ANALYST
·
2015
·Vol. 141
·期 9
·2712-2726
·
IF 4.107
Min Hong,Lidan Xu,Fangli Wang,Zhirong Geng,Haibo Li,Huaisheng Wang,Chen-zhong Li
Silver nanoparticles (AgNPs) and reduced graphene oxide (rGO) hybrid nanoporous structures fabricated by the layer-by-layer (LBL) electrostatic self-assembly have been applied as a simple platform for the rapid analysis of carboxyl-containing small molecules by surface-assisted laser desorption/ionization (D/I) mass spectrometry (SALDI-MS). By the simple one-step deposition of analytes onto the (AgNP/rGO)9 multilayer film, the MS measurements of various carboxyl-containing small molecules (including amino acids, fatty acids and organic dicarboxylic acids) can be done. In contrast to other energy transfer materials relative to AgNPs, the signal interferences of a Ag cluster (Agn+ or Agn−) and a C cluster (Cn+ or Cn−) have been effectively reduced or eliminated. The effects of various factors, such as the pore structure and composition of the substrates, on the efficiency of D/I have been investigated by comparing with the (AgNP)9 LBL nanoporous structure, (AgNP/rGO)9/(SiO2NP)6 LBL multilayer film and AgNP/prGO nanocomposites.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Zhanghua Zou,Wei Xiao,Yanhua Zhang,Hong Yu,Wenjie Zhou
We report the design of a freestanding cellulose/RGO/silver/Fe 2 O 3 hybrid film for direct use as electrodes for construction of high-performance flexible solid-state supercapacitor (FSS). It is well characterized and found to feature noticeable capacitive properties due to the unique structure, high conductivity and dual electroactive species (i.e., RGO and Fe 2 O 3 ) for charge storage. As demonstrated in a three-electrode system, such film electrode achieves the maximum areal and volumetric capacitance of 2044 mF cm −2 and 75.7 F cm −3 , respectively, with prominent rate performance and long-term cyclic durability. Later, a symmetric FSS device is constructed by employing this film as both anode and cathode electrodes. The as-assembled device offers the highest areal and volumetric capacitance of 1132 mF cm −2 and 18.2 F cm −3 , respectively, displays inconspicuous performance degradation under different curved states, and possesses the largest areal energy density of 226.4 μWh cm −2 , which is far better than that of many advanced symmetric and asymmetric flexible supercapacitors. The attractive capacitive behaviors and easy fabrication processes could render cellulose/RGO/silver/Fe 2 O 3 hybrid film a promising material for the applications in next-generation flexible and wearable electronics in the future.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yan Zhao,Linfeng Hu,Shuo Liu,Yuzheng Liu,Weihong Guo
Metal-ion coordination jointly regulates hydrogel and TA@rGO networks. • PTGS-Fe 3+ reaches 1.10 MPa tensile and 3.33 MPa compressive strength. • Conductivity increases to 17.8 S m −1 despite stronger crosslinking. • Machine learning recognizes hydrogel states and nine human motions. The development of flexible sensors requires hydrogel materials with high mechanical strength, electrical conductivity, and multifunctional adaptability. However, achieving simultaneous enhancement of mechanical and electrical properties remains challenging due to the trade-off between network reinforcement and charge transport. Herein, a modular conductive hydrogel strategy based on metal-ion coordination regulation is proposed. A tannic acid-reduced graphene oxide (TA@rGO) conductive filler is incorporated into a polyacrylamide/sodium alginate (PAM/SA) double-network hydrogel, and the resulting PAM/TA@rGO/SA hydrogel is denoted as PTGS. Subsequently, dynamic coordination interactions between Cu 2+ /Fe 3+ ions and oxygen-containing groups of SA, as well as polyphenolic sites of TA, are utilized to prepare PTGS-Cu 2+ and PTGS-Fe 3+ hydrogels with tunable properties. Metal-ion coordination significantly improves the mechanical performance, with PTGS-Fe 3+ achieving tensile and compressive strengths of 1100 kPa and 3330 kPa, respectively. Unlike conventional ion-conducting hydrogels, where enhanced crosslinking generally suppresses conductivity, TA@rGO-mediated electronic pathways allow metal-ion coordination to simultaneously improve conductivity, reaching 17.8 S m −1 for PTGS-Fe 3+ . Moreover, different coordination states endow the hydrogels with distinct sensing characteristics, including wide-range strain detection, balanced sensitivity and detection range, and high sensitivity at low strain. Combined with machine learning algorithms, the hydrogels enable material-state recognition and accurate classification of diverse human motions. This work provides a modular strategy for designing multifunctional conductive hydrogels with tunable sensing capabilities.