RARE METALS
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2024
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IF 9.6
Wang Wei,Chen Jun-Yu,Ouyang Jie,Yin Hong,Li Ao-Jie,Chen Liang,Huang Jun-Lin,Zhu Yu-Can,Li Gang-Yong,Hou Zhao-Hui
Two-dimensional MoSe 2 is a promising candidate for lithium-ion battery anodes. However, its conductivity and lithium storage volumetric effect still need to be optimized. In this work, W-doped MoSe 2 /rGO paper-like microspheres are successfully prepared through ultrasonic spray pyrolysis, achieving optimization at both the microstructure and mesostructure to enhance the lithium storage performance of the material. Firstly, by utilizing the similar two-dimensional structure between MoSe 2 and rGO, self-assembly is achieved through spray pyrolysis, resulting in a well-defined van der Waals heterostructure at the interface on the microscale, enhancing the electron and ion transfer capability of the composite. Secondly, the mesoscale paper-like microsphere morphology provides additional volume expansion buffering space. Moreover, W-doping not only increases the interlayer spacing of MoSe 2 (0.73 nm), thereby reducing the diffusion resistance of Li + , but also allow for the modulation of the energy band structure of the material. Density functional theory (DFT) calculations confirm that W-doped MoSe 2 /rGO exhibits the narrowest bandgap (0.892 eV). Therefore, the composite demonstrates excellent lithium storage performance, maintaining a specific capacity of 732.9 mAh·g −1 after 300 cycles at a current density of 1 A·g −1 . Graphical abstract
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Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 12
·6968-6982
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IF 10.7
Jing Qi,Chengkai Lin,Shuqi Deng,Yinze Zuo,Hui Zheng,Xuechao Jiao,Wei Yan,Jiujun Zhang
Potassium (K) with higher abundance than lithium has been explored as an anode material for K metal batteries (KMBs) for possible application in large-scale energy storage. However, the unstable solid electrolyte interface (SEI) at the K anode due to uncontrolled growth of K dendrites is a challenge in KMB development. In this paper, a multifunctional interface containing Sb2O3 and reduced graphene oxide (rGO) on Cu foam to form a current collector (Cu@Sb2O3@rGO) is developed for a KMB anode through structural regulation, where the Cu form with a large surface area can reduce the volume change during charge and discharge processes, Sb2O3 can provide potassiophilicity toward uniform K plating and stripping to give a dendrite-free K anode, and rGO can provide abundant defects for increasing the ion transport and reaction kinetics. Such a Cu@Sb2O3@rGO current collector exhibits a remarkable reversibility of K plating/stripping for up to 600 cycles at 0.5 mA cm−2/2 mA h cm−2, and the formed Cu@Sb2O3@rGO@K anode demonstrates an extended cycle lifespan of 1300 hours under 0.2 mA cm−2/0.2 mA h cm−2 in symmetric cells. This anode-constructed PTCDA‖ Cu@Sb2O3@rGO@K full battery exhibits both exceptional cycling stability (over 2000 cycles) and outstanding rate capability (112.8 mA h g−1 at 10 C). Furthermore, even under extremely low temperature (−20 °C), this battery can still maintain an impressive 55% of its room temperature capacity. In situ Raman spectroscopic techniques and electrochemical methods including in situ EIS, half cell, symmetric cell, and full cell tests and theoretical DFT calculations are carried out to probe the structure–performance relationship and the reaction mechanisms for fundamental understanding toward further optimizing the performance of such the K anode and the corresponding KMBs. The strategy for stabilizing the K metal anode in this work may provide a guidance for further development of advanced low-temperature potassium metal batteries.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Pengjie Zhong,Youqiang Huang,Qinglong Hu,Xin Yao,Wei Liu,Keyu Han,Gongxun Bai
Solar-driven interfacial evaporation has garnered significant attention as a sustainable technology for freshwater production. However, its widespread application is impeded by challenges, such as complex fabrication processes, high costs, and vulnerability to pore clogging. Herein, we present an E-shaped evaporator constructed through in situ integration of a binary photothermal nanocomposite comprising reduced graphene oxide and molybdenum disulfide (rGO/MoS2) onto a polyurethane sponge substrate. The synergistic light absorption enhancement of the rGO/MoS2 hybrid is rationally utilized to achieve excellent broadband solar harvesting. The distinctive E-shaped configuration simultaneously optimizes light utilization through multiangle photon capture and facilitates rapid water transport via hierarchical channels. This integrated system demonstrates exceptional operational stability with a cumulative water yield of 16.58 kg·m–2 under 12 h natural illumination, which could effectively facilitate seawater desalination and wastewater purification. The proposed fabrication strategy, characterized by cost-effectiveness and scalable manufacturing compatibility, paves the way for practical implementation in off-grid water purification systems.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Ruijie Ma,Tong Xue,Tianci Han,Chaoxia Wang,Yunjie Yin
