Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Tingting Zhang,Weida Wang,Wenhua Zheng,Wanqi Zhang,Changxiong Zou,Zhuangzhuang Yang,Mengchuan Yuan,Jianhong Han,Weiping Li
Magnetic cerium ferrate nanoparticles, coupled with graphene oxide (GO) hybrids were synthesized via a hydrothermal method. These composite materials acted as catalysts for the degradation of the organic pollutant benzotriazole (BTA) in water using an electrocatalytically coupled ozone process (EOP). Optimal conditions for CeFeO 3 composite GO in BTA removal were determined through experiments, considering parameters such as pH, catalyst dosage, aeration flow rate, current density and inorganic anion concentration. Introducing CeFeO 3 /GO into the EOP at a concentration of 200 mg/L, with a current density of 4 mA·cm −2 and a reaction time of 50 min, results in a 100 % BTA removal rate. Experiments involving the trapping of free radicals evidenced that the system enhances the generation of hydroxyl radicals (•OH), superoxide radicals (•O 2 – ), and singlet oxygen ( 1 O 2 ) active substances during the degradation of BTA. The degradation mechanism of BTA with CeFeO 3 /GO in the EOP system was elucidated through X-ray photoelectron spectroscopy (XPS) and Liquid chromatography-mass spectrometry (IC-MS) analyses of the catalysts before and after the CeFeO 3 /GO-EOP reaction. The reaction energy barrier and electron transfer mechanism of CeFeO 3 /GO adsorption of O 3 and the degradation mechanism of BTA in CeFeO 3 /GO-O 3 were investigated by using density-functional theory (DFT). This study provides a novel perspective on the removal of emerging pollutants, offering valuable insights for future research and environmental remediation strategies.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yuhan Cui,Lijie Zhao,Danfeng He,Jing Sun,Jinyue Yang,Wanxia Tang,Haixia Yu,Chunhua Lou,Wendi Wang,Xinyou Zhang,Huaping Zhao
At present, it is very necessary to select and prepare suitable positive and negative electrode materials to fabricate high-performance asymmetric supercapacitors. Metal–organic frameworks (MOFs) have garnered significant attention in the energy storage field due to their high conductivity. As a branch, the zirconium organic framework (UIO-66) is a promising porous material due to its large specific surface area and abundant Zr centers. Graphene oxide (GO) and MXene are very suitable as substrate materials for conducting an MOF due to their abundant active sites and adjustable interlayer distance. The GO/MXene@NiZrP prepared through an in situ composite of GO and Mxene with the hydrothermal method and calcining method showed excellent electrochemical performance. Compared with the precursor UIO-66, the specific capacitance of the final product GO/MXene@NiZrP increases more than ten times, mainly because of its special layered porous structure, and GO/MXene@NiZrP has a larger specific surface area, pore volume, and surface defects caused by unstable Zr4+ than those of UIO-66. Using GO/MXene@NiZrP as the positive electrode and biochar (BC) as the negative electrode, an asymmetric supercapacitor, BC//GO/MXene@NiZrP, is assembled. After 10,000 cycles at a current density of 10 A g–1, the capacitance retention remains at 83.3%, showing excellent cycle stability.
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RSC Advances
·
2025
·Vol. 15
·期 13
·10310-10318
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IF 4.6
Rui Wu,Xi Song,Yulin Wang,Qiang Zhang
Considering that pesticide residues cause significant harm to health and the environment, it is crucial and urgent to fabricate surface-enhanced Raman scattering (SERS) substrates with high sensitivity to detect pesticide residues. In this study, a three-layer structure of multifunctional Fe3O4/GO/Ag nanoparticles (NPs) as an active substrate for SERS was fabricated and comprehensively characterized through X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), elemental mapping, and X-ray photoelectron spectroscopy (XPS). The active substrate was used to detect thiram pesticide through SERS. Combined with the synergistic effect, Ag NPs and graphene oxide (GO) possessed high-density and ordered hot spots to enhance the electromagnetic field; therefore, signal amplification and fascinating sensitivity were achieved. The lowest concentration of thiram for clear presentation of the peak was 10−12 mol L−1. There was a satisfactory linear relationship, ranging from 10−10 to 10−4 mol L−1, with a low limit of detection, high sensitivity, satisfactory enhancement factor (EF), stability, and repeatability. In addition, Fe3O4/GO/Ag was successfully applied to identify pesticide residues in a practical sample. Furthermore, the enhancement mechanism, including electromagnetic enhancement and chemical reinforcement, is discussed in detail. Fe3O4/GO/Ag is a potential active substrate for SERS and can be applied for rapid detection in the food industry, environmental fields and biomedicine with fascinating sensitivity.
