APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
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IF 19.503
Cheng-Xin Chen,Shan-Shan Yang,Jie Ding,Guang-Yuan Wang,Le Zhong,Shuang-Yang Zhao,Ya-Ni Zang,Jun-Qiu Jiang,Lan Ding,Yan Zhao,Lu-Ming Liu,Nan-Qi Ren
In this study, the effect of chloride ion (Cl − ) on the degradation of sulfadiazine (SDZ) was evaluated using reduced graphene oxide (rGO) modified with sodium anthraquinone-2-sulfonate (AQ2S) photocatalyst ( [email protected] ), which was prepared in a one-pot hydrothermal synthesis. AQ2S molecules are small organic photoactive components, that are intercalated and immobilized on the rGO surface through noncovalent π-π stacking. Under solar light, SDZ effectively underwent 99 % photodegradation within 150 min in a Cl − -rich solution (0.5 mol/L). The [email protected] system exhibited an excellent photocatalytic removal ability for some typical contaminants. SDZ degradation was driven by 3 AQ2S*. Superoxide radicals ( O 2 − ) and dichlorine radicals (Cl 2 − ) were found to be the dominant reactive species, whereas OH and 1 O 2 have minor roles. Density functional theory (DFT) calculations confirmed the interactions between AQ2S and rGO, and the electronic structural characteristics between Cl − and [email protected] The [email protected] composite has great potential for use in treating micropollutants under saline water conditions under solar irradiation.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2026
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IF 5.2
Rawiyah Alkahtani,Ahmad Iqbal,M.S. Al-Buriahi,Muhammad Ali Hamza Shahbaz,Amir Muhammad Afzal,Nora Mobark Farhan,Sohail Mumtaz,Abhinav Kumar
A MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO was successfully synthesized through hydrothermal and modified Hummers' methods. • The integration of porous MIL-53(Al) and conductive rGO enhanced charge transport and electroactive site accessibility. • The MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO electrode delivered a high specific capacity of 1189.23C g −1 . • The hybrid SC achieved an energy density of 45 Wh kg −1 and a power density of 2773 W kg −1 . • The ternary electrode showed a low overpotential of 46 mV and a Tafel slope of 49 mV dec −1 . The rising requirement of sustainable and multifunctional electrodes for energy storage and production has stimulated significant interest in advanced electrode architectures. In this study, a MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO composite was fabricated by means of combined hydrothermal and modified Hummers approach. The composite was rationally designed by integrating the MIL-53(Al), the favorable ionic transport characteristics of NASICON-type KTi 2 (PO 4 ) 3 , and the highly conductive network of rGO, there by promoting efficient charge and ion transport. Electrochemical evaluation in a three-electrode cell demonstrated a high specific capacity of 1189.23C g −1 . When assembled into a two-electrode supercapacitor device, the material delivered an energy density of 45 Wh kg −1 at a power density of 2773 W kg −1 . The device also maintained 92% of its initial capacity with a Coulombic efficiency of 97% after 10,000 consecutive charge–discharge cycles, indicating strong electrochemical durability. In addition to its energy storage performance, the MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO electrode demonstrated promising catalytic activity for the hydrogen evolution reaction, requiring only 46 mV overpotential to achieve the targeted current density and exhibiting a Tafel slope of 49 mV dec −1 . These results highlight the synergistic contribution of the MOF, NASICON phosphate, and rGO components and establish MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO as a promising multifunctional platform for advanced supercapacitor systems and electrocatalytic hydrogen production.