Global energy demands and climate change challenges have highlighted the need for sustainable and energy-efficient solutions, driving interest in personal thermal management (PTM) technologies. Traditional PTM systems, however, rely on unidirectional thermal regulation, limiting their adaptability to fluctuating ambient conditions and humidity gradients. To overcome these limitations, we engineered a Janus Nano-ZnO/rGO nonwoven fabric (NZr@NF) that combines dynamic bidirectional thermal regulation with unidirectional sweat transport. The cooling side, featuring in situ grown Nano-ZnO layers, achieved high solar reflectance (88.49 %) and infrared emittance (94.20 %), allowing for net radiative cooling power of up to 100.38 W·m −2 . The heating side, functionalized with PDMS@rGO composites, demonstrated remarkable solar absorptance (94.86 %). Compared with the raw fabric, outdoor measurements demonstrated that it achieved an additional cooling effect of 6.27 °C and an additional heating effect of 17.1 °C. This Janus NZr@NF also excelled in moisture-wicking, achieving a cumulative one-way moisture transport index of 442.1 %, effectively mitigating post-sweat discomfort by facilitating evaporation and heat dissipation. With its ultraviolet (UV) resistance, breathability, and moisture permeability, this multifunctional metamaterial provides an innovative direction for wearable energy-saving PTM fabrics.
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COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Xiang Li,Yanji Zhu,Yue Sun,Dan Lin,Huaiyuan Wang
In harsh humid environments, conventional epoxy coatings suffer from inadequate corrosion resistance due to microporous defects formed during curing, while the trial-and-error optimization of fillers faces challenges such as unclear mechanisms and low design efficiency. This study proposes a novel "computation-driven material design" paradigm, elucidating the synergistic moisture-resistant mechanisms of fillers through cross-scale simulations. Molecular dynamics (MD) simulations show that adding 3 wt% graphene oxide (GO) reduces the free volume of epoxy by 15% and decreases the water diffusion coefficient by 10%. Density functional theory (DFT) calculations identify a high adsorption energy barrier (21.831 eV) generated by fluorine groups in polyfluoroaniline (PFAN) through electron cloud redistribution, effectively suppressing water penetration. Monte Carlo (MC) simulations further bridge microscopic energy barriers with macroscopic penetration flux. Guided by these insights, reduced graphene oxide-polyfluoroaniline (rGO-PFAN) composite fillers are synthesized via covalent grafting, experimentally demonstrating synergistic barrier-hydrophobic effects. Epoxy coatings containing 1.5 wt% rGO-PFAN retain an impedance modulus of 4.44×10 11 Ω·cm 2 after 90-day immersion, while 2 wt% filler reduces long-term water absorption by 73.63%. Salt spray tests confirm superior corrosion suppression at defect regions. Mechanical property tests show that the coating exhibits significantly reduced wear loss, enhanced adhesion strength, and perfect adhesion after thermal cycling. This work pioneers the multiscale correlation from electron-cloud interactions to macroscopic anticorrosion performance, establishing a theoretical framework for the rational design of intelligent coatings in extreme environments.
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Advanced Science
·
2025
·
IF 14.1
Xu Fu,Yizhou Shen,Lingfeng Zhao,Weixin Zhu,Weilan Liu,Chenliang Li,Yuebin Lin,Zongsheng Ye,Chengfeng Shen
Aircraft confronting harsh meteorological conditions and radar detection environments during high-altitude flights face significant risks, which can threaten flight safety. This study designs and fabricates a novel Jerusalem cross-inspired Frequency Selective Surface (FSS). Initially, rGO powder with an optimized reduction degree is synthesized as the conductive filler. Based on this, the rGO/WPU electrothermal coating is prepared using the spraying method, demonstrating excellent electrical conductivity and electrothermal performance. Subsequently, a New Jerusalem Pattern Structure (NJPS) is engineered on the coating surface. This patterned design notably improved microwave transmittance. Parameter optimization ensured superior wave transmission performance, with the underlying mechanism explained through antisymmetric surface current analysis. Laser-engraved NJPS samples are tested under both room-temperature and low-temperature conditions, confirming dual functionality: effective Joule heating and stable broadband transmission. Importantly, icing wind tunnel tests under simulated flight conditions verified the de-icing capability within 216s via interfacial water-film lubrication. This patterning strategy establishes a viable methodology for reconciling electrothermal de-icing and electromagnetic transparency on aircraft surfaces.
