JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 134
·期 7
·
IF 1.866
Jie-Ping Fan,Dan-Dan Liao,Yan-Long Xie,Bing Zheng,Jia-Xin Yu,Ya-Hui Cao,Xue-Hong Zhang,Hai-Long Peng
A composite material (MIP@Fe 3 O 4 @GO) based on molecular imprinted polymer (MIP), superparamagnetic Fe 3 O 4 particles and graphene oxide (GO) was prepared by the chemical coprecipitation method, and used to simultaneously separate and enrich two alkaloids (evodiamine and rutaecarpine) in the extract of Evodiae fructus . The as-prepared MIP@Fe 3 O 4 @GO was characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM). The adsorption kinetics, isotherms, competitive adsorption, and reusability of MIP@Fe 3 O 4 @GO were also investigated. The results revealed that MIP@Fe 3 O 4 @GO was sensitive to the magnetic field and could be easily separated using an external magnet; MIP@Fe 3 O 4 @GO showed good recognition selectivity, as well as simultaneous enrichment and separation abilities for evodiamine and rutaecarpine in the extract of E. fructus with satisfactory recoveries. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44465.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xiaoqian Sun,Rongjie Li,Yilin Wang,Kaijia Liu,Yuhui Qiu,Kunxiang Deng,Yixi Xie,Pengcheng Zhao,Junjie Fei
The remarkable pharmacological activities of flavonoids and their effects on human health have prompted many studies. To solve the problem that flavonoids are difficult to be accurately quantified, a novel photoelectrochemical (PEC) sensor based on CdIn 2 S 4 /b-TiO 2 /GO was created to detect the baicalein (BCA). By using physical ultrasonic compounding, a straightforward and effective CdIn 2 S 4 /b-TiO 2 /GO composite was created. The composite’s photoelectric effect was 14 times greater than that of the individual material. When BCA was present, a flavonoid-TiO 2 nanoconjugate was formed based on the interaction between b-TiO 2 and BCA. This interaction prevented the formation and decreased charge transfer of photoporous holes, resulting in a significant decline in photocurrent. Therefore, the PEC sensor based on the change of the electrode surface state can realize the sensitive detection of BCA. The PEC sensor has a wide linear detection range of 1 nM − 30 μM with a limit of detection of 0.5 nM. In addition, the sensor has exhibited excellent accuracy in detecting BCA in the roots and leaves of Scutellaria baicalensis, which can be used for the detection of actual samples.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2016
·
IF 3.926
Lu Huang,Haiyun Zhai,Guohuan Liang,Zihao Su,Kaisong Yuan,Guoqiang Lu,Yufang Pan
An analytical technique for selective, simultaneous determination of bisphenol A (BPA) and nonyl phenol (NP) in fish samples was established by a solid-phase extraction chip integrated with array columns of dual-molecularly imprinted polymer-coated silver-modified graphene oxide (Ag/GO-dual-MISPE-chip). Ag/GO dual-molecularly imprinted polymers (Ag/GO-dual-MIPs) were synthesized by in situ polymerization using Ag/GO as the supporting matrix which extracted templates easily. The affinity and specificity on the Ag/GO-dual-MISPE monolithic column were also investigated. The array extraction chip showed high binding capacity and selectivity to BPA and NP, with the imprinting factors of BPA and NP reaching 2.6 and 2.9, respectively. Ag/GO-dual-MIPs were characterized by scanning electron microscopy and Fourier transform-infrared (FT-IR) spectroscopy. As Low as 2.4 ng L −1 BPA and 4.7 ng L −1 NP were detected by high performance liquid chromatography coupled with fluorescence detection. The enrichment factor was 113-fold for BPA and 92-fold for NP. Therefore, the chip-based array columns are feasibly applicable to facile extraction of BPA and NP and effective clean-up of impurities in fish samples.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Kiran Gupta,Baoling Yuan,Chen Chen,Naresh Varnakavi,Ming-Lai Fu