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International Journal of Nanomedicine
·
2024
·
IF 6.6
Ying Yang,Bixia Zhou,Min Li,Yishuai Sun,Xulei Jiang,Xinxin Zhou,Chengjun Hu,Dou Zhang,Hang Luo,Wuyuan Tan,Xinghua Yang,Shaorong Lei
Purpose The treatment of craniofacial bone defects caused by trauma, tumors, and infectious and degenerative diseases is a significant issue in current clinical practice. Following the rapid development of bone tissue engineering (BTE) in the last decade, bioactive scaffolds coupled with multifunctional properties are in high demand with regard to effective therapy for bone defects. Herein, an innovative bone scaffold consisting of GO/Cu nanoderivatives and GelMA-based organic-inorganic hybrids was reported for repairing full-thickness calvarial bone defect.Methods In this study, motivated by the versatile biological functions of nanomaterials and synthetic hydrogels, copper nanoparticle (CuNP)-decorated graphene oxide (GO) nanosheets (GO/Cu) were combined with methacrylated gelatin (GelMA)-based organic-inorganic hybrids to construct porous bone scaffolds that mimic the extracellular matrix (ECM) of bone tissues by photocrosslinking. The material characterizations, in vitro cytocompatibility, macrophage polarization and osteogenesis of the biohybrid hydrogel scaffolds were investigated, and two different animal models (BALB/c mice and SD rats) were established to further confirm the in vivo neovascularization, macrophage recruitment, biocompatibility, biosafety and bone regenerative potential.Results We found that GO/Cu-functionalized GelMA/β-TCP hydrogel scaffolds exhibited evidently promoted osteogenic activities, M2 type macrophage polarization, increased secretion of anti-inflammatory factors and excellent cytocompatibility, with favorable surface characteristics and sustainable release of Cu2+. Additionally, improved neovascularization, macrophage recruitment and tissue integration were found in mice implanted with the bioactive hydrogels. More importantly, the observations of microCT reconstruction and histological analysis in a calvarial bone defect model in rats treated with GO/Cu-incorporated hydrogel scaffolds demonstrated significantly increased bone morphometric values and newly formed bone tissues, indicating accelerated bone healing.Conclusion Taken together, this BTE-based bone repair strategy provides a promising and feasible method for constructing multifunctional GO/Cu nanocomposite-incorporated biohybrid hydrogel scaffolds with facilitated osteogenesis, angiogenesis and immunoregulation in one system, with the optimization of material properties and biosafety, it thereby demonstrates great application potential for correcting craniofacial bone defects in future clinical scenarios.
