SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Longjie Liu,Jiajiang Lin,Gary Owens,Zuliang Chen
Wastewater from sewage treatment plants containing 17α-estradiol (αE 2 ) has a high potential to cause environmental and human toxicity. Integration of adsorption and Fenton-like oxidation is one of the potential approaches to enhance αE 2 removal. In this study, one-step biosynthesized iron nanoparticles/reduced graphene oxide (FeNPs/rGO) by tea extract was successfully used for αE 2 removal. The results showed that the removal of αE 2 by FeNPs/rGO increased to 56.1%, being only 25.4% and 45.4% for rGO and FeNPs, respectively, indicating that both adsorption and Fenton-like oxidation enhanced the removal of αE 2 , where was confirmed by HPLC-UV. To understand the removal mechanism, characterizations, including ESR, SEM, EDS, FTIR and XPS were used to elucidate the specific roles of rGO and FeNPs in the adsorption and oxidation of αE 2 , and results showed that αE 2 was adsorbed as a monolayer on the surface of rGO via π–π bond interactions and that FeNPs underwent reactions with H 2 O 2 to generate ·OH for αE 2 degradation. Thereafter, a αE 2 degradation pathway was proposed via identification of degradation products (e.g., C 18 H 22 O 3 ) by HPLC-MS. Moreover, the removal of αE 2 by FeNPs/rGO conformed to the Langmuir isotherm with pseudo-first-order adsorption kinetics and pseudo-second-order degradation kinetics. Based on these evidences, the removal of αE 2 by FeNPs/rGO was presented.
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高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Hongyuan Li,Hongli Zhao,Zhenxing Wang,Fangfang Zhou,Minbo Lan
Hydrogen peroxide (H 2 O 2 ) is an important biomarker for recognition of multiple diseases, the construction of nonenzymatic miniaturized sensors that capable to real-time monitor H 2 O 2 is tremendously significant. Here, we developed a high-performance microelectrode based on carbon fiber via a facile stepwise electrodeposition method, which could realize the high-sensitivity detection of the target H 2 O 2 . Carbon fiber was decorated by reduced graphene oxide supported PtCu bimetallic cluster nanocomposite (PtCu-rGO), in which rGO as catalyst support had a thin layer, which could realize the uniform loading of the other material. Meanwhile, in virtue of the low cost and synergistic effect, PtCu bimetallic cluster nanoparticles exhibited great potential in electrocatalytic of H 2 O 2 . The PtCu-rGO modified microelectrode displayed outstanding electrochemical behavior to H 2 O 2 sensing, including a broad working range of 5 μM-1270 μM (R 2 = 0.991), 1270 μM-3920 μM (R 2 = 0.998) with high sensitivity (15079.9 μA mM -1 cm −2 , 5–1270 μM; 10319.8 μA mM −1 cm −2 , 1270–3920 μM), an appreciable detection limit of 0.60 μM, as well as good selectivity, reproducibility and stability. Additionally, this easy-to-interpret sensor enabled real-time monitoring of H 2 O 2 generated from living cells and could further recognize cancer cells and normal cells. This newly proposed microsensor could be a promising tool for clinic diagnosis.