Novel composite of immobilized layered K 2x Mn x Sn 3−x S 6 (x = 0.5–0.95) (KMS-1) on the surface of reduced graphene oxide (r-GO), KMS-1/r-GO (KGO), has been fabricated by employing hydrothermal technique and used for the removal of radioactive Cs + and Sr 2+ ions from aqueous solutions. The KGO was characterized thoroughly with different characteristic techniques and found that the laminar KMS-1 nanoplate were immobilized on the surface of r-GO nanosheets, forming a highly porous stacked structure. Batch studies have been done for obtaining optimal experimental parameters and investigating the effect of adsorption time, initial concentration of pollutant, pH of solution, temperature, and competing anions on the removal properties. At room temperature, the maximum adsorption capacity of KGO was 338.18 mg·g −1 and 220.12 mg·g −1 for both Cs + and Sr 2+ , respectively. Langmuir isotherm and pseudo-second-order kinetic models were fitted well with experimental data of removed Cs + and Sr 2+ . Adsorption showed good selectivity of composite towards Cs + and Sr 2+ in the presence of co-existing ions (Ca 2+ and Mg 2+ ). The proposed adsorption mechanism involved ion exchange through the presence of K + ions in KMS-1 and formation of surface ionic interactions between r-GO and ions through COO X or S X (X denoted Cs + and Sr 2+ ). This study highlighted the facile applicability of novel material KGO and could be used as a new adsorbent for the removal of radioactive ions.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yiling He,Jingcheng Wu,Xianmin Gong,Peichuan Mo,Tianmi Zhang,Quangang Chen,Yi He
Graphene oxide (GO)-based membranes have been widely used in the field of wastewater treatment by virtue of their unique separation mechanism, but their practical applications are severely constrained by the problems of selectivity, permeability and membrane contamination. In this study, a novel nanofiltration membrane structure was innovatively designed using a dual strategy of cross-linking and intercalation, with a view to enhancing the membrane separation performance and service life. Modification of GO nanosheets with PEI molecules (polyethyleneimine) at room temperature improved the hydrophilicity of the nanosheets and resulted in a hydrophilic membrane surface and smooth interlayer channels. A novel flower-like type 2 %SnS 2 /Bi 2 WO 6 p-n heterojunction synthesized via hydrothermal and ultrasonic-thermal treatment techniques was embedded in a composite membrane, and the M2 membrane with the best performance was prepared (2 %SnS 2 /Bi 2 WO 6 : PEI@GO = 0.6: 1). The M2 membrane has 12 times (120.9 L m −2 h −1 ) the pure water flux of the GO membrane and retains more than 99 % of the MB molecules. Owing to the stabilization of the membrane structure by chemical crosslinking, after up to 130 h of cycling experiments (photocatalytic cleaning of the membrane surface was performed every 10 h.), the rejection rate of MB was still higher than 98 %. Therefore, for the preparation of high-performance GO-based membranes, this synergistic strategy provides a simple and effective method.
✓ 已验证
产品关联
DOI
高影响因子
OPTICS EXPRESS
·
2019
·Vol. 27
·期 18
·25091-25106
·
IF 3.561
Xu Gao,Hao Zhang,Xiangyu Fan,Chao Zhang,Chao Zhang,Yang Sun,Chundong Liu,Zhen Li,Shouzhen Jiang,Baoyuan Man,Cheng Yang,Cheng Yang
We report a structure to form a hybrid system in which a mesh is sandwiched between Au nanoparticles (AuNPs) and Ag nanoparticles (AgNPs). This self-assembly method uses smaller and denser AgNPs “hot spots” that are spin-coated on a AuNPs@GO mesh nanostructure formed by the reaction of GO@MoS2 and HAuCl4 to form AuNPs@GO mesh@AgNPs SERS substrates. Sub-40-nm mesh and 10-nm gaps ensure the landing sites and spacing of the AgNPs. Consequently, the design integrates the strong plasmonic effects of AgNPs and AuNPs with the biological compatibility of the GO mesh. Crystal violet (CV) as low as 10−15 M can be detected, which confirms the ultrahigh sensitivity of AuNPs@GO mesh@AgNPs. Furthermore, the reproducibility, stability, and finite-difference time-domain (FDTD) simulations confirm the value of this SERS substrate. This material can be used for label-free DNA detection, and the AuNPs@GO mesh@AgNPs substrate facilitated single-molecule DNA detection limits.
