Journal of Coatings Technology and Research
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2022
·Vol. 19
·期 2
·625-642
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IF 2.339
Wang Meng,Xiao Fengjuan,Kong Longfei,yin Guyu,Ni Changbiao,Zhang Xuefei,Qian Cheng,Yan Lu,Li Mengya,Li Jun,Zhou Kaixi
An advanced long-term active corrosion protection coating for carbon steel was proposed using poly(aniline-aminosalicylic acid) nanofiber (PACA-f) covalently linked with cetyltrimethyl ammonium bromide (CTAB)-modified graphene oxide (CTGO). The proton-doped PACA-f functionalized CTGO (PACA-f/CTGO) exhibits excellent hydrophobicity and outstanding water resistance in waterborne epoxy polymer (WEP) coatings and better compatibility with WEP due to the formation of organic–inorganic networks. PACA-f/CTGO composite coating has a self-repairing function and shows superior corrosion resistance on Q235 steel. The surface-corrosion inhibition of PACA-f/CTGO on steel was investigated by molecular dynamics simulation(MD) which confirmed the chemical adsorption of the PACA-f/CTGO on the steel surface. The excellent water resistance and anticorrosion property of PACA-f/CTGO are ascribed to the high hydrophobicity of the hybrid coatings, the formation of intelligent passivation layer after the corrosive medium invading, and the barrier performance of CTGO.
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CARBON
·
2022
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IF 11.307
Guangyu Wang,Zehua Zhou,Qinghan Hu,Xiangru Shi,Xin Zhang,Kaicheng Zhang,Lintao Wu
Sealing treatment is an effective method to prolong the service life of Fe-based amorphous coatings for steel substrates. Common sealants always have the disadvantages of releasing amounts of volatile organic compounds (VOC) and are expensive, prompting researchers to develop an eco-friendly, low cost and high-performance sealant. However, their simultaneous improvement is restricted by some inevitable contradictions among them. Herein, natural rosin was introduced as a sealing material and an eco-friendly natural rosin-based SiO 2 –NH 2 @GO hybrid sealant was successfully prepared by the sol-gel method. In addition, the functional nanocomposite SiO 2 –NH 2 @GO was added to the hybrid sealant system to achieve the purpose of extending the service life of the sealant. The filling efficiency, adhesion, thermal stability and long-term corrosion resistance of hybrid sealants were investigated. The study showed that the adhesion of the hybrid sealant to the Fe-based amorphous coating was improved by 10.59% after adding the nanocomposite. The hybrid sealant reaches maximum thermal decomposition at 414.3 °C. The corrosion current density ( i corr ) of the sample NSG-0.5‰ still decreased by about two orders of magnitude after immersion for 672 h (0#, i corr = 1.39 × 10 −4 A/cm 2 ; NSG-0.5‰, i corr = 1.51 × 10 −6 A/cm 2 ). Full immersion experiments explore the failure process of hybrid sealants, where corrosion always tends to propagate with unmelted particles. The hybrid sealant prepared has the advantages of being eco-friendly and low cost, and provides a specific preparation process, which provides a new direction for the development of the sealant.