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MOLECULES
·
2025
·Vol. 30
·期 15
·3203
·
IF 4.6
Yue Yan,Bingxian Zhu,Zhengzheng Xia,Hui Wang,Weijuan Xu,Ying Xin,Qingshan Zhao,Mingbo Wu
The widespread adoption of sodium-ion batteries (SIBs) remains constrained by the inherent limitations of conventional anode materials, particularly their inadequate electronic conductivity, limited active sites, and pronounced structural degradation during cycling. To overcome these limitations, we propose a novel redox engineering approach to fabricate oxygen-vacancy-rich SnO2dots anchored on reduced graphene oxide (rGO), which are encapsulated within N-doped carbon nanofibers (denoted as ov-SnO2/rGO@N-CNFs) through electrospinning and subsequent carbonization. The introduction of rich oxygen vacancies establishes additional sodium intercalation sites and enhances Na+diffusion kinetics, while the conductive N-doped carbon network effectively facilitates charge transport and mitigates SnO2aggregation. Benefiting from the well-designed architecture, the hierarchical ov-SnO2/rGO@N-CNFs electrode achieves remarkable reversible specific capacities of 351 mAh g−1after 100 cycles at 0.1 A g−1and 257.3 mAh g−1after 2000 cycles at 1.0 A g−1and maintains 177 mAh g−1even after 8000 cycles at 5.0 A g−1, demonstrating exceptional long-term cycling stability and rate capability. This work offers a versatile design strategy for developing high-performance anode materials through synergistic interface engineering for SIBs.
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DIAMOND AND RELATED MATERIALS
·
2025
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IF 5.1
Jun Liu,Jiayin Li,Yao Chen,Xin Tan,Chun Yang
The abnormal contain of uric acid (UA) and tryptophan (Trp) in body could cause the liver and kidney function decline. The simultaneous detection of UA and Trp for early prevention of these liver and kidney diseases is significant. This study had developed the α-Fe 2 O 3 /reduced graphene oxide (rGO) for modification of the glassy carbon electrode (GCE) in (UA) and (Trp) detection. α-Fe 2 O 3 /rGO composite was synthesized through hydrothermal-calcination method. The optimal electrochemical conditions, including the pH values, scan rate, and accumulative parameters, were discussed for demonstrating the feasibility. Moreover, this α-Fe 2 O 3 /rGO/GCE presented wide linear relationships (0.01–900 μM) and low detection limits (UA (3.56 nM) and Trp (16.4 nM)). The DFT theoretical calculation revealed that the enhanced performance is mainly due to the high electrocatalytic property of α-Fe 2 O 3 nanotube, high conductivity of rGO, and interaction effect between target biomolecule and modified electrode surface. Finally, the approving results were also acquired in detection of practical UA and Trp samples by α-Fe 2 O 3 /rGO modified GCE. The results indicate that α-Fe 2 O 3 /rGO could provide a new and highly advantageous approach for detection of UA and Trp.
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COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Wenyan Huang,Jiahao Liang,Kaiqi Chen,Ying Yu,Yeqi Zhu,Junhui Li,Cheng Pan,Yipeng Guo,Siqi Lan,Rongqian Yao
With ongoing development of rocket combustion and hypersonic vehicles, urgent needs are created on thermal structures, protection and thermal insulating materials, particularly balanced enhancement of mechanical and antioxidant properties. Herein, we propose a design strategy to construct continuous in-situ formed SiOC nanowires (SiOCnws)-toughened self-healing SiO x coatings into porous SiC(rGO) PDCs. The key production technique is re-pyrolyzing coassembled flexible precursors/SiC(rGO) p /graphite blends, followed by decarbonization and silica sol impregnation-sintering (SIS) process. Well-distributed hierarchical pores are built to heighten thermal insulation properties by the integrated decarburization of graphite coupled with free carbon. High-yield SiOCnws, with high surface activity, are first cultivated via graphite-assisted vapor-solid (VS) mechanism without transition metal catalysts. They interconnect to form intricate 3D meshwork by graphite-assisted melt-spinning and have good compatibility with ceramic matrix and SiO x coatings by carbothermal reaction. Hierarchically porous SiOCnws/SiC(rGO) 40 % PDCs after once SIS exhibit favorable thermal conductivity of 0.27 W‧m −1 ‧K −1 and exceptional high robustness (compressive strength: 39.02 MPa, hardness: 10.27 GPa). Such composites display low reflection loss of −48.14 dB at 11.22 GHz and even good structural stability at about 1300 °C as burned by a butane blowtorch for 3600 s, shedding light on competitive components for uses in thermal protection fields.