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yuanyuan Tang,Lili Zhang,Xinxin Ge,Yingying Zhang,Yan Liu,Juncheng Wang
Heavy metal ion contamination poses a significant threat to both our environment and human health. Consequently, there is a need for proficient and environmentally friendly remediation techniques to tackle this issue. Among various strategies, membrane-based separation using graphene oxide (GO) laminate membranes has emerged as a promising solution. However, traditional GO membranes have low water permeance, poor selectivity, structural instability, and inconsistent layer spacing. In this study, we cross-linked GO with polydopamine/polyethyleneimine (DA/PEI) using a mild one-step strategy to prepare a GO@DA/PEI membrane for heavy metal ion removal and evaluated the effect of cross-linking duration on the interlayer structure, membrane properties, and heavy metal ion removal performance. The successful formation of a cross-linked network between DA/PEI and GO was proven by various characterization methods. Compared with previously reported GO-based membranes, the prepared GO@DA/PEI 40 membrane exhibited excellent performance, including a peak pure water flux of 326.7 L/m 2 h and ion rejection of 99.6 % for Cu 2+ , 93.5 % for Pb 2+ , and 96.6 % for Zn 2+ , thereby overcoming the conventional trade-off” effect. The mechanism for the high flux was discussed. The cross-linking reaction between the oxygen-containing functional groups at the edges and basal planes of the GO flakes and DA/PEI were crucial to the high flux. In addition, the GO@DA/PEI 40 membrane had excellent anti-fouling performance in the presence of humic acid and long-term stability under different conditions. Overall, the GO@DA/PEI membrane has good potential for heavy metal ion removal.
✓ 已验证
DOI
高影响因子
Materials
·
2018
·Vol. 11
·期 9
·1756
·
IF 2.467
Mi Zhang,Yu Gao,Yixing Zhan,Xiaoqing Ding,Ming Wang,Xinlong Wang
Degradable, flame retardant, and flexible nanocomposite films with low dielectric constant were prepared with poly (lactic acid) (PLA), nano ZIF-8@GO, and degradable flame-retardant resorcinol di(phenyl phosphate) (RDP). The SEM results of the fractured surfaces indicated that ZIF-8@GO and RDP were dispersed uniformly in the PLA matrix. The prepared films had good mechanical properties and the tensile strength of the film with 1.5 wt% of ZIF-8@GO was increased to 48.2 MPa, compared with 38.5 MPa of pure PLA. Meanwhile, the nanocomposite films were flexible due to the toughing effect of RDP. Moreover, above 27.0% of limited oxygen index (LOI) and a VTM-0 rating were achieved for the nanocomposite films. The effects of nano ZIF-8@GO hybrids and RDP on the dielectric properties were investigated, and the results showed that ZIF-8@GO and RDP were beneficial in reducing the dielectric constant and dielectric loss of the nanocomposites.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Tingting Yu,Bing Yang,Rong Zhang,Chenyu Yang,Arramel,Jizhou Jiang
The upsurge of interest in the emergence of photocatalytic fuel cell systems (PFC) presents an efficient and environmentally friendly approach to wastewater treatment. In this work, a Z-scheme coupled with an S-scheme heterojunction electrode was used in the PFC, utilizing TiO 2 /GO/g-C 3 N 4 as the photoanode and BiOAc 1– x Br x /BiOBr as the photocathode. We systematically align the band structures between the anode and cathode, which facilitates the electron transfer between the electrodes. Our attempt successfully demonstrates that collaborative power generation facilitates the high efficiency of tetracycline hydrochloride (TC) degradation at both electrodes. The photoanode achieved a 94.87 % degradation rate for TC, while the photocathode exhibited a 96.33 % degradation rate after 2 h, surpassing pristine BiOBr and BiOAc by factors of ∼5.3 and ∼3.8, respectively. Furthermore, this work proposed a mechanism for electron generation, transport, and pollutant degradation mechanism in the PFC. Intermediate substances generated during the degradation of TC were analyzed through high-performance liquid chromatography-mass spectrometry (HPLC-MS) and ultraviolet photoelectron spectroscopy (UPS), while the optimal degradation pathway was confirmed using density functional theory (DFT). The findings of this work establish the feasibility of efficiently degrading pollutants through PFC treatment, introducing a novel system where various heterojunctions in bipolar materials collaborate with photocatalysis to effectively generate electricity and enhance pollutant removal.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Ximin Chen,Hongshan Jia,Yingqing Zhan,Fei Zhu,Xinyue Duan,Jie Liu,Lingli Li,Yinlong Li