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xiaoyan Yu,Jiatong Tang,Caiyi Chen,Ziwei Qin,Lilin Cai,Jianxin Tan,Hengbao Liang,Xiangpo Du,Wangjian Zhai,Jie Zhong
BMFO/N-RGO activated PMS through multiple pathways. • The redox of Mn(III) and Fe(II) favored the regeneration of active sites. • Doping Fe into BMO and N in RGO were beneficial for the electron transfer. • TC was effectively decomposed by BMFO/N-RGO through PMS activation. Activating persulfate with catalysts has become an efficient way to remove organic pollutants. In particular, the use of dual transition-metal catalysts can not only further increase the quantity of active sites for persulfate activation but also promote the recycling of active sites. In this study, a bimetallic catalyst composed of iron-doped BiMnO 3 and nitrogen-doped RGO (denoted as BMFO/N-RGO) was synthesized by a one-step hydrothermal method. The dual metals (Mn and Fe) and N-RGO provided abundant active sites and multiple pathways for activating peroxymonosulfate (PMS). So the prepared BMFO/N-RGO could activate PMS to effectively decompose tetracycline (TC) with η = 93.31% in 60 min. The removal efficiency of TC was still above 85.53% after five cycles. Based on ESR, trapping experiments, and electrochemical measurements, BMFO/N-RGO activated PMS via a combined radical-nonradical pathway, with the nonradical pathway predominating. In the radical pathway, O 2 •- , •OH, and SO 4 •- attacked TC; while in the nonradical pathway, 1 O 2 , Fe(IV)=O, Mn(IV)=O, and electron transfer dominated TC removal. Furthermore, DFT calculations demonstrated that PMS was more readily adsorbed on BMFO/N-RGO, that l o-o was stretched, and that the Bader charge increased. The redox between Mn 3+ /Fe 2+ and Mn 2+ /Fe 3+ favored the recycling and regeneration of active sites. The BMFO/N-RGO/PMS system showed good resistance to most inorganic ions and HA. A mechanism of TC removal by BMFO/N-RGO/PMS system was proposed. HPLC-MS elucidated the degradation pathway of TC. This study proposed a new approach to construct multiple pathways to activate PMS on bimetallic oxide surfaces for TC removal in complex aqueous environments. A composite BMFO/N-RGO catalyst was synthesized via a one-step hydrothermal method. BMFO/N-RGO activated peroxymonosulfate (PMS) through the radical and nonradical pathways to degradate TC, in which the nonradical pathway were predominating. Doping Fe into BMO and N in RGO led to higher E ads , larger Bader charge, and longer l O-O of PMS, all of which were beneficial for the decomposition of TC via electron transfer. In the radical pathway, O 2 ▪- and SO 4 ▪- attacked TC; While in the nonradical pathway, 1 O 2 , Fe(IV)=O, Mn(IV)=O, and electon transfer dominated TC elimination. And the redox reaction between Mn 3+ /Fe 2+ and Mn 2+ /Fe 3+ favoured the recycling and regeneration of active sites, thereby sustainably activating PMS. The removal rate of TC reached 93.31% within 60 min in BMFO/N-RGO/PMS system. Download: Download high-res image (72KB) Download: Download full-size image
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Tibebu Shiferaw Kassa,Abdurohman Mengesha Yessuf,Ayenew Meniber Mihiretu,Minable Endaye Rass,Mohamedazeem M. Mohideen,Yong Liu