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JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Yang Bai,Yufei Yuan,Luyang Miao,Changli Lü
Anion exchange membranes (AEMs) still remains a povital issue such as low ion conductivity, which hinders the practical applications. Therefore, constructing cross-linking structure in AEMs is considered as an effective strategy to balance the comprehensive properties including chemical stability and ion conductivity. However, the cross-linking may hinder the ion transport and decrease the ion conductivity unsatisfactorily. Herein we prepared highly ion conductive quaternized polysulfone (QPSU)-based AEMs (CQPSU-X-rGO) cross-linked by reduced graphene oxide (rGO) functionalized with different-chain length small molecules. The cross-linked QPSU AEMs (CQPSU-n) with organic small molecules as cross-linkers were also prepared to serve as control samples. Compared with AEMs cross-linked by short-chain cross-linkers, the cross-linked membranes with elastic long-chain cross-linkers (PTMHDA) and their modified rGO (LrGO) displayed higher ion conductivity due to the generation of more quaternary ammonium groups and nanophase separated morphology. Especially, the functionalized rGO-cross-linked composite membranes (CQPSU-X-LrGO and CQPSU-X-SrGO) exhibited better conductivity and chemical stability as compared with cross-linked polymer membranes (t-CQPSU-n and p-CQPSU-n) with small molecule cross-linkers. The highest ion conductivity was achieved for rGO-cross-linked AEMs (CQPSU-2%-LrGO, σ OH - = 139.7 mS/cm at 80 °C). Thus, the functionalized rGO has been demonstrated to be a potential cross-linker and filler for preparing cross-linked AEMs with improved properties.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 10
·7799-7810
·
IF 2.779
Viswanathan Munusami,Arutselvan K.,Vadivel S.,Govindasamy S.
As a two-dimensional nanostructure, reduced graphene oxide (RGO) has high specific surface area and excellent conductivity. In this report, we obtain the BaSnO 3 /RGO via facile hydrothermal method and apply it as a photoanode material in dye-sensitized solar cells. A facile hydrothermal method is used to describe the synthesis of RGO hybridization of BaSnO 3 perovskite-type oxide nanopowder and its use as a photoanode replacement in dye-sensitized solar cells. Strutural, morphological, elemental composition and optical properties of the prepared samples were analyzed by X-ray diffraction, Raman, scanning electron microscope, energy dispersive spectra, transmission electron microscope, UV-Vis spectra, photoluminescence and X-ray photoelectron spectra analysis. RGO in the BaSnO 3 photoanode can inhibit charge recombination and thus improve the power conversion efficiency (PCE) of the DSSC. Moreover, the layered structure RGO increases the dye absorption in the BaSnO 3 photoanode and the light harvesting efficiency. As a result, JSC and PCE based on BaSnO 3 /RGO photoanode have considerably increased from 8.45 to 19.51 mA cm −2 , 3.41% to 9.88%. Based on the findings, BaSnO 3 /RGO photoanodes under easily reproducible scientific/rational approach will facilitate an astonishing possibility to enhancing the PCE which confidently reinforce the probability of implementation in practical life and is indispensable for balancing the future non-renewable energy dearth.
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ACS Applied Electronic Materials
·
2026
·Vol. 8
·期 14
·5928-5938
·
IF 4.7
Wang Xin,Luo Yunjun,Yang Xiaoxia,Bi Sifu,Wang Kexin,Yang Zhongke,Liu Mingxu,Zhang Yu,Guo Yixiao,Liu Haiping
Temperature monitoring serves as an effective safety measure for lithium batteries. However, conventional temperature sensing technologies face limitations in dynamic monitoring applications due to insufficient flexibility, poor adhesion to curved surfaces, and challenges in achieving multipoint measurements. Consequently, this work investigates a flexible thin-film temperature sensor based on a SnO 2 /RGO composite material, fabricated via a simple one-step hydrothermal process. The sensor enables temperature monitoring at multiple locations on the lithium battery surface, thereby more accurately reflecting the temperature distribution across the battery surface. The temperature sensor exhibits a highly linear (99.64%) negative temperature coefficient (NTC) characteristic over the range of 10–100 ° C, along with high sensitivity (−0.766%/ ° C) and excellent cyclic stability. We used the fabricated temperature sensor to the surface of a pouch lithium battery for monitoring surface temperatures under both nonabuse and abuse conditions. The experimental results demonstrate that the sensor effectively captures temperature changes at different locations on the battery surface during actual nonabuse and abuse conditions, offering experimental validation supporting the advancement of flexible thin-film temperature sensors for lithium-ion battery temperature monitoring applications.