Due to the intricate components of wastewater and physical stacking of graphene oxide (GO), the current GO membranes exhibit the fatal defects of low porosity and poor anti-fouling ability. Herein, a three dimensional (3D) FeCo-PBA@GO functional microsphere was constructed via anchoring GO nanosheets onto hard template of 3D polymethyl methacrylate (PMMA) microsphere driven by hydrogen bond and van der Waals force. On this basis, the Prussian blue analogs nanocrystals (FeCo-PBA) grew in situ on such functional microsphere and further assembled onto porous polyacrylonitrile (PAN) fiber mat through the tannic acid assisted spraying technique, resulting in highly permeable and photocatalytic self-cleaning FeCo-PBA@GO/PAN fibrous composite membrane. Interestingly, the unique 3D nanostructure of FeCo-PBA@GO microsphere arranging on membrane surface effectively prevented the dense physical stacking of GO nanosheets and increased the oil repellence property, thereby regulating the water channel and breaking through permeability limitation of membrane. As a result, the composite membrane exhibited superior separation fluxes (˃3029 L m −2 h −1 ) for different oil/water (O/W) emulsions, with rejection rate above 99.0 %. Owing to rich active sites and enhanced electron/mass transport property of FeCo-PBA functional layer, the composite membrane could effectively degrade various dyes by peroxymonosulfate (PMS) activation, with the degradation efficiency of 93.1–96.9 % within 40 min and demonstrated favorable antifouling and photocatalytic self-cleaning ability after cycling separation of O/W emulsion. In addition, the generated multiple reactive oxygen species and photocatalytic mechanism were proposed. This work provides a versatile pathway to prepare multifunctional GO advanced membranes for large-scale treatment of complex emulsified oily wastewater.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Shan Cheng,Nan Li,Bing Wang,Fangyuan Hu,Lishuai Zong,Haoyue Hao,Qingguang Bao,Cheng Liu,Yousi Chen,Xigao Jian
A GO-SiO 2 hybrid interface layer was prepared by electrostatic adsorption to synergistically improve the weak interface bonding between carbon fiber (CF) and poly(phthalazinone ether ketone) (PPEK). FTIR, Raman and XPS confirmed that GO-SiO 2 interface layer is constructed on CF surface. SEM and AFM indicated that the synergistic effect of GO-SiO 2 could obviously improve the CF surface roughness. CF-GO-SiO 2 /PPEK composite exhibits excellent interlaminar shear strength (84.2 MPa), flexural strength (1620 MPa), storage modulus (132.9 GPa) and T g (285 °C). The GO-SiO 2 interface layer improves the mechanical interlocking and wettability between CF and PPEK, and the failure mechanism of the composite changes from interfacial debonding for Untreated CF/PPEK composite to matrix cohesive destruction and fiber breakage for CF-GO-SiO 2 /PPEK composite. Moreover, the layer is beneficial to the hydrothermal ageing resistance of the composite. This study provides a promising strategy for improving the interfacial properties of advanced thermoplastic composites.
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Hailong Gong,Xiaofeng Hou,Binrong Li,Siyu Shen,Chen Wang,Qinqin Ma,Tingting Liu,Xuedong Wang
The level of total antioxidant capacity (TAC) reflects the overall ability of food to resist oxidative damage, maintain quality and nutritional stability. In this work, we pioneered a Co Ni alloy-confined N-doped carbon nanozyme (CoNi@CNT-N/GO) with a self-cascade catalysis. Compared to other nanozymes, the synergistic effect of OXD and POD realized self-sustained generation of H 2 O 2 , eliminating the need of exogenous addition, and further decomposition of H 2 O 2 into ·OH and oxidizes colorless 3,3′,5,5′- tetramethylbenzidine (TMB) to blue oxTMB as an efficient catalyst. The integration of multiple components and the built-in unique mechanism enhance bienzymatic activity. A “Thing Identify” APP was utilized to construct a smartphone-based visualization platform, demonstrating satisfactory linearity (0.01–1.2 mM) and low detection limit (3.3 μM) in TAC detection of real-world foods. This platform yielded data comparable to those from commercially colorimetric kits. Overall, it proposes a novel idea for engineering multi-functional and non-additional H 2 O 2 nanozymes in on-site food-quality monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）