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JOURNAL OF NANOBIOTECHNOLOGY
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2021
·Vol. 19
·期 1
·1-19
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IF 10.435
Guo Weihong,Chen Zhian,Feng Xiaoli,Shen Guodong,Huang Huilin,Liang Yanrui,Zhao Bingxia,Li Guoxin,Hu Yanfeng
Background Paclitaxel (PTX) has been suggested to be a promising front-line drug for gastric cancer (GC), while P-glycoprotein (P-gp) could lead to drug resistance by pumping PTX out of GC cells. Consequently, it might be a hopeful way to combat drug resistance by inhibiting the out-pumping function of P-gp.Results In this study, we developed a drug delivery system incorporating PTX onto polyethylene glycol (PEG)-modified and oxidized sodium alginate (OSA)-functionalized graphene oxide (GO) nanosheets (NSs), called PTX@GO-PEG-OSA. Owing to pH/thermal-sensitive drug release properties, PTX@GO-PEG-OSA could induced more obvious antitumor effects on GC, compared to free PTX. With near infrared (NIR)-irradiation, PTX@GO-PEG-OSA could generate excessive reactive oxygen species (ROS), attack mitochondrial respiratory chain complex enzyme, reduce adenosine-triphosphate (ATP) supplement for P-gp, and effectively inhibit P-gp’s efflux pump function. Since that, PTX@GO-PEG-OSA achieved better therapeutic effect on PTX-resistant GC without evident toxicity.Conclusion sIn conclusion, PTX@GO-PEG-OSA could serve as a desirable strategy to reverse PTX’s resistance, combined with chemo/photothermal/photodynamic therapy.Graphic Abstract
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
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IF 6.182
Huizhen Deng,Juanjuan Yin,Jinming Ma,Jingxin Zhou,Lexin Zhang,Lili Gao,Tifeng Jiao
A novel catalyst composed of Ag 3 PO 4 bridged by Ni/Ti LDH-graphene heterojunction structure was successfully prepared by a simple in-situ deposition method, which has excellent catalytic performance for 4-NP and 2-NA. Various characterizations to the samples such as XRD, SEM, TEM, STEM-EDS, XPS, TG–DSC, and UV–vis DRS were adopted. Because the ternary structure is mixed with each other to form more heterojunctions and higher specific surface area, the ternary composite Ag 3 PO 4 /Ni-Ti LDH/GO has excellent catalytic and cycle performance. Compared to the precursors Ag 3 PO 4 /GO and Ni-Ti LDH/GO, the finally as-obtained nanocomposite Ag 3 PO 4 /Ni-Ti LDH/GO degraded 4-NP and 2-NA solutions represented more dominant degradation efficiency. In addition, the pseudo-first-order rate constants of the composite catalyst for 4-NP and 2-NA are 0.178 min −1 and 0.089 min −1 , respectively. The complex and irregular surfaces of Ni-Ti LDH/GO provided an ideal carrier with abundant active sites for in-situ depositing and stabilizing of Ag 3 PO 4 NPs, formed the Ag 3 PO 4 /Ni-Ti LDH/GO hybrid possessed an acceptable catalytic performance on the degradation of azo dyes, which could be applied in the efficient treatment of wastewater from industries.
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ACS Applied Materials & Interfaces
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2020
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IF 8.758
Jingjing Wang,Xiaoyan Lian,Qilong Yan,Dayuan Gao,Fengqi Zhao,Kangzhen Xu
An interesting Cu–Co/GO composite with special high organic content was accidentally fabricated for the first time via a one-pot solvothermal method in the mixed solvent of isopropanol and glycerol. The Cu–Co/GO composite was calcined separately in three different atmospheres (air, nitrogen, and argon) and further investigated by a series of characterization techniques. The results indicate that the spinel phase nano-CuCo2O4 composite, nanometal oxides (CuO and CoO), and nanometal mixture of Cu and Co were unexpectedly formed after calcination in air, N2, and Ar atmospheres, respectively, and the possible reaction mechanism was discussed. The specific mass losses of the Cu–Co/GO composite calcined in air, N2, and Ar atmospheres were 28.14 %, 21.68 %, and 23.76 %, respectively. The catalytic decomposition performances of the as-prepared samples for cyclotrimethylenetrinitramine (RDX) and the mixture of nitrocellulose (NC) and RDX (NC + RDX) were investigated and compared via DSC method, and the results demonstrate that Cu–Co/GO composites obviously decrease the thermal decomposition temperature of RDX from 242.3 to 236.5 (before calcination), 238.6 (air), 235.8 (N2), and 228.6 °C (Ar), respectively. Cu–Co/GO(Ar) composite exhibits the best catalytic decomposition performance among all samples, which makes the decomposition temperature of RDX and NC + RDX decrease by 13.7 and 4.9 °C and the apparent activation energy of decomposition for RDX decrease by 110.1 kJ/mol. The enhanced catalytic performance of Cu–Co/GO(Ar) composite could be attributed to the smaller particle size, better crystallinity, and specific well-dispersed metal atoms, whereas the Cu–Co/GO(air) composite after air calcination presents a bad catalytic performance due to the removal of GO.