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高影响因子
FUEL
·
2026
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IF 7.8
Jia-Qi Liu,Xing Fan,Ran-Ran Hou,Xiao-Hui Cao,Binoy K. Saikia,Chao Feng,Jin-Xi Wu,Xiao-Yu Dong
Selective enrichment of trace heteroatom compounds from the complex matrix of high-sulfur coal remains a major analytical challenge. In this work, a synergistically engineered ZnO/rGO nanocomposite coating was designed for hollow fiber solid-phase microextraction (HF-SPME) to enable selective enrichment of sulfur- and nitrogen-containing aromatics from thermally dissolved low-rank Indian high-sulfur coals. The coating integrates π-π interaction capability from rGO with Lewis acid-base coordination between ZnO and heteroatoms, forming a dual-interaction adsorption mechanism. After thermal dissolution (300 °C) in toluene, acetone, and isopropanol, soluble fractions were enriched under optimized HF-SPME conditions (35 °C, 30 min extraction). GC/MS and Orbitrap MS analyses demonstrated pronounced selectivity toward polycyclic aromatic hydrocarbons, heteroatom-substituted aromatics, and organosulfur species, while aliphatic compounds were weakly enriched. High-resolution MS combined with in-source collision-activated dissociation revealed preferential capture of highly conjugated (high double bond equivalent) sulfur-containing structures that are difficult to detect using conventional bulk extraction or direct spectroscopic methods. Compared with traditional coal analysis approaches, the ZnO/rGO-HF-SPME strategy provides higher selectivity, improved enrichment efficiency, and enhanced detection of trace heteroatom species. This method offers a targeted analytical platform for elucidating heteroatom occurrence in high-sulfur coal and provides molecular-level insight essential for advanced desulfurization and clean coal conversion processes.
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JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2025
·Vol. 58
·期 41
·415101
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IF 3.2
Jieling Guo,Yaqing Zhai,Tinglun Xing,Baohua Zhu,Jiejuan Yang,Yuzong Gu
Mid-infrared (Mid-IR) pulsed lasers are vital for diverse applications, yet their development is hindered by the scarcity of high-performance saturable absorbers (SAs) for Q-switching and mode-locking. While graphene and its analogs have emerged as promising candidates, their low modulation depth in the mid-IR regime hinders its practical implementation. To overcome this, we engineer a Ti:Sb2Te3/reduced graphene oxide (rGO) heterostructure via hydrothermal synthesis, leveraging synergistic Ti4+ doping and interfacial charge control. Ti4+ introduces tailored trap states in Sb2Te3 nanosheets—selected for their narrow bandgap and high mobility—suppressing non-radiative recombination and extending carrier lifetimes. This defect-mediated design achieves a significantly enhanced modulation depth of 1.8% (2.4× higher than graphene) and a nonlinear absorption coefficient of 6.84 cm GW−1 at 2.8 μm. Transient absorption spectroscopy confirms trap-assisted carrier dynamics and accelerated charge transfer. Integrating the heterostructure as an SA mirror into an Er:YAP laser generates stable 2.8 μm pulses with a 253 ns width, 163 kHz repetition rate, and 230 mW peak power at 5.5 W pump power. This work demonstrates defect-engineered Ti:Sb2Te3/rGO as a promising high-performance mid-IR SA for narrow-pulse lasers.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Gang Liu,Zixuan Fang,Tingting Feng,Ming Zhang,Mengqiang Wu
Lithium oxides (Li 2 O) possess a considerable theoretical capacity, rendering them highly promising as cathodic pre-lithiation additives. However, its decomposition voltage exceeds the charging cut-off voltage of most cathode materials , hindering its direct use as a cathode sacrificial additive. Herein, we design a facile and safe method to reduce the decomposition energy of Li 2 O at room temperature to offset the irreversible capacity loss by using a core–shell structured Li 2 O-reduced graphene oxide (rGO)-polyethylene glycol (PEG) composite (denoted as Li 2 O-rGO-PEG). The graphene oxide (GO) was heat-treated to remove oxygen functional groups to synthesize rGO, and then reacted with Li 2 O to form a Li 2 O-rGO composite. According to the DFT calculations, the density of states at the Fermi level of Li 2 O-rGO becomes continuous and features a metallic nature, which significantly improves the electrical conductivity of Li 2 O and facilitates electron conduction that modify the delithiation potential of Li 2 O. PEG was used to enhance the cohesive force between rGO and Li 2 O and to protect Li 