guiyue Hou,Aifeng Li,Hongbo Suo
In this study, imidazolium-based ionic liquids (ILs) were used to modify carboxymethyl cellulose-coated Fe3O4 nanoparticles with graphene oxide deposition (ILs-MCMC/GO). The prepared composites were characterized and used to immobilize lipase. The prepared biocatalyst (PPL-ILs-MCMC/GO) exhibited higher activity, which was 3.55-fold that of free lipase and 1.41-fold that of immobilized lipase without IL (PPL-MCMC/GO). After reusing 10 times, the residual activity of PPL-ILs-MCMC/GO was 91.3%, which was higher than those of PPL-MCMC/GO (83.6%) and PPL-MCMC (73.6%). In addition, using kinetic analysis, we showed that the affinity between PPL-ILs-MCMC/GO and the substrate was improved. The secondary structures of free and immobilized lipase were analyzed to explain the mechanism by which the performance of PPL-ILs-MCMC/GO was improved. The introduction of imidazole-based IL was useful in improving the microenvironment of immobilized lipase. Furthermore, magnetic supports loaded with lipase could be recovered easily.
研究领域:
生物化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2016
·
IF 0
Jian Shu,Yu Song Liao
Poly (diallyl dimethylammonium chloride)-graphene oxide multilayer film (PDDA/GO) was successfully fabricated onto a silicon substrate by a layer-by-layer self-assembly technology. Subsequently, PDDA/GO were thermally reduced to be PDDA/RGO in a vacuum. X-ray photoelectron spectroscopy (XPS) was carried out to investigate the formation and microstructure of multilayer samples, as well as by water contacted angle (WCA). Results indicates that the multilayer film was prepared successfully, and the surface energy of PDDA/RGO is lower than PDDA/GO. nanotribological properties was investigated by an atomic force microscopy (AFM). It was found that the frictional coefficients of PDDA/RGO is better than PDDA/GO. To investigate the micro-tribological behaviors, a ball-on-plate tribometer was adopted. Results show that the layer-by-layer self-assembled multilayer thin film possesses good frictional and anti-wear properties. Therefore, both nanoand micro friction performance of PDDA/RGO behaves better than PDDA/GO. The obtained samples make the further application to be more possible.
研究领域:
材料科学
·
表面工程
·
纳米技术
✓ 已验证
DOI
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 14
·18591-18604
·
IF 2.478
Zhang Shengsheng,Huang Fanglin,Zhong Mingqiang,Fan Ping
Dielectric material is an important material for film capacitors. However, the progress of this material is either impeded by its low dielectric constant, high loss tangent, or insufficient flexibility. In this work, PVA/GO film with alternating layer structure was fabricated by Spin-Coating-Assembly (SCA) method. This alternating layer structure not only benefits forming numerous microscale capacitors which improve ε value a lot, but also helps eliminate perpendicular contact of GO and prevents the formation of conductive pathways. Thus, compared with pure PVA, significantly increased dielectric permittivity and a low loss tangent were simultaneously observed for the PVA/GO film. The ratio of dielectric permittivity to loss tangent increased from 68 to 165. These films might be potential flexible dielectric materials for advanced electrical devices such as embedded capacitors.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Mengyao Li,Ping Wu,Xiaoli Han,Shanshan Shi,Shiping Zhang,Li Wang,Min Xu,Xiulan Huai
Adsorption-based thermal energy conversion systems offer a sustainable solution for space heating and cooling applications. However, due to the limited performance of solid adsorbents, the large-scale application of this technology still requires further research. To address this challenge, we developed a composite adsorbent by integrating a graphene oxide (GO)-modified metal-organic framework (MIL-101(Cr)) with LiCl. The material was characterized using a variety of techniques to assess its improvement in three areas: water adsorption performance, heat propagation rate and stability. The synthesized material was systematically characterized to evaluate three key performance parameters: water adsorption capacity, thermal conductivity, and cyclic stability. The optimized composite LMG-3 (90 wt% LiCl) exhibits a tenfold increase in water absorption capacity compared to MIL-101(Cr)@GO at P/P 0 = 0.3. The introduction of GO significantly increases the heat diffusion coefficient, and the material exhibits excellent cyclic stability and inhibits salt deliquescence, demonstrating its potential for adsorptive thermal storage applications.
研究领域:
材料科学
·
能源工程
✓ 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）