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POLYMER COMPOSITES
·
2023
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IF 5.2
Xiaoqian Li,Xiaohua Jia,Jin Yang,Yong Li,Hongliang Lin,Haojie Song
Existing research on interfacial interactions of recyclable carbon fiber reinforced poly(hexahydrotriazine) (PHT) composites has mainly focused on the study of reinforcing fibers, ignoring the wide range of applications of matrix in advanced friction materials. Herein, polyhedral ZIF-8 was grown in-situ on the GO surface (named as ZIF-8@GO) to improve the load-bearing capacity of GO nanosheets. The ZIF-8@GO with zinc ions and imidazole ions were embedded as interlaminar reinforcement into matrix to construct a non-covalent cation-π interaction with indole-based PHT (In-PHT) matrix, which significantly enhanced the toughness and tensile strength (reached 215.5 MPa) of composites. With the incorporation of armor-shaped ZIF-8@GO reinforcement, compared with the composite without ZIF-8@GO, the wear track width was significantly decreased by 50%. Moreover, the worn surface lubricated by this composite exhibited efficient self-healing property due to the introduction of the polyethylene wax (PEW), and the healed average friction coefficient showed slight changes. Extensive analyses verify that the ZIF-8@GO structure and cation-π interactions across multiscale interfaces can enhance both mechanical strength and wear resistance of recyclable carbon fiber reinforced In-PHT composites (In-PHT-CFRPs). Highlights ZIF-8@GO was embedded as interlayer reinforcement to improve wear resistance. Cation-π interaction across interface enhances interface carrying capacity. Due to strong cation-π bonding, IPEZGC exhibits outstanding tensile strength. PEW was embedded as healing agent to obtain self-healing property.
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Membranes
·
2023
·Vol. 13
·期 5
·536
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IF 4.2
Chunxiao Ding,Hong Qi
Pristine graphene oxide (GO)-based membranes have proven promising for molecular and ion separation owing to efficient molecular transport nanochannels, but their separation ability in an aqueous environment is limited by the natural swelling tendency of GO. To obtain a novel membrane with anti-swelling behavior and remarkable desalination capability, we used the Al2O3tubular membrane with an average pore size of 20 nm as the substrate and fabricated several GO nanofiltration ceramic membranes with different interlayer structures and surface charges by fine-tuning the pH of the GO-EDA membrane-forming suspension (pH = 7, 9, 11). The resultant membranes could maintain desalination stability, whether immersed in water for 680 h or operated under a high-pressure environment. When the pH of the membrane-forming suspension was 11, the prepared GE-11 membrane showed a rejection of 91.5% (measured at 5 bar) towards 1 mM Na2SO4after soaking in water for 680 h. An increase in the transmembrane pressure to 20 bar resulted in an increase in the rejection towards the 1 mM Na2SO4solution to 96.3%, and an increase in the permeance to 3.7 L·m−2·h−1·bar−1. The proposed strategy in varying charge repulsion is beneficial to the future development of GO-derived nanofiltration ceramic membranes.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Jinru Lin,Pengfei Zhu,Mei Liu,Ming Duan,Han Lu,Zhaoxin Huang
An all-solid-state Z-scheme Bi 4 O 5 I 2 /GO/Bi 2 Sn 2 O 7 (BI41/1.5GO/BS41) ternary heterojunction was constructed by hydrothermal-ultrasonic assisted aqueous precipitation-heat treatment method. Taking the degradation effect of tetracycline hydrochloride (TC-HCl) as a reference, the BI41/1.5GO/BS41 composite catalyst exhibits the best photocatalytic performance, and its photocatalytic reaction rate constant is 3.82 that of Bi 2 Sn 2 O 7 . When the dosage of BI41/1.5GO/BS41 was 0.8 g/L, the degradation rate of TC-HCl solution with initial concentration of 15 mg/L was 90.31 % (pH=8) under visible light irradiation for 120 min. Moreover, the BI41/1.5GO/BS41 also has excellent salt tolerance, universality and recycling stability. The free radical capture experiments and electron paramagnetic resonance (EPR) tests found that •O 2 and h + were the main active substances for photocatalytic degradation of TC-HCl. The characterization results show that the improvement of photocatalytic performance of BI41/1.5GO/BS41 is due to the successful construction of all-solid-state Z-scheme heterojunction with graphene oxide (GO) as an electron transport medium, which not only reduces the transfer resistance of photogenerated electrons but also improves the separation efficiency of photogenerated carriers. Finally, the TC-HCl solution after visible light degradation was detected by the liquid chromatography mass spectrometry (LC-MS), and the possible intermediate products and degradation pathways were speculated. This work provides a new perspective on the application of all-solid-state Z-scheme heterojunction photocatalysts to environmental remediation.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Mengbo Wu,Qingrong Zheng