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yu-Han Yuan,Jia Liang,He-Jie Wu,Gui-Fang Li,Shuang-Lin Cai,Jin-Wei Yan,Hai Huang,Ye Zeng,Ming-ming Tao,Xiao-hong Fan,Yi Li,Ding-Rong Deng,Qi-Hui Wu
F-CN@RGO presents multi-dimensional synergy between the conductive framework and heteroatom doping. • F-doping induces lattice distortion, optimizes the electronic structure, enhances redox kinetics. • It exhibits outstanding long-cycle stability, with a capacitance retention of 86.8% after 30,000 cycles. • The asymmetric supercapacitor achieves a high energy density of 87.75 Wh·kg −1 and excellent cycling stability. Supercapacitors possess exceptional capacity to transfer energy quickly, but increasing cycle stability and energy density is still a major problem that hinders their commercial applications. This study uses a one-step hydrothermal method to build and construct a fluorine F-doped three-dimensional (3D) Co 2 NiO 4 @reduced graphene oxide (RGO) heterostructure (referred as F-CN@RGO) on the nickel foam (NF) electrical collector. RGO-wrapped NF functions as 3D conductive framework that suppresses the volume strain during long-term cycling while simultaneously improving the electron transfer efficiency, electrical conductivity, and specific surface area. F-doping regulates the electronic structure, surface properties, and chemical stability of Co 2 NiO 4 @RGO. The high electronegativity of F ions accelerates the electron transfer, induces the lattice distortion of Co 2 NiO 4 @RGO, and consequently modulates its electronic structure and interfacial reaction kinetics. Electrochemical tests show that the activated F-CN@RGO (A-F-CN@RGO) has a high specific capacitance of 8.76 F·cm −2 (5 mA·cm −2 ). After 30,000 cycles, the asymmetric supercapacitor with A-F-CN@RGO and activated carbon as the electrodes retains 88.2% of its initial capacitance. By generating multi-dimensional synergistic effects with rational design structure between the substrate and active materials as well as heteroatoms and host materials, this work offers a universal technique for the controlled production of high-performance electrodes for supercapacitors. Download: Download high-res image (403KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124766
·
IF 7.5
Tao Hou,Hong-Li Lu,Naif Abdullah Al-Dhabi,Ai-Hong Chen,Wang-Wang Tang,Meng-Yuan Li,Dan Cui
Azo dye wastewater remains challenging to treat due to its high chemical stability, toxicity, and poor biodegradability. Herein, a reduced graphene oxide/polyaniline (rGO/PANI)-modified carbon brush was developed as a biocathode for Alizarin Yellow R (AYR) decolorization in a bioelectrochemical system (BES). Physicochemical characterization confirmed successful rGO/PANI modification and showed improved surface properties, including porous morphology, enhanced hydrophilicity, and less negative surface charge. Electrochemical analyses further demonstrated higher current response, lower interfacial resistance, and improved cathodic activity after modification. At 0.7 V, the rGO/PANI biocathode achieved 96.1 ± 0.02% AYR decolorization and 74.6% COD removal within 24 h, together with higher current response and lower interfacial resistance than the unmodified biocathode. Coulombic efficiency decreased from 65.3% to 46.7%, indicating electron loss to competing cathodic reactions. Microbial community analysis showed that rGO/PANI modification reshaped the cathodic biofilm and selectively enriched dominant genera, particularly Comamonas and Flavobacterium. Functional prediction further suggested enhanced potential for extracellular electron transfer and azo dye reduction. These results demonstrate that rGO/PANI modification is an effective and economical approach for improving biocathode performance in azo dye wastewater treatment.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 33
·45388-45398
·
IF 7.8
Su Ju-Wen,Wang Xing-Qi,Zhu Bo-Yuan,Yang Wei-Wei,Qu Zhi-Guo,Tao Yu-Bing
High-power operation of vanadium redox flow batteries (VRFBs) is still limited by sluggish interfacial charge transfer, insufficient electrolyte wettability, and concentration polarization within porous carbon electrodes. Herein, an iodine-functionalized reduced graphene oxide/graphite felt electrode (GF@rGO-V) was prepared through hydroiodic acid vapor treatment to regulate the solid–liquid interface of graphite felt while retaining its three-dimensional porous framework. Structural and surface analyses indicate that HI vapor treatment produces a less compact iodine-containing rGO interface with improved electrolyte accessibility. Electrochemical measurements further reveal enhanced apparent ion transport and reduced charge-transfer resistance toward both VO 2+ /VO 2 + and V 2+ /V 3+ redox couples. Temperature-dependent impedance analysis shows that the apparent activation energy for the positive reaction decreases from 40.2 kJ mol –1 on pristine graphite felt to 23.7 kJ mol –1 on GF@rGO-V, suggesting a more favorable interfacial kinetic environment. As a result, the assembled VRFB delivers an energy efficiency of 82.2% at 400 mA cm –2 , a peak power density of 1257.6 mW cm –2 , and stable cycling over 1500 cycles at 400 mA cm –2 . This work demonstrates an iodine-assisted interfacial engineering strategy for improving mass transport and charge-transfer kinetics in high-power aqueous flow batteries.