The rapid transition from 5G to 6G wireless technologies has led to a substantial increase in electromagnetic interference (EMI), posing significant challenges to device reliability, signal integrity, and human health. There is an urgent need for lightweight, flexible, and efficient absorption-dominant EMI shielding materials. In this study, we propose a rationally designed coaxial electrospinning strategy to fabricate hierarchical MXene/reduced graphene oxide/polyacrylonitrile core–shell nanofibers. This design integrates a conductive, MXene-rich core surrounded by a reduced graphene oxide/polyacrylonitrile outer shell, encouraging simultaneous optimization of electrical conductivity, impedance matching, and polarization loss to achieve superior EMI shielding performance and thermal blocking. Interestingly, when the reduced graphene oxide to MXene ratio was optimized to be 1:2, the resultant composite nanofiber revealed an EMI shielding effectiveness of 74.38 dB at X-band, a shielding efficiency of 99.99999635%, a high electrical conductivity (169.81 S·cm–1), and an outstanding specific shielding effectiveness of 2.54 × 104 dB·cm2·g–1. Additionally, the sample exhibited effective thermal insulation, with the surface temperature rising by only 41 °C after 1 min of exposure to a 75 °C heat source. These findings highlight the synergy between the high electrical conductivity of MXene, which enables strong internal reflection and ohmic loss, and the interfacial polarization of reduced graphene oxide, which fosters multiple internal reflections that enhance absorption. This optimized, absorption-dominated mechanism provides valuable guidance for designing next-generation lightweight and flexible EMI shielding materials for applications in aerospace, 5G/6G communications, and advanced electronic devices.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Li Guo,Zijie Liu,Junshan He,Yanzhong Wang
Three-dimensional Ni-TDA@rGO composite aerogels were synthesized by a one-step solvothermal method. • The interconnected porous rGO conductive network enhances the electrical conductivity of Ni-TDA. • Ni-TDA@rGO-20 has a specific capacitance of 117.36 mAh g⁻¹ at 0.5 A g −1 . Designing high-conductivity and structurally stable MOF composites with abundant accessible active sites still faces great challenges. Herein, Ni-TDA@rGO composite aerogels are prepared via a simple one-pot solvothermal method. The introduced rGO constructs a continuous 3D conductive network to accelerate charge transport, and the hierarchical porous structure ensures full electrolyte contact and sufficient exposure of electroactive sites. The obtained electrode delivers a high specific capacity of 117.36 mAh g⁻¹ at 0.5 A g⁻¹. The assembled asymmetric supercapacitor achieves an energy density of 31.6 Wh kg⁻¹ at 795 W kg⁻¹, and retains 90% capacity after 10000 cycles. The outstanding electrochemical performance is attributed to the synergistic effect of rGO, which effectively prevents MOF aggregation and greatly accelerates electron and ion diffusion. This work offers a feasible strategy for developing advanced electrode materials, and MOF-based composites possess broad application prospects in high-efficiency energy storage devices. Download: Download high-res image (217KB) Download: Download full-size image
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·542
·
IF 5.4
Chen Chong,Liu Yufei,Zhang Kai,Fan Qiao,Luo Tingting,Peng Shigui,Wei Lanlan,Yin Yucheng,He Min,Yu Jie
Wearable sweat sensors offer a promising technical approach for real-time personal health management due to their non-invasive, in situ, and continuous monitoring capabilities. This study presents a novel wearable non-enzymatic electrochemical sensor based on a PEDTM/rGO/AuNPs composite for continuous and non-invasive monitoring of sweat glucose. Leveraging the synergistic effects of hydroxymethyl-functionalized poly(3,4-ethylenedioxythiophene) (PEDTM), reduced graphene oxide (rGO), and gold nanoparticles (AuNPs), the sensor significantly improves the electrocatalytic oxidation efficiency of glucose. At a low working potential of 0.2 V, the sensor demonstrates high sensitivity (362 µA·mM − 1 ·cm − 2 ) and a low detection limit (6.2 µM). Density functional theory (DFT) calculations reveal the synergistic catalytic mechanism of the composite at the oxidation pathway level. To achieve stable and efficient sweat collection and real‑time analysis, the sensor is integrated with a microfluidic chip based on SDS/NaOH/PI nanofibers and a portable point-of-care testing (POCT) system, enabling on‑site visual monitoring of sweat glucose. Real‑time monitoring results indicate a strong correlation between the sweat glucose levels measured by the sensor and blood glucose concentrations. This work provides an effective material and device design strategy for constructing high‑performance, integrated non‑invasive glucose monitoring systems, offering significant theoretical value and application potential in the field of wearable health monitoring. Graphical abstract
