JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Zhihan Liu,Fang Peng,Xu Xiang
To tackle the rigidity and safety issues of traditional batteries in flexible wearables, this study proposes an innovative approach. It combines electrodeposition and cyclic voltammetry (CVP) oxidation to deposit nickel on carbon cloth, followed by in-situ oxidation, creating a composite electrode (OCCEN). By optimizing electrodeposition (2V, 20 min) and CVP parameters (−1.6 V–1.6 V, 1.0 mol/L KOH, 50 cycles), a porous nickel oxide layer forms on the carbon cloth. This electrode shows a high area-specific capacitance of 1736.2 mF/cm 2 at 1 mA/cm 2 . When assembled into a supercapacitor, it has excellent rate performance, retaining 71 % of capacitance at 15 mA/cm 2 , outperforming typical carbon cloth-based and most flexible electrodes. Material characterization reveals that CVP oxidation turns the surface nickel layer into porous active NiO, significantly boosting pseudocapacitance. The process also maintains carbon cloth flexibility and solves the poor interfacial adhesion problem in traditional methods, showing great mechanical stability (98.46 % mass retention after high-power ultrasonication). As a result, the assembled flexible supercapacitor operates stably under bending, retaining nearly 100 % capacitance even at 180°. This study offers a scalable, cost-effective preparation strategy for efficient flexible energy storage devices.
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Molecular Catalysis
·
2025
·
IF 4.9
Yanxing Wang,Na Chen,Xuefang Chen,Hailong Li,Lian Xiong,Hairong Zhang,Fen Peng,Xinde Chen
Biomass derivative 5-Hydroxymethylfurfural (HMF) can be selectively oxidized to generate 2,5-furandicarboxylic acid (FDCA), which is one of the important reaction pathways for the high-value utilization of biomass. However, the industrialization of the FDCA production via HMF oxidation still faces many challenges. This study found that the ruthenium(Ru) catalysts loaded on the macroporous adsorption resin (Ru/ST-DVB-560) exhibited excellent catalytic activity for the catalytic oxidation of HMF. After reacting in a weak base system for 10 h, HMF was completely converted with 96.60 % FDCA yield. The Ru/ST-DVB-560 catalysts maintained high catalytic activity after being cycled 5 times, and the FDCA yield decreased by only 3.9 %. Furthermore, the reaction products can be easily separated from the Ru/ST-DVB-560 catalysts, and the catalysts can be easily recycled and regenerated. Therefore, this study provides a stable and recyclable high-efficiency Ru/ST-DVB-560 catalyst, which is of great significance for the industrialization of the HMF oxidation to FDCA.
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OPTICAL MATERIALS
·
2025
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IF 4.2
Chenyan Lu,Dajie Zou,Yanyan Jia,Yongchang Lu,Huan Wang,Yanfeng He
In this study, a novel nitrogen-chlorine-codoped carbon quantum dots (NCl-CQDs) with low toxicity, thermal stability, good fluorescence properties, biocompatibility and high sensitivity was successfully prepared by hydrothermal carbonization. Based on the above advantages of NCl-CQDs, the NCl-CQDs was used to construct fluorescence sensing system for fluorescence probes. The maximum fluorescence emission wavelength was obtained at 470 nm when the excitation wavelength was 390 nm. The fluorescence signal was in the state of “ON”. The introduction of 2,6-Dichloroindophenol Sodium (DCIP) resulted in the quenching of fluorescence intensity due to photoinduced electron transfer between DCIP and NCl-CQDs. At this point, the color of the solution changed from brownish-yellow to light blue, indicating that the fluorescence signal was in an “OFF” state. Upon addition of ascorbic acid (AA) to the NCl-CQDs/DCIP system, the corresponding fluorescence signal was restored due to the special interaction between AA and DCIP. The color of the corresponding solution changed from light blue to colorless. The fluorescence signal was in the “on” state. Therefore, an “ON-OFF-ON” sensing system and colorimetric sensing system for AA was constructed using the NCl-CQD fluorescence probe. Under the optimized experimental conditions, the proposed methods exhibited satisfactory linear ranges. Specifically, the linear range for AA detection by the fluorescence sensor spanned from 1.2 μM to 180.33 μM, while that by the colorimetric sensor ranged from 1.32 μM to 166.55 μM. The corresponding detection limits were determined to be 0.68 μM and 0.55 μM, respectively. In summary, this sensing system could effectively enhance selectivity, sensitivity, and accuracy by preventing false positive detection results caused by environmental and system errors.