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PubMed
高影响因子
LANGMUIR
·
2026
·Vol. 42
·期 28
·20794-20804
·
IF 4.4
Fang Shuaishuai,Cai Xiaoming,Wang Shaoqiu,Su Jianwen,Tang Junwen,Zhang Xiuyu,Qin Fengjia,Liu Zijian,Cai Jinming
Lithium iron phosphate (LiFePO 4 , LFP) is severely
limited
by its intrinsically low electronic conductivity and sluggish lithium-ion
diffusion kinetics, particularly under high-rate operating conditions.
Therefore, introducing high-performance conductive additives to construct
efficient electron transport networks has been considered an effective
strategy for improving the rate capability and cycling stability of
LFP cathodes. Among various conductive materials, reduced graphene
oxide (rGO) and carbon nanotubes (CNT) have attracted extensive attention
owing to their excellent electrical conductivity and unique structural
advantages. However, the intrinsic tendency of rGO nanosheets to restack
and CNT to entangle often hinders the construction of continuous and
efficient conductive networks. Herein, an interfacial co-dispersion
strategy is developed to regulate the assembly of graphene oxide (GO)
and hydroxylated carbon nanotubes (CNT-OH), leading to the formation
of an rGO/dCNT conductive architecture. Interfacial interactions associated
with oxygen-containing functional groups facilitate the homogeneous
co-dispersion of GO and CNT-OH in aqueous media, while partially hydroxylated
CNTs are preintercalated between adjacent GO sheets to form an interlayer
intercalation–bridging architecture. During the subsequent
thermal reduction process, the prefabricated architecture efficiently
inhibits the restacking of rGO nanosheets and simultaneously constructs
interconnected lithium-ion transport pathways between adjacent layers,
thereby forming a robust three-dimensional conductive network. When
applied as a conductive additive for LiFePO 4 cathodes,
the optimized rGO/dCNT composite (L-RO 2–1 ) delivers
a discharge capacity of 159 mAh g –1 at 0.2 C and
maintains 104.3 mAh g –1 after 300 cycles at 6 C,
while exhibiting lower charge-transfer resistance and faster lithium-ion
diffusion kinetics. This work provides an effective strategy for constructing
stable carbon-based conductive networks for high-rate lithium-ion
batteries.