2 O from atmospheric contamination. Moreover, in order to demonstrate the excellent pre-lithiation ability of Li 2 O-rGO-PEG composite, hard carbon (HC) with low initial coulombic efficiency (ICE) was used as the anode. In the application of LFP (Li 2 O)/HC full cell, Li 2 O was decomposed to Li + to effectively improve the initial charge capacity from 149.7 to 200 mAh/g and discharge capacity from 104.2 to 147.5 mAh/g, which are 33.6 % and 41.6 % higher than those of the pristine LFP/HC full cell, respectively. The cathode pre-lithiation method proposed in this work is simple and environmentally friendly. The successful utilization of Li 2 O as a pre-lithiation additive effectively addressed the issue of low initial coulombic efficiency of the HC, indicating excellent prospects for practical applications.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yulong Yao,Wei Yuan,Ke Liu,Donglin Li,Zhenyu Wan,Hao Xu,Chunfang Deng,Wei Zheng,Meisong Xu,Wanliang Yang
Silicon holds exceptional promise as a next-generation lithium-ion battery anode, yet its practical deployment remains hindered by drastic volume fluctuations, unstable interphases, and intrinsically poor electronic conductivity. This work reports a triple-isolation and triple-conductive hierarchical architecture (Si/CuCo-NC@rGO), which enables independent regulation and synergistic optimization of mechanical stability and electron transport. In this system, silicon nanoparticles are encapsulated within a MOF-derived N-doped porous carbon framework and are further constrained by an externally distributed network of metallic nanoparticles and reduced graphene oxide (rGO). This hierarchical configuration simultaneously ensures mechanical stability and enables efficient charge transport. The introduction of graphene effectively suppresses the aggregation of MOF-derived metal species during pyrolysis, leading to the in-situ formation of ultrasmall and uniformly dispersed Cu/Co nanoparticles (∼20 nm) embedded in a highly defective N-doped carbon matrix. This multilevel architecture provides robust mechanical buffering, abundant ion-accessible channels, and a multiscale electron-transport network, while the flexible rGO shell maintains long-range electrical continuity and interfacial integrity during repeated cycling. Such cooperative confinement markedly accelerates Li + diffusion, enhances pseudocapacitive contributions, facilitates uniform SEI formation, and significantly suppresses Si expansion from 151.7% to only 48.6% after cycling. Benefiting from these synergistic effects, the optimized composite delivers a reversible capacity of 1013.2 mAh g −1 over 700 cycles at 1 A g −1 and an exceptional rate capability of 1160.6 mAh g −1 at 5 A g −1 . This work presents a generalizable structural engineering strategy that enables the independent regulation and synergistic optimization of mechanical stability and electronic transport, offering valuable design insights for the development of long-life, high-performance silicon anodes for advanced lithium-ion batteries.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Xiao Zhang,Qi Yu,Jingmiao Zhou,Bin Luo,Jie Li,Rong Gao,Mengdan Li,Bo Cui,Jing Chen
Oil spills and oily wastewater pose severe threats to marine ecosystems and public health, necessitating the development of materials capable of high-performance and durable separation. Herein, a dopamine-based three-in-one strategy was employed to form a zeolitic imidazolate framework-8 (ZIF-8)/reduced graphene oxide (RGO) nanocoating in situ on the surface of polyurethane (ZRP) foam, thereby synthesizing a composite foam with a layered structure. The ZRP foam exhibits excellent hydrophobic/oleophilic properties, with an adsorption capacity for organic solvents as high as 98.76 g/g. Under gravity, the foam achieves an oil-water separation efficiency of 99.2% while effectively repelling water. For surfactant-stabilized water-in-oil emulsions, the compressed ZRP foam shows a separation efficiency of 99.8% and a flux of 664 L·m −2 ·h −1 . The material retains over 97% of its initial absorption capacity after 100 adsorption-desorption cycles and maintains structural and functional stability under harsh chemical (pH 5–14), thermal (−30 °C to 100 °C), and mechanical (compression, torsion, abrasion) conditions. Furthermore, the ZRP foam demonstrates remarkable photothermal conversion capability, which significantly reduces the viscosity of heavy oils under illumination and thereby enhances separation efficiency, including solar-assisted recovery of crude oil. This study offers a robust and sustainable strategy for oil-water separation and environmental remediation in oilfields.