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高影响因子
WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 8
·1-19
·
IF 3
Ou Qianhui,Xiong Yan,Chen Li,He Deyong,Zhou Chuxiang,Wang Lan
The nanocomposite materials are highly promising candidates for adsorption applications in dyed wastewater due to their distinctive structural properties. In this work, the nanocomposite hybrids of UiO-66@GO were first synthesized by specifically anchoring Zr-based metal organic framework (MOF) of UiO-66 onto graphene oxide (GO) nanolayer through solvothermal method. Then the composite matrix microspheres (CMMs) of UiO-66@GO were subsequently prepared by embedding the obtained UiO-66@GO nanocomposite into sodium alginate (SA) microspheres through self-assembly cross-linking process. Finally, the prepared UiO-66@GO CMMs were applied for the adsorption of organic dye pollutant and showed efficient water purification performance. As a result, the UiO-66@GO CMMs exhibited selective cationic dye adsorption for Rhodamine B (RhB + ). The experimental results revealed that the adsorption kinetics followed by the pseudo-second-order (PSD) model with rate constant k 2 = 0.95 × 10 –3 g mg −1 min −1 , and the thermodynamics followed by the Langmuir model with adsorption capacity of 345.66 mg mg −1 . Notably, the UiO-66@GO CMMs demonstrated excellent adsorption removal of a significant removal efficiency of 98% towards 10 ppm Rh-B and a rapid adsorption response time of ~ 5 min. Meanwhile, the UiO-66@GO CMMs maintained long-term stability with adsorption efficiency > 95% over 30 days and effective reuse with resorption efficiency > 90% using DMF-H₂O as eluent. In this study, SA has served as a porous supporting matrix to immobilize UIO-66@GO nanoparticles, having mitigated issues of aggregation and leaching common to nanoscale adsorbents while improving reusability. The synergistic effect between UIO-66 and GO has further enhanced pollutant adsorption capacity, demonstrating significant potential for dye wastewater treatment applications.
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RSC Advances
·
2025
·Vol. 15
·期 21
·16597-16606
·
IF 4.6
Xiaojing Chen,Jia Li,Caojie Zhao,Wen Zhou,Jin Yang,Qingjun Liu,Wenshuai Jiang
Ion cross-linking is often used to prepare graphene hydrogels, but the effects of different ion introductions on the properties of graphene hydrogels need to be further explored. In this study, graphene oxide (GO) and GO@MXene non-spherical hydrogels were prepared by introducing different ions, and their adsorption effects on methylene blue (MB) were discussed to determine their feasibility in water treatment. The adsorption efficiencies were significantly variable because the introduction of different ions had different effects on the internal structure and molding process of the hydrogels. The GO and GO@MXene hydrogels crosslinked with Ca2+ demonstrated superior MB adsorption performance compared to those prepared with K+ and Al3+, achieving 85.2% and 85.8% MB removal efficiencies within 9 hours, respectively. Interestingly, the morphology of the hydrogel can be changed by adjusting the drop height, which in turn affects the MB adsorption. The results showed that hydrogels had faster MB removal by preparing them from a higher height (3.5 cm). The results demonstrated that hydrogels prepared from a higher droplet fall height (3.5 cm) exhibited accelerated MB removal, with a 10–20% enhancement in removal efficiency. In addition, the effects of pH and contact time on the adsorption performance of the hydrogels were investigated. The results showed that the best removal effect was achieved under neutral conditions, and the adsorption process was consistent with the pseudo-quadratic kinetic model (R2 > 0.97). In addition, we found that the introduction of MXene enhanced the water stability of the hydrogels, which increased with the metal ion valence number. Furthermore, our study demonstrated that Ca2+-crosslinked GO and GO@MXene hydrogels exhibit excellent selective adsorption of cationic dyes, achieving MB removal efficiencies of 96.6% and 98.3% in mixed dye systems, respectively. This study not only confirms that the introduction of ions can affect the properties of hydrogels by modulating their morphology, but also provides potential candidates for MB adsorption.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Qianfang Sun,Bingbing Lai,Xiaoyu Wang,Bo Dai,Xuejun Liu,Wenjing Lou