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Journal of Energy Storage
·
2025
·
IF 9.8
Shang-Jie Yu,Wei-Jing Chen,Lizhi Song,Yajie Kou,Shan Wang,Jinlong Wu,Siqi Li,Li Hua,Zhaoqing Lu
Zinc-ion batteries (ZIBs) are promising candidates for safe and environmentally benign energy storage systems because they possess a high theoretical capacity (820 mAh g −1 ), abundant natural reserves, a low electrochemical potential (−0.76 V vs. SHE), and superior safety characteristics. However, the practical application of zinc (Zn) anodes is hindered by undesirable reactions, including Zn dendrite growth, hydrogen evolution, and Zn anode corrosion. In this study, we designed a novel Zn anode protective layer through carboxylation modification of aramid nanofibers (ANFs). This engineered protective layer aims to regulate Zn deposition behavior and enhance battery cycling stability. Specifically, the carboxylated ANF (cANF) layer enhances hydrophilicity, improving electrolyte wettability at the anode-electrolyte interface. Furthermore, it effectively modulates the Zn 2+ deposition orientation, suppressing dendritic growth. Consequently, the cANF@Zn symmetric cell demonstrated stable cycling for 750 h at 3 mA cm −2 and 1 mAh cm −2 , significantly outperforming the performance of the cells with bare Zn anode. Moreover, the cANF@Zn | V 2 O 5 full cell exhibited substantially enhanced cycling stability compared to the cells using bare Zn anodes. These results demonstrate that the introduction of cANF layer is an effective strategy for mitigating critical challenges of Zn anodes.
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FUEL
·
2025
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IF 7.5
Yanxu Wang,Jiao Shen,Lijia Huang,Yi Yuan,Yaoqi Huang,Ge He,Yuan Wang,Shaojun Yuan
S-scheme heterojunction photocatalysts have emerged as a promising strategy to overcome the limitations of conventional systems by enabling efficient charge transfer while preserving strong redox capability. In this study, a novel flower-like In-TiO 2 @Bi 2 MoO 6 S-scheme heterojunction was developed via a simple hydrothermal synthesis for visible-light-driven photocatalytic desulfurization of H 2 S. The optimized In-TiO 2 -0.4@Bi 2 MoO 6 composition (molar ratio of In-TiO 2 to Bi 2 MoO 6 = 0.4) achieved complete H 2 S removal within 120 min under visible-light irradiation, exhibiting outstanding activity, operational stability, and adaptability to various desulfurization conditions. Mechanistic investigations using VB-XPS, UPS, ESR, DRIFTS and DFT calculations confirmed that the S-scheme configuration accelerated photoinduced charge separation, reduced electron migration distances, and maintained a high redox potential, thereby promoting efficient generation of reactive oxygen species for sulfur conversion. The synergistic interaction between In-TiO 2 and Bi 2 MoO 6 provides a robust platform for efficient, selective, and durable desulfurization under mild conditions. These findings offer a mechanistic framework for designing next-generation S-scheme photocatalysts for environmental remediation and energy-related applications.
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WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 237
·期 1
·9
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IF 3
Liu Yiqing,Hu Hong,Chen Chuanzeng,Xu Linghan
Generally, Fe(II) has an efficiently catalytic activity toward peroxymonosulfate (PMS), but the slow conversion of Fe(III) to Fe(II) and production of iron sludge impede the practical application of Fe(II)/PMS system. In this work, ascorbic acid (AA), a complexing agent and reductant, was introduced to Fe(III)/PMS process to facilitate the Fe(III) reduction. The decoloration of rhodamine B (RhB) was obviously enhanced in Fe(III)/PMS process with the addition of AA. Fe(III)-AA complex was firstly generated in Fe(III)/AA/PMS process via the complexation and then was reduced to Fe(II), which could catalyze PMS to yield oxidative species. Fe(IV), sulfate radical (SO 4 •− ) and hydroxyl radical ( • OH) were the working oxidants for RhB decoloration in this system, and SO 4 •− played a major role. Increasing Fe(III), AA or PMS dosage was beneficial to RhB decoloration, but their excessive concentration would hinder RhB decoloration. The existence of HCO 3 − , SO 4 2− or FA in this system showed an inhibition effect on RhB decoloration, while a facilitation effect was obtained when the high concentration of Cl − was present. This research offers a way to improve PMS activation by Fe(III) and a technology for eliminating the refractory organic pollutants from the contaminated water.