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高影响因子
Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Bingnan Chen,Junrui Xu,Hua Sun,Xiang Zhang
Graphene/Cu composites have attracted considerable attention because they combine the excellent properties of both Cu and graphene. However, graphene agglomeration, weak interfacial bonding, and insufficient particle contact often lead to poor densification and limited overall performance of the composites. In this work, Cu matrix composites with different GO contents were fabricated by cold pressing and sintering using rGO/Cu composite powders prepared through molecular-level mixing. During the reduction process, Cu ions were in-situ transformed into nano-Cu particles embedded within the rGO interlayers or anchored onto the rGO surface. The embedded nano-Cu particles enlarged the graphene interlayer spacing, suppressed agglomeration, and strengthened the rGO/Cu interface, while the anchored nano-Cu particles promoted Cu–Cu metallurgical bonding and improved densification during sintering. The results show that CCu1 exhibited the optimum electrical conductivity of 95.10% IACS and a thermal conductivity of 327 W·m−1·K−1, corresponding to increases of 21.4% and 14.7%, respectively, compared with the pure Cu counterpart prepared under identical processing conditions. These improvements arise from the combined effects of enhanced densification and interfacial regulation induced by the embedded–anchored rGO/Cu architecture. The highest compressive strength of 280.2 MPa was achieved at 0.3 wt% GO, while the average friction coefficient decreased from 0.111 to 0.055. These results demonstrate that the interfacial structure between Cu particles can be effectively regulated through the design of rGO/Cu composite powders under cold pressing–sintering conditions. Without relying on SPS or other high-energy sintering techniques, the densification behavior, electrical and thermal transport, mechanical strength, and tribological performance of Cu matrix composites can be simultaneously improved, thereby providing a new strategy for the facile and scalable fabrication of high-performance Cu matrix composites.
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高影响因子
ACS Omega
·
2026
·
IF 5.2
Zhenhao An,Pengjie Yuan,Tuxiang Guan,Weiguo Hu,An Yang,Yue Han,Endian Guo,Liangyong Chu,Zhen Huang,Lingjie Zhang,Cheng Ji,Ningzhong Bao
The relatively low theoretical capacity of conventional cathodes has become one of the key bottlenecks in developing high-energy-density lithium batteries. Iron(III) fluoride (FeF3) cathodes are viable candidates for next-generation energy storage applications by virtue of their elevated theoretical specific capacity derived from conversion-type electrochemistry; nonetheless, their practical realization remains critically impeded by intrinsically poor electronic transport properties and substantial volumetric dilation. Herein, we employed a microfluidic assembly strategy to develop an FeF3/reduced graphene oxide (rGO) composite fabric (FGF) electrode featuring a three-dimensional network structure. In this architecture, rGO sheets are interconnected to form confined spaces that tightly encapsulate FeF3 nanoparticles into egg-roll-like structural fibers, which are further bridged to create a porous network fabric structure. Benefiting from the high conductivity, excellent mechanical strength, and moderate sheet size of rGO sheets, the resulting three-dimensional network structure not only overcomes the low conductivity of FeF3, enabling rapid electron transport, but also effectively suppresses the volume expansion and dissolution-migration of FeF3 particles during charge–discharge processes. Consequently, the as-formed FGF The electrode demonstrated superior electrochemical behavior, maintaining 98% of its initial capacity across the current density range of 0.5–5 A·g–1. Following 1000 charge–discharge cycles at 0.7 A·g–1, the active material preserved a reversible specific capacity of 72 mAh·g–1. This work not only provides an effective strategy for iron fluoride-based conversion cathodes, but also offers insights into the structural regulation of graphene frameworks for high-energy-density lithium–ion batteries, highlighting the critical importance of fluorinated graphene architectures in next-generation cathode design.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Xinyu Li,Fei Ye,Hui Zhang,Munir Ahmad,Zhenxing Zeng,Shuaijie Wang,Sufeng Wang,Dawei Gao,Qingrui Zhang