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PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Huiyang Jiang,Ying Huang,Xiaoxiao Zhao,Honghang Zhu,Hanjie Huang,Meng Zong
Although traditional ferrite wave-absorbing materials demonstrate excellent magnetic loss capabilities, they suffer from high density, dependence on a single magnetic loss mechanism, and impedance mismatch in the high-frequency range. These factors significantly limit their application in lightweight equipment and broadband stealth technologies. Therefore, it is particularly important to combine ferrite with other materials to enhance its wave-absorbing properties and reduce the overall density of the composite.This study successfully fabricated composite films of CNF-CoFe 2 O 4 (CC), CNF-RGO (CR), and CNF-(CoFe 2 O 4 /RGO) (CCR) using electrospinning technology, where CNF serves as the substrate loaded with magnetic CoFe 2 O 4 nanoparticles and dielectric RGO. On one hand, the electrospun films, composed of high-aspect-ratio CNF and compressed into multilayered stacking configurations, enhance the effective absorption area and promote multiple reflections and interfacial effects of electromagnetic waves within the CNF matrix, contributing to conductive and polarization relaxation losses. On the other hand, the magnetic CoFe 2 O 4 nanoparticles result in eddy current and resonance losses. The formulated S1 sample exhibits a minimum reflection loss (RL min ) of −38 dB and a maximum effective absorption bandwidth (EAB) of 6.4 GHz, while achieving a high thermal conductivity of 4.983 W/(m·K), thereby enhancing the material’s versatility.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123675
·
IF 7.5
Bicai Li,Hongrui Zhao,Chenxi Li,Hui Fu,Yuanping Li,Yi Huang,Guowen He
Biorefractory protein-like dissolved organic matter (DOM) in swine wastewater presents a formidable challenge for photocatalytic degradation, whereas binary photocatalysts suffer from intrinsic limitations of inefficient charge separation and poor selective DOM adsorption. To mitigate these critical drawbacks, we designed ZnO/TiO 2 -rGO ternary photocatalysts with tunable oxygen vacancy (O V ) concentrations and a Type Ⅱ heterojunction by regulating rGO dosages via a two-step hydrothermal method, achieving dual optimization of charge transfer dynamics and selective DOM adsorption. The optimal ZTR-4 catalyst (O V concentration 45.32%) achieved 69.40% protein-like DOM removal, with a rate constant 3.4 and 2.3 times higher than binary composites (ZR and TR). Excitation-emission matrix (EEM) and UV–visible spectral analyses confirmed the conversion of labile protein-like DOM to refractory humic-like and fulvic-like substances via oxidative condensation and Maillard reactions, with superoxide anion radicals (·O 2 - ) and photogenerated holes ( h + ) serving as the dominant reactive species. The enhanced performance stemmed from the synergy of heterojunction-mediated charge separation, rGO-facilitated electron transport, π-π adsorption, and O V -induced photogenerated carrier recombination suppression. This work not only verifies the application potential of the as-prepared materials in real livestock wastewater, but also clarifies the intrinsic degradation and humification mechanisms of complex DOM.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zehua Li,Zhichun Duan,Meipeng Jian,Yuanping Fang,Yingming Xu,Yalun Wang,Chaohong Tan,Haiyan Li