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MICROCHEMICAL JOURNAL
·
2019
·
IF 3.206
Yuxiao Yang,Min Jiang,Kaihang Cao,Mei Wu,Chulei Zhao,Hongling Li,Chenglin Hong
An electrochemical immunosensor for quantitation of carcinoembryonic antigen (CEA) based on Au-Ag/ [email protected] nanocomposites for dual signal amplification strategy was designed. Polydopamine-coated Ag/graphene hybrids were synthesized by one-step reduction and functionalization, and the dopamine was introduced to replace some reducing agents that are harmful to organisms. Silver nanoparticles modified on the electrodes produced sensitive electrochemical redox peaks. When different amounts of protein (antigen, antibody, bovine serum protein, etc.) were adsorbed on the surface of nano-silver, the surface of nano-silver was covered. The electrochemical redox peak of silver particles decreased due to the change of the effective area of bare silver particles which could react with electrodes. In addition, CEA-antibody (anti-CEA) was immobilized into a biocompatible nanocomposite of Au nanoparticles as a conductive matrix, and CEA-antibody (anti-CEA) was combined with Ag/ [email protected] to form a dual signal amplifying element. Under optimal condition, the linear relationship was obtained from 0.001 ng mL −1 to 80 ng mL −1 between current signal and CEA concentration with a detection limit of 0.286 pg mL −1 (signal-to-noise ratio is 3). The label-free electrochemical immunosensor has been successfully applied to human serum detection due to good selectivity , stability and reproducibility.
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TALANTA
·
2017
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IF 4.162
Shiyu Li,Kui He,Rong Liao,Chunyan Chen,Xiaoming Chen,Changqun Cai
An interference-free and label-free sensing platform was developed for the highly sensitive detection of microRNA-21 (miRNA-21) in vitro by magnetic silicon microsphere (MNP)-reduced graphene oxide (rGO)-based sandwich probe. In this method, DNA capture probes (P 1 ) were connected with MNPs at the 5′ end and hybridized with completely complementary target miRNA. Subsequently, rGO was retained and induced the fluorescence quenching in the supernatant. Through the magnetic separation, the supernatant environment was simplified and the interference to analytical signal was eliminated. When DNA capture probe-modified magnetic silicon microspheres (MNP-P 1 ) were adsorbed through rGO in the absence of a target and formed a sandwich structure, the formed nanostructure was easily removed from the solution by a magnetic field and the fluorescence intensity was maximally recovered. This proposed strategy, which both overcame the expensive and cumbersome fluorescent labeling , and eliminated interference to analytical signal for guaranteeing high signal-to-background ratio, exhibited high sensitivity with a detection limit as low as 0.098 nM and special selectivity toward miRNA-21. The method was potentially applicable for not only detection of miRNA-21 but also various biomarker analyses just by changing capture probes.
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高影响因子
TEXTILE RESEARCH JOURNAL
·
2025
·
IF 1.9
Ruobing Yao,Yuting Xue,Cheng Zhang,Guangxian Zhang,Fang Xu,Yunxuan Weng
In order to protect the environment, it is very important to develop facile and repeatable methods to degrade organic pollutants in water. The reduced graphene oxide and (RGO) and titanium dioxide (TiO2)-functionalized polyethylene terephthalate (PET) fabrics (RGO-TiO2-PET) were facilely prepared using a one-step hydrothermal method. The RGO-TiO2-PET exhibited remarkable photodegradation efficiency and excellent recyclability. From the results, RGO enhanced the catalytic degradation of rhodamine B by RGO-TiO2-PET under visible light irradiation. The degradation of RhB catalyzed by TiO2-PET was 63.57% after 180 min of degradation under visible light irradiation, while it increased to 93.28% catalyzed by 5% RGO-TiO2-PET. Moreover, RGO-TiO2-functionalized PET fabric exhibited wonderful reusability, since its photocatalytic activity did not significantly decrease after five photocatalysis cycles. The significant enhancement of photocatalytic activity can be ascribed to the enhanced absorption of dyes and light, and charge transfer from the conduction band of TiO2 to the empty electronic states of RGO.
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