Integrating g-C 3 N 4 with narrow-band semiconductor to construct a Z-scheme structured heterojunction has been regarded as a common strategy to improve the photocatalytic performance of g-C 3 N 4 . However, limited catalytic activity increment is achieved due to the contradiction of expanding the light absorption scope of traditional photo-oxidation semiconductors (PS II) and preserving their valance band oxidative abilities. Herein, to extend the light absorption range of g-C 3 N 4 based Z-scheme photocatalyst to the whole solar spectra while without losing the high oxidative ability of this system, we select the heavy doped W 18 O 49 as PS II and provide a facile in situ hydrothermal method to elaborately fabricate an rGO decorated W 18 O 49 @g-C 3 N 4 (r-CNW) Z-scheme photocatalyst. The prepared r-CNW-2 (with optimal W 18 O 49 to g-C 3 N 4 weight ratio of 1:2) exhibits improved photocatalytic performance with H 2 O 2 generation rates of 71, 58.5 and 6.3 μmol g −1 h −1 obtained under the simulated solar light, visible light (>400 nm) and NIR light (>800 nm) irradiation, respectively, which is 1.3 and 2 times higher than those of the g-C 3 N 4 counterparts (54, 29 μmol g −1 h −1 and even not detected).such outstanding performance of r-CNW-2 could be associated with the broader light absorption, fast charge separation, and rapid redox reactions. Moreover, the r-CNW-2 also displays an excellent E-coli inactivation activity, comparable to most g-C 3 N 4 -based photocatalysts. Our work gives a new insight through trading off light absorption and redox ability to fabricate efficient Z-scheme photocatalyst for photocatalytic H 2 O 2 generation and environmental remediation.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jian Ma,Congjie Liang,Changjiang Yu,Huaming Li,Hui Xu,Yingjie Hua,Chongtai Wang
Photocatalytic reduction of hexavalent chromium (Cr(VI)) is an effective way to reduce its environmental risk. However, it remains a challenge to achieve a high removal rate in mild conditions. In order to efficiently remove Cr(VI) from water, a novel Z-scheme heterojunction composite photocatalyst rCB-20 (Cu 2 O/rGO/BiOBr, 20% Cu 2 O) was successfully prepared using a simple two-step strategy in this work. The characterizations of the catalyst show that the Z-scheme heterojunction formed between Cu 2 O and BiOBr is favorable for facilitating the separation of photogenerated carriers. The existence of rGO can reduce the resistance of electron transport. Therefore, the composite photocatalyst exhibits a very high photocatalytic activity in the photoreduction of Cr(VI). For example, using it to completely remove Cr(VI) with a concentration of 20 mg•L −1 in the pH = 4 solution only requires 40 min. Even the complete removal of the same concentration of Cr(VI) in neutral water at pH 7 does not take more than 90 min. Meanwhile, it possesses a high stability in catalytic activity and structure.
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高影响因子
Frontiers in Chemistry
·
2022
·
IF 5.545
Qian Yudan,Wu Yechao,Gu Fan,Zhou Zhiming,Huang Zaimei,Tang Xinyue,Pan Shuang,Zhang Shangcong,Chen Shinan,Zhang Qingcheng,Chen Yihuang,Wang Shun
Large-scale synthesis of graphene-based nanomaterials in stirred tank reactor (STR) often results in serious agglomeration because of the poor control during micromixing process. In this work, reactive impingement mixing is conducted in a two-stage impinging jet microreactor (TS-IJMR) for the controllable and scale-up synthesis of nickel-cobalt boride@borate core-shell nanostructures on RGO flakes (NCBO/RGO). Benefiting from the good process control and improved micromixing efficiency of TS-IJMR, NCBO/RGO nanosheet provides a large BET surface area, abundant of suitable mesopores (2–5 nm), fast ion diffusion, and facile electron transfer within the whole electrode. Therefore, NCBO/RGO electrode exhibits a high specific capacitance of 2383 F g−1 at 1 A g−1, and still retains 1650 F g−1 when the current density is increased to 20 A g−1, much higher than those of nickel boride@borate/RGO (NBO/RGO) and cobalt boride@borate/RGO (CBO/RGO) synthesized in TS-IJMR, as well as NCBO/RGO-S synthesized in STR. In addition, an asymmetric supercapacitor (NCBO/RGO//AC) is constructed with NCBO/RGO and activated carbon (AC), which displays a high energy density of 53.3 W h kg−1 and long cyclic lifespan with 91.8% capacitance retention after 5000 charge-discharge cycles. Finally, NCBO/RGO is used as OER electrocatalyst to possess a low overpotential of 309 mV at a current density of 10 mA cm−2 and delivers a good long-term durability for 10 h. This study opens up the potential of controllable and scale-up synthesis of NCBO/RGO nanosheets for high-performance supercapacitor electrode materials and OER catalysts.
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高影响因子
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