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Journal of the Taiwan Institute of Chemical Engineers
·
2025
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IF 6.3
Bing Liao,Ziyi Wang,Ruyi Chang,Zhengchun Hu,Qiuyue Ye,Wen Xu,Jiale Wu,Zhuoyuan Zhou,Wu Shen,Na Guo,Lingfeng Huang,Zhicheng Pan
Background Sulfate radical−based advanced oxidation processes (SR-AOPs) show promising prospects for the pretreatment and advanced treatment of ammonia nitrogen in landfill leachate. However, in high chloride ion environments, SR-AOPs often lack selectivity, leading to the over-oxidation of ammonia nitrogen to undesirable nitrate NO 3 − and NO 2 − rather than the desired N 2 , which remains a major challenge. Methods In this study, CoFe 2 O 4 was prepared by a gel-calcination method and the effects of chloride ions (Cl − ) and other parameters on the performance of CoFe 2 O 4 -activated peroxymonosulfate (PMS) oxidation system for the removal of ammonia nitrogen and the selectivity of oxidation products were systematically investigated. Significant findings Cl − played a crucial role in determining the ammonia removal efficiency and nitrogen selectivity. Under the optimum conditions of 30 mM of PMS, 0.1 g/L of catalyst and 20 mM of Cl − , the ammonia removal efficiency of the system was nearly 100 %, and the nitrogen selectivity reached 88.1 %. The main species in the activation process of the PMS was Co(II)-OH, and the formation of this complex was promoted by Fe(III). SO 4 · − , HO · , and chlorine species (Cl · , ClO · , and HClO) were generated in the system. Among them, SO 4 · − and HO · indirectly contributed to ammonia oxidation by reacting with Cl − to produce reactive chlorine species, which subsequently oxidized ammonia nitrogen.
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PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Jingwen Zhao,Peng Zhu,Huapeng Zhang
At present, hydrophobic surfaces with simple polymer array structures such as hemispheres, columns, trapezoidal steps, or cones (with a small top and a large bottom) can be obtained by direct negative moulding. However, complex structures, such as spherical, with large upper and small lower structures, are difficult to be obtained by negative moulding at once. Here, a new preparation strategy for hydrophobic epoxy resin coatings containing spherical microparticle arrays was proposed, using a surface porous polystyrene (PS, solvent soluble) film template-assisted negative moulding. Firstly, the preparation process of surface porous polystyrene films by dry casting from a ternary PS/polyethylene glycol (PEG)-toluene mixture would be optimized in depth, such as the dissolution & dispersion method, humidity, total concentration of polymer, PEG molecular weight, and PS/PEG mass ratio. Secondly, the structures and the water contact angle of the subsequently obtained epoxy resin array coatings would be comparatively studied with those of surface porous PS films. This work will provide a simple, efficient, and inexpensive preparation route for epoxy resin coatings containing spherical microparticle arrays.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2025
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IF 6.3
Zhiqiang Zhu,Qi Xu,Xiang Li,Shengdi Zhang,Chunxi Hai,Yuan Zhou
Ca-looping-driven thermochemical energy storage (TCES) materials are highly promising options for next-generation concentrated solar power (CSP) applications. However, the heat storage performance of pure Ca-based materials largely deteriorates after repeated cycles, reducing the operational lifespan of CSP plants. To improve the cycling stability of TCES materials, a sol–gel-based strategy is developed that introduces Al and Ce into CaCO 3 powders. After 50 cycles, the conversion rates of CaCO 3 -based composites exceed 80 % and the heat storage densities reach 1600 kJ/kg, with the composite with a Ca:Al:Ce molar ratio of 100:10:2.5 exhibiting exceptional stability. This high performance is attributed to oxygen vacancies generated by Ce 3+ and the porous structure preserved by Al 3+ throughout the cycling process. Furthermore, the adsorption energies of the CaO-based composites (pertaining to the (002) plane) are calculated using density functional theory. The results showed that the N-10 M ratio can decrease the adsorption energy of CaO for CO 2 from −1.5006 to −1.6718 eV and shorten the bond length between C CO2 and O CaO from 1.41 to 1.38 Å. Furthermore, PDOS curves of C and O on N-10 exhibit a significant shift toward lower energy regions. These results demonstrate that the addition of Al and Ce can enhance the CO 2 -capture capacity. Alongside presenting a new doping strategy, this study elucidates the microscopic physical mechanism by which Al and Ce improve the properties of CaO-based materials, offering valuable guidance for developing high-performance TCES materials for CSP applications.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Lan-Yue Cui,Han-Bing Chen,Bai-Ning Shi,Shuo-Qi Li,Cheng-Bao Liu,Hai-Ming Yu,Yu Wang,Fen Zhang,Wei-Xiang Sun,Rong-Chang Zeng