A novel nZVI-rGO/Geotextile was developed via in situ growth. • nZVI-rGO/Geotextile enabled stable NO 3 − -N removal in bioretention. • The system achieved up to 98% NO 3 − -N removal over 120 days. • Low C/N denitrification was maintained with effluent NO 3 − -N of 0.55 mg/L. • Enhanced denitrification was linked to Fe stability and key gene enrichment. Bioretention systems have been widely applied for urban stormwater management, yet achieving efficient and stable nitrate (NO 3 − -N) removal under stormwater conditions with limited carbon availability remains a critical challenge. Herein, we report a supported nZVI-rGO/Geotextile prepared via an in-situ synthesis method for enhanced biological denitrification in bioretention systems. The nZVI-rGO/Geotextile amended bioretention system exhibited the outstanding NO 3 − -N removal performance during 120 days of operation, with NO 3 − -N removal efficiency of up to 98%, owing to the improved dispersibility and oxidation resistance of nZVI enabled by rGO nanosheets, along with its stable immobilization on the geotextile to reduce material loss. Moreover, ionic Fe release was observed in the nZVI-rGO/Geotextile bioretention system, which was associated with the higher reactivity of nZVI on the nZVI-rGO during denitrification. Importantly, under low C/N conditions, the introduction of nZVI-rGO/Geotextile maintained stable denitrification performance, with a comparable NO 3 − -N removal efficiency (~95%). Meanwhile, the nZVI-rGO/Geotextile exhibited decent material stability after denitrification in the bioretention system. Finally, metagenomic analyses revealed enriched key denitrifying taxa and enhanced genetic potential for downstream denitrification processes, which resulted in complete denitrification. Overall, this study offers new insights into the development of functional denitrification materials for stormwater treatment. Download: Download high-res image (442KB) Download: Download full-size image
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高影响因子
ChemNanoMat
·
2023
·Vol. 9
·期 5
·e202200569
·
IF 3.8
Yanyu Li,Xiaoyue Zhang,Jinglin Shen,Wei Qi
Graphical A new type of nanocomposite enzymes has been developed, composed of Pd−Pt nanoparticles, hemin-rGO and CNTs-COOH. The nanocomposites show a high peroxidase-like activity and a linear response toward H 2 O 2 in the range of 0.05–500 μM with a determination limit of 0.01 μM. Based on this, a paper sensor was constructed for H 2 O 2 detection in real samples. Nanocomposite enzymes are attracting intensive attention worldwide. In the present study, a novel colorimetric H 2 O 2 paper sensor was developed based on a new type of nanocomposites composed of Pd−Pt nanoparticles, hemin functionalized reduced graphene oxide (hemin-rGO) and carboxylated carbon nanotubes (CNTs-COOH). The proposed nanocomposites show a high peroxidase-like activity. It provides a sensitive platform showing a linear response toward H 2 O 2 in the range of 0.05–500 μM with a determination limit of 0.01 μM. Based on this, the composites were applied to construct a paper sensor for H 2 O 2 detection in real samples. The cost-effectiveness, simplicity and efficiency of this paper sensor could be developed for “point-of-care” analysis and other related areas.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Xiaoming Qi,Wenjun Wang,Hongbo Dai,Yaofeng Zhu,Yubing Dong,Shao-Yun Fu,Qingqing Ni,Yaqin Fu
Shape memory polymer fibers (SMPFs) coated with conductive layers are attracting increasing attention in soft robots and wearable electronics. However, the thickness and poor stretchability of the conductive layer hinder its applications. Here, the multifunctional two-way shape memory reduced graphene oxide (RGO)/ethylene–vinyl acetate copolymer (EVA) composite yarn is designed following the “swelling-ultrasonicating” and one-step twisting procedures. These RGO/EVA composite fiber conductive paths connected with each other by constructing the helical conductive network. The RGO/EVA composite yarn presents excellent electro-thermal conversion performance and outstanding load-bearing capability, enabling controlled electro-driven reversible strain (more than 10% reversible strain) and high energy density (72.5 J/kg). Additionally, the composite yarn has great stretchability (130% strain), high strain sensing sensitivity (gauge factor of 7.3), large linear working range (up to 70% strain). This work provides an innovative manufacturing strategy for the RGO/EVA composite yarn with two-way shape memory, electro-driven actuation, and strain sensing performance.
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高影响因子
危险品化学品经营许可证（带存储）