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Huai Wang,Zhongming Guo,Zhiqiang Yang,Renze Zhang,Yinghao Guo,Zhenyu Yuan,Lu Kong,Hanyang Ji,Fanli Meng
Toluene is not only a prevalent indoor air pollutant but also a regulated chemical precursor in illicit drug synthesis. Therefore, developing a gas sensor capable of highly sensitive detection of trace toluene is critically important. In this study, rGO-In 2 O 3 -AuPd nanocomposites were synthesized through the hydrothermal growth of In 2 O 3 on rGO and the in-situ chemical reduction of Au and Pd precursors, achieving ppb-level detection of toluene. The crystalline phase, nanoscale morphology, and chemical states of the nanomaterials were systematically characterized and analyzed through characterization techniques such as XRD, SEM, TEM, and XPS. Gas-sensing experiments revealed that the rGO-In 2 O 3 -AuPd demonstrated superior gas-sensing performance to toluene, exhibiting a high response value (101.1) to 100 ppm toluene, which was 43.96 times that of pure In 2 O 3 . Additionally, comparative studies demonstrated that the gas-sensing performance of In 2 O 3 modified with AuPd bimetallic nanoparticles (NPs) surpassed that of In 2 O 3 modified with a single metal (Au or Pd). The synergistic sensitization strategy based on bimetallic AuPd-modified In 2 O 3 compounded on rGO effectively reduced the operating temperature while enhancing the sensitivity response. This study provides promising sensing materials and design concepts for developing low-power, high-sensitivity trace-level toluene sensors.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yuxin Xu,Jiahao Zhu,Yi Zhang,Zhong Zhang,Qingwei Li,Dan Liu,Haitao Niu,Hua Zhou
Personal protective textiles showing high-performance electromagnetic wave absorption (EWA) along with multiple functions demonstrate considerable application prospects in daily life. Herein, a single-step, environmentally friendly, water-based fabrication strategy is developed to produce a durable and highly efficient EWA coating on PET fabrics, simultaneously integrating antibacterial, antistatic, and high-performance water/sweat-wicking properties. This multifunctional coating is realized through the synergistic interaction of its coating constituents including the incorporation of Co@C nanoparticles (NPs) derived from Co-based zeolitic imidazolate frameworks (ZIF-67), the in situ reduction of graphene oxide (GO) facilitated by fatty acid methyl ester ethoxylate sodium sulfonate (FMES), and the 3-glycidyloxypropyl triethoxysilane (GPTMS)-mediated cross-linking. The resulting Co@C/rGO/GPTMS-coated PET fabric exhibits excellent moisture-wicking and water adsorption capacity. Benefiting from the combined effects of conduction loss, interfacial polarization loss, and a hierarchical surface structure, it demonstrates outstanding EWA performance with an RLmin of −56.5 dB and EABmax covering the entire X-band. The incorporation of Co@C and rGO within the coating matrix imparts robust antibacterial and antistatic properties, achieving an antibacterial rate of over 99% against both Staphylococcus aureus and Escherichia coli, along with a significant reduction in static voltage to 130 V and a short half-life of merely 0.01 s.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jinghong Pan,Chuxiao Sun,Jiajun Liu,Xishan Zhao,Chunxiao Jiao,Chengkai Wang,Qi Wang
Si-based materials are the most potential high-capacity anode material for lithium-ion batteries due to their theoretical specific capacity of 4200 mAh g −1 , significantly higher than the current commercial graphite anode (372 mAh g −1 ). However, the significant volume change (>300%) of Si-based materials during the embedding of lithium ions into Si NPs results in various issues, such as short cycle life and low electrical conductivity , which significantly restricts their commercial development. This study introduces a new flower-like Si@NiO/reduced graphene oxide (rGO) ternary composite synthesized using a straightforward and low-pollution one-step synthesis technique. A distinctive composite flower-like structure is created by wrapping Si NPs in NiO nanoflowers and embedding the rGO nanosheets in the NiO "petal" structure. This structure can shorten the lithium-ion transport path, provide a superb conductive network, effectively reduce the electrode's bulk effect and improve the structural stability of the anode material. Additionally, the structure provides more capacity for the electrodes. At a current density of 1 A g −1 and after 700 cycles, the Si@NiO/rGO anode displays a discharge-specific capacity of 1081.34 mAh g −1 thanks to its one-of-a-kind flower-like structure. At various current densities, the Si@NiO/rGO anode likewise demonstrates outstanding electrochemical performance. Additionally, the volume growth of the flower-like Si@NiO/rGO anode material after 700 cycles is approximately 15.08%, substantially less than that of Si NPs. The new flower-shaped Si@NiO/ rGO ternary composite, synthesized in a simple and cost-effective way, offers not only an alternative for the preparation of Si-based electrode materials that can alleviate their drastic volume expansion but also an effort to create new renewable green energy storage devices.
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