Hydrogels, owing to their outstanding hydrophilicity and remarkable ability to mitigate creep and leakage issues, serve as ideal lubricants. The introduction of nanomaterials such as MXene and graphene oxide (GO) can further enhance the mechanical strength and tribological properties of hydrogels. In this study, MXene/GO-PVA composite hydrogel lubricants were prepared by incorporating the two nanomaterials of MXene and GO into the PVA hydrogel by the chemical cross-linking method, and their tribological properties were systematically investigated. Furthermore, the lubrication mechanism of the MXene/GO-PVA hydrogel was investigated and deduced through multiple analytical techniques. Compared with the base hydrogel and single-component hydrogel, the MXene/GO-PVA hydrogel exhibits the best tribological performance: its coefficient of friction is reduced by 50.68%, and its wear volume is decreased by 63.99% relative to the PVA hydrogel. The inherent low interlayer shear strength and interlayer slip characteristics of MXene and GO, combined with their surface-abundant hydrophilic groups and the synergistic effects generated within the three-dimensional PVA hydrogel network, collectively contribute to the excellent lubrication performance. This study offers insights into the development of high-performance water-based lubricants.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Jin Jiafei,Cai Xiaoming,Zhang Zhiwu,Zhao Ziming,Fu Han,Tang Junwen,Xiao Weiqi,Qin Ming,Cai Jinming
As the power density of electronic devices continues to increase, traditional coolants (e.g., water and ethylene glycol) are unable to meet the demand for efficient heat dissipation. This study prepared graphene oxide (GO)/aminated iron (III) oxide (Fe 3 O 4 @SiO 2 –NH 2 ) nanofluids (NFs, abbreviated as GF NFs) with different mass fractions, and systematically investigated their stability, thermophysical properties, and heat transfer enhancement (HTE) mechanism under magnetic field modulation. Experimental results show the following: The viscosity of NFs increases with rising particle concentration and decreases with increasing temperature; Conductivity increases with increasing concentration and temperature. For heat transfer performance, the convective heat transfer coefficient (h) of the NFs increased significantly with flow rate. Adding 0.05 mass% GF to the base fluid, the maximum HTE of GF NFs reached 120%. reducing the device temperature by 2.2 °C. Under a 1460 G magnetic field, the 0.1mass% GF NF reduced the device temperature by 2.6 °C compared to the base fluid. Combined with numerical simulations, this study reveals that the Brownian motion of nanoparticles (NPs) and magnetically induced micro-convection synergistically disrupt the thermal boundary layer, thereby enhancing the heat transfer performance of NFs. This study provides novel functionalized NF materials and regulation strategies for the intelligent thermal management of high-power electronic devices.
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Environmental Science-Nano
·
2022
·Vol. 9
·期 2
·554-567
·
IF 9.473
Li Liang,Jia Chen,Xuwei Chen,Jianhua Wang,Hongdeng Qiu
Adsorption materials play very important roles when used to effectively remove organic pollutants from the environment. In this paper, a novel graphene oxide/COFs (GO/COFs) composite was synthesized by the Schiff base coupling reaction between 1,3,5-tri(4-aminophenyl)benzene and 2,5-divinylterephthalaldehyde on the surface and between layers of GO at room temperature. The synthesized GO/COFs composite has a low density, large specific surface area, layered porous structure and favorable water dispersion. The adsorption behavior of the GO/COFs composite for naphthalene, 1-naphthylamine and 1-naphthol in aqueous solution was studied. Compared with GO and the COFs alone, the composite has a higher adsorption capacity, which may be due to the synergistic effect of the COFs and GO. In addition, the GO/COFs composite achieves excellent regeneration capability through ultrasound in ethanol, which is a low energy consumption and easy to operate method. This composite is hoped to be an excellent adsorbent in environmental remediation.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Fang Lu,Chunyong Zhang,Jiehong Cheng,Cheng Zhu,Haojing Zhang,Xian Cheng