Biodegradable magnesium (Mg) alloys have received widespread attention as bone fixation implants due to their excellent biocompatibility and mechanical compatibility. However, their rapid corrosion rate in solutions containing Cl − ions and the risk of postoperative bacterial infections limit their application. Herein, a quercetin (Qu) loaded polyelectrolyte complex was fabricated on the micro-arc oxidation coated AZ31 alloy (referred to as the PVP/PEI-ICG/Qu coating) to regulate the degradation of the Mg matrix and avoid bacterial infections. The results displayed that the PVP/PEI-ICG/Qu coated substrate significantly reduced the corrosion current density to (2.86 ± 1.89) × 10 −7 A·cm −2 , which was an order of magnitude lower than that of the AZ31 alloy [(8.86 ± 1.35) × 10 −6 A·cm −2 ], due to the combined physical barriers provided by the PVP/PEI complex, the underlying MAO layer and the self-densification effect. Qu was loaded in a single step and protected by polyelectrolyte network, allowing for its release in response to near-infrared light (NIR) irradiation. Additionally, the antibacterial rate of the PVP/PEI-ICG/Qu coating reached 99.8 % ( S. aureus ) and 99.9 % ( E. coli ), thanks to the synergistic effects of Qu and its photothermal and photodynamic properties stimulated by 808 nm NIR irradiation, with a photothermal conversion efficiency of 45.2 %. Moreover, the coating demonstrated excellent biocompatibility, enhancing cell viability by up to 120.8 %. This antibacterial composite coating with good corrosion resistance and antibacterial activity provides a promising strategy for developing antibacterial Mg-based orthopedic implants.
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FUEL
·
2025
·
IF 7.5
Jiayi An,Kang Xue,Mengchao Zhao,Yumei Shu,Ji-Jun Zou,Xiangwen Zhang,Lun Pan
Thermal oxidation stability of jet fuel is an important issue when the fuel serves as the coolant for the overheating components of aircraft, and this stability can be significantly deteriorated by sulfur-containing compounds (SCCs). However, the effect of SCCs on fuel oxidation dynamics and mechanism remain unclear. In this work, we investigated the effect of SCC type on the thermal oxidation stability of the model fuel decalin using the PetroOxy device. The results show that the organic SCCs including thiols, alkyl sulfides, disulfides and benzothiophene would promote the deposition tendency, while the aromatic sulfides, thiophene and dibenzothiophene exhibit negligible impacts on deposition process. The deposition propensity of different SCCs relies on their ability to transfer polar products into deposition. GC × GC characterizations confirm that S-phenyl benzenesulfonothioate (S-PBTS) is the key intermediate in the deposition process of diphenyl disulfide. The dynamic calculation shows that the activation energy of oxidation is enhanced by hexane thiol and reduced by diphenyl disulfide. This mainly depends on the different reaction paths of the thiol and the disulfide. This work may provide guidance for recognizing the SCCs that are harmful to jet fuel thermal oxidation stability.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Hang Ye,Yuanjun Liu
Coastal shallow-water highway surfaces are subjected to composite damage caused by “wave erosion-UV aging-salt fog corrosion.” Existing sound-absorbing materials fail rapidly due to their inability to balance “wear resistance-sound absorption-weather resistance” performance, and there is a lack of systematic research on the synergistic enhancement mechanisms of multiple performance characteristics. This paper proposes a novel multi-level synergistic design strategy combining “covalent cross-linking + two-dimensional network reinforcement + foam structure regulation.” Silane coupling agent (KH550) forms Si-O-Si covalent bonds between hollow glass microspheres (HGB) and the matrix. Combined with the two-dimensional layered network of graphene oxide (GO) to support and constrain foam pores, a KHGB/GO composite membrane with “soft matrix -hard particles-gradient foam pores.” Experimental results indicate that the composite membrane exhibits an abrasion resistance index of 400 (representing a 66.64 % improvement over the unmodified membrane). Furthermore, during 7000 to 9000 friction cycles, its mass loss remained below 0.1 mg-a value lower than the lower limit of precision for the microbalance used in the analysis. The sound absorption coefficient at 5470 Hz reaches 0.9445. After 168 h of salt spray corrosion, the UPF retention rate, tensile strength retention rate, and sound absorption coefficient retention rate were 94 %, 67.71 %, and 89.96 %, respectively, achieving synergistic stability of multiple properties under extreme conditions. This provides an innovative solution for long-term noise reduction in coastal infrastructure.
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