Enhancing the storage capacity of hydrogen on MOFs and making it suitable for the marine environment are crucial to its onboard application as a hydrogen storage medium. Development of the storage medium was based on the density of hydrogen contained within the storage system equipped on a typical fuel cell powered ship. The researches conducted include density functional theory (DFT) calculations and experiments, which were directed to evaluate the effect of incorporating graphene oxide (GO) on enhancing the storage performance of hydrogen on ZIF-8. DFT calculations were performed to determine adsorption energies between the GO@ZIF-8 composites and hydrogen molecules, the reduced density gradient (RDG) scatter plot and isosurface map analysis were then employed to define the interaction mechanism between the GO and ZIF-8 as well as the GO@ZIF-8 composites and hydrogen molecules. Precipitation was employed at ambient temperature to synthesize the ZIF-8 sample and GO@ZIF-8 composites, which were performed the tests further for analyzing adsorption equilibrium as well as the performances of cycling and hydro-stability. Results show that the interaction between the GO and ZIF-8 as well as the GO@ZIF-8 composites and hydrogen molecules can be ascribed to the van der Waals force, and the interaction can be enhanced by incorporating a suitable amount of GO. Within the range 0–8 wt% amount of GO incorporated, the sample added by 2 wt% GO (GO-2@ZIF-8) had a more preferable structure for hydrogen adsorption, and the isosteric heat of hydrogen adsorption on this sample is larger than that on the ZIF-8. It also shows that the incorporation brought about the enhancement on the cycling performance at 77.15 K within 0–5 MPa as well as on the hydro-stability of the sample. It suggests that the composite prepared by incorporating ZIF-8 with GO is a promising medium for on board hydrogen storage.
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JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Xiao Jun Xu,Han Zeng,Mi Zhang,Bao Chen Han
Graphene oxide is covalently tethered to porphyrin derivative to prepare carbon based nano-material with photo-sensitive group modification as bio-molecule accommodation matrix. Graphene oxide with porphyrin derivative tailoring is proposed to fabricate Laccase-based electrode via a variety of mutual interactions including the competitive coordination. The microscopic, spectrometric, and electrochemical techniques are proposed to explore the impacts of the mutual interactions between incorporated Laccase and components of graphene oxide-photosensitive group assembly on the photo-electro-catalytic effect of such dual aggregation with enzyme entrapment . The novel intermediate species with distinguished spectroscopic and electrochemical idiosyncrasies could be engendered from the binding of Laccase with the porphyrin derivative. The coordination of enzyme with hetero-aromatic group would not decrease the affinity of immobilized protein to the dissolved substrate: di-oxygen molecules to great extent. The combination would bring on the aggrandizement in the band gap (1.5 eV) of nano-composite with Laccase attachment to depress the utilization efficiency of the external irradiation. The generated intermediate shows the inferior dynamics of charge transportation and unfavorable electrochemical activity. Such competitive ligation of Laccase with hetero-atoms in the porphyrin ring would augment the active energy of the subsequent transformation. In general, the competitive ligation of integrated Laccase molecules with hetero-atoms in porphyrin derivative would not only decrease the charge efficiency for cofactor within redox enzyme (0.065 s −1 ) but also depress the binding-transformation kinetics of active sites in Laccase (i.e. oxygen-binding sites, tri-nuclear copper cluster) .