A direct methanol fuel cell (DMFC) electrode based on the carbon fiber cloth (CFC) modified with wrap-like graphene oxide (GO) decorated with platinum nanoparticles was prepared by multicycle CV method. Also, the Pt/CFC composite and GO/CFC composite were prepared by multicycle CV and potentiostatic method, respectively. The four electrodes (GO-Pt/CFC, Pt/CFC, GO/CFC and CFC) were tested in a fuel cell for electro-oxidation of methanol and were analyzed by scanning electron microscopy (SEM) and X-Ray powder diffraction (XRD). The SEM image indicated that the surface of CFC was covered by a wrap-like graphene oxide (GO) film completely, which increased the contact area with methanol solution and provided more load points. And the Pt nanoparticles supported GO/CFC electrode possessed the ball-like morphology. The electrochemical measurements showed that the electrocatalytic peak current density of methanol oxidation of GO-Pt/CFC electrode (218 mA/cm 2 ) was about 27% higher than Pt/CFC electrode (172 mA/cm 2 ) and the steady-state current density of GO-Pt/CFC electrode was 57.6%, 114.5% and 497.9% higher than that of Pt/CFC, GO/CFC and CFC electrodes, respectively. And this date revealed that the ball-like morphology of Pt nanoparticles and a wrap-like GO film coated on CFC surface were favorable to improve the electrocatalytic oxidation activity of methanol.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Han Zheng,Zhonghang Xia,Huiming Ji,Yiwen Zhang
Mild UV in-situ assembly synthesizes GO@TiO 2 with Ti–O–C bonds. • Sensor exhibits a response of 25.93–50 ppm ethanol under UV at 25℃. • GO@TiO 2 response shows nonlinear growth with concentration. • Reaction-driven reconducted network boosts sensitivity, selectivity and stability. The development of the Internet of Things (IoT) has created an urgent need for room‑temperature gas sensors that combine high sensitivity, selectivity, and stability, which existing gas-sensing materials still struggle to deliver. Herein, the GO@TiO 2 composite is constructed via photocatalytic in situ assembly, wherein TiO 2 nanosheets are anchored onto graphene oxide (GO) with strong Ti–O–C covalent bonds formed at the interface. Under UV illumination at 25℃, the GO@TiO 2 sensor exhibits a response of 25.93 toward 50 ppm ethanol—a 14.4-fold enhancement over pristine TiO 2 (1.80)—along with excellent selectivity against various interfering gases. Moreover, the response exhibits a nonlinear surge with increasing gas concentration. The reaction-driven conductive network reconstruction mechanism is innovatively proposed: electrons generated from the ethanol oxidation reaction are injected into GO across the Ti–O–C interface, progressively restoring the conductive network and thereby switching the dominant conduction pathway from TiO 2 to the repaired GO. This work provides an innovative strategy for room-temperature gas sensing through the construction of the dynamically tunable conductive network to achieve signal amplification. Download: Download high-res image (221KB) Download: Download full-size image The GO@TiO 2 composite with covalent Ti–O–C bonds are designed for room-temperature ethanol sensing via photocatalytic in-situ assembly. Under UV illumination, the gas sensing reaction injects electrons into GO across the Ti–O–C bonds, driving reconstruction of the GO conductive network from a high‑resistance oxidized state to a conductive reduced state and leading to a sharp drop in resistance. This reaction‑driven network reconstruction triggers a superlinear response, endowing the sensor with high sensitivity (response of 25.93–50 ppm ethanol), selectivity, and stability.
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IRANIAN POLYMER JOURNAL
·
2023
·Vol. 32
·期 10
·1291-1306
·
IF 3.1
Bao Cun,Yuan Haikuan,Huang Feili,Shi Jianghuan,Hao Ruiran,Zhang Yadi,Chen Xinyi,Lu Jie
In this work, we proposed a self-assembly method to fabricate a novel pervaporative membrane for desalination. The graphene oxide (GO) layer was deposited on polyacrylonitrile (PAN) ultrafiltration membrane support by vacuum assistance, and then a thin cross-linked sodium alginate (SA) layer was coated on the GO/PAN membrane surface to form a sandwich-like SA–GO/PAN composite membrane. The morphology and physicochemical structure of the composite membrane were characterized using attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electronic microscopy (SEM), and atomic force microscopy (AFM) techniques and contact angle measurement. The thin SA layer would stabilize and protect the structure of GO layer of SA–GO/PAN membrane, thus GO layer was not easy to fall off or crack during pervaporation desalination. The effects of SA coating concentration, feed temperature, salt concentration, and multicomponent salt solutions on the desalination performance of the prepared membrane were investigated. SA–GO/PAN membrane showed a good desalination performance for high salt concentration solutions and multicomponent salt solutions. When the feed temperature raised from 30 to 80 °C, the flux of the SA–GO/PAN composite membrane increased from 5.61 to 18.35 kg m −2 h −1 , while the rejection still remained above 99.8%. The experimental results showed that SA–GO/PAN composite membrane performed well in pervaporative desalination of salt solution with excellent long-term stability. Graphical abstract
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危险品化学品经营许可证（带存储）