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Journal of Water Process Engineering
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2025
·
IF 6.7
Lian Yang,Haoran Qiu,Lijun Zhao,Ping Xiao,Guoliang Liu,Jiang Chang,Tianbei Zhang,Shaoxia Yang,Feng Xiao
Polyvinylidene fluoride (PVDF)-N-isopropylacrylamide (NIPAM)-Graphene oxide (GO) (PNG) membrane can dramatically change their microstructure and performance in response to temperature variations in raw water. However, the research on the effect of responsible temperature and individual component in this membrane is lack of clarity. In this study, the permeability-selectivity index was established to determine the responsible temperature of the PNG membrane at 35 °C (PNG-35). And the biofilter effluent from Beijing wastewater reclamation treatment plant was used to investigate the contribution of each composition in the PNG membrane. It can be noticed that with the addition of GO could increase the permeability 23.33 %，while selectivity increased 15.05 %. After the further introduction of NIPAM, subsequently the permeability could increase 82.86 % with the selectivity increased 11.35 %. Finally, comparing the effluent of membrane by EEM, molecular weight distribution and FTICR-MS, the results showed that the humic-like substances were the main contaminants with molecular weights of 142 Da, 397 Da, and 1147 Da, characterized by their sulfur content, hydrophilicity, and negative charged. Humic-like substances were the main contaminants which the sequence of removal was PNG-35 > PNG > PG > PVDF. Apparently, the adding of GO, NIPAM and the responsible temperature could improve the removal of humic-like substances that attributed to the R ir decreased the value at 0.201, 0.092 and 0.041. And charge effects between the contaminants and membrane surface played a significant role under the responsible temperature.
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MICROCHEMICAL JOURNAL
·
2026
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IF 5.2
Fengjun Lv,Jinyi Chen,Shengxi Wu,Ran Sun,Lu Zhang,Yawen Luo,Hao Zhang,Doudou Xu
This study developed a stable, label-free AuNPs/Fe-MOFs/COOH-GO electrochemical immunosensor for the detection of Cytokeratin 19 fragment (CYFRA21-1), a critical biomarker for the early screening and diagnosis of non-small cell lung cancer (NSCLC). The nanocomposites of AuNPs/Fe-MOFs/COOH-GO was synthesized using a combination of hydrothermal synthesis, chemical reduction, and ultrasonic dispersion. AuNPs and COOH-GO components contributed high conductivity and a large specific surface area, which significantly enhanced the sensitivity of the sensor. The three-dimensional mesoporous structure of the Fe-MOFs further improved the stability of the immunosensor. Firstly, our novel nanocomposites was modified by using a glassy carbon electrode (GCE). CYFRA21-1 antibodies were then immobilized on the modified surface via interactions with thiol and carboxyl groups present on the nanomaterial. Bovine serum albumin (BSA) was employed to block non-specific binding sites. The constructed immunosensor exhibited a wide detection range for CYFRA21-1 from 1 pg mL −1 to 100,000 pg mL −1 , with a correlation coefficient (R 2 ) of 0.9989 in differential pulse voltammetry, and the limit of detection was defined as 0.35 pg mL −1 . The sensor also demonstrated high sensitivity, excellent specificity, good reproducibility, and remarkable stability, indicating its potent application potential for the early screening and diagnosis of NSCLC.
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