Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Siyu Liu,Wenjuan Chen,Yali Wang,Chunsheng Liu,Suping Cui,Qunyan Li,Zuoren Nie,Qi Wei
Advanced materials for oil-water separation have attracted a great deal of attention recently. This work incorporated expanded graphite (EG) granules into the framework of monolithic cellulose nanofibril (CNF) aerogels using polyvinyl alcohol (PVA) (together with glutaraldehyde (GA) in some cases) as crosslinkers to make them recyclable in oil-water separation. The methyltrimethoxysilane (MTMS) modified EG/CNF/PVA/GA composite aerogels (M-EG/CNF/PVA/GA) exhibit an interconnected 3D hierarchical pore structure with a porosity of 97.11 %, showing a high adsorption capacity for various oils (i.e., trichloromethane, 44.12 g/g; real waste machine oil, 18.38 g/g), being able to separate 100 % of light oil (hexane) and heavy oil (trichloromethane) from an immiscible mixture of oil and water, 74.29 % of soybean oil, and 25.71 % of real waste machine oil from the emulsions of oil-in-water (100 g/L) by static adsorption, and 94.35 % of soybean oil, and 58.46 % of real waste machine oil from the oil-in-water emulsions(100 g/L) by dynamic adsorption. Acting as 3D filters, the polydimethylsiloxane (PDMS) functionalized EG/CNF/PVA composite aerogels (P-EG/CNF/PVA) manifest an outstanding continuous separation performance for the immiscible oil-water mixture based on filtration. For the continuous separation driven by gravity, a constant permeate flux at approximately 5600 L/m 2 h is obtained for repeated separations, the water retention time fluctuates around 20 s, and the separation efficiency reaches 100 %. The permeate fluxes range from 50 to 107 L/hg for the vacuum-driven separation, and the filtrates are free of water uptake. The composite aerogels demonstrate favorable recyclability in adsorption and filtration-based oil-water separation.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Fan Li,Shang Sun,Lina Ma,Wenjing Zhang,Min Zhou,Yu Fu,Hengrui Guo,Xueying Su,Jinliang Shi,Hao Luo,Yang Yang
The intrinsically low electrical conductivity of elemental iodine and its slow redox kinetics represent two significant obstacles that hinder the commercialization of aqueous zinc-iodine batteries. These challenges can be addressed by modulating the adsorption-desorption equilibrium of iodide ions in the active material. This study presented a synergistic strategy of “Electronic Modulation” and “Phase Transition Engineering” to optimize the catalytic adsorption-desorption dynamics. A dual-designed Fe ions doped VO 2- x heterostructure anchored on reduced graphene oxide (Fe-VO 2- x /rGO) is demonstrated to synchronously adjust iodine adsorption and boost redox kinetics. The Fe-induced electronic structure modulation elevated the d-band center of vanadium, creating catalytic sites to promote the desorption of iodide ions and facilitate their diffusion. Concurrently, the phase transition from VO 2- x to V 2 O 5- n within the heterostructure establishes a 3D conductive network, synergizing with rGO to ensure rapid ion/electron transport. This “adsorption-catalysis-transport” collaborative mechanism enabled the Fe-VO 2- x /rGO cathode to achieve an ultrahigh capacity retention of 81.48% after 60,000 cycles at 20 A g −1 , surpassing state-of-the-art zinc-iodine systems. The work provides a paradigm for manipulating interfacial dynamics through electronic and crystallographic dual regulation in conversion-type batteries.
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Advanced Materials Interfaces
·
2025
·Vol. 12
·期 15
·e00421
·
IF 4.4
Hengyu Pan,Lingmei Zhu,Huijie Wei,Chang Gao,Maolin Zhou,Tiance Zhang,Qiang Luo,Boyang Tian,Jianhua Wang,Yongping Hou,Yongmei Zheng
A bioinspired spider silk fiber (i.e., PCLC) is presented by introducing the zwitterionic hydrogel poly-[2-(methacryloyloxy)ethyl] dimethyl-(3-sulfopropyl)ammonium hydroxide (PDMAPS) and CAU-10-H used as carriers of hygroscopic salt Lithium chloride (LiCl), and the addition of carbon black (CB) nanoparticles makes the prepared fibers have photothermal effect. PCLC fiber achieves the moisture absorption capacity of ≈1.49 – 1.99 g g −1 after 2 h adsorption at ≈40% relative humidity (RH). The temperature of a single PCLC knot can rise to 46.4 °C for ≈3600 s, and the temperature of a batch of PCLC spider knot fibers can rise to 112.1 °C for ≈3600 s (under ≈1 sun illumination), which has excellent photothermal effect. Water collection is conducted for five consecutive days with a daily collected amount of ≈1.87 g g −1 . The PCLC fiber shows good water vapor adsorption reversibility after 10 consecutive adsorption-desorption cycles, the moisture absorption can be stabilized at ≈1.9 g g −1 , and the water vapor desorption capacity reaches ≈1.73 g g −1 (under ≈1 sun illumination, exhibiting water vapor desorption efficiency of ≈92.1%).
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COMPOSITES PART B-ENGINEERING
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2025
·
IF 14.2
Bingbing Qiu,Donghui Zhang,Ruiming Fang,Yanfang Wang,Banglong Shen,Junhao Dai,Huaqiang Chu
Electrocatalytic hydrogen production is a green and feasible method for obtaining hydrogen energy. However, the bottlenecks of high cost, low catalytic activity and inferior stability urgently need to be addressed, and constructing advanced catalysts with optimized microscopic morphology and crystal structure is a feasible and effective strategy to overcome this barrier. Herein, an artful strategy of in-situ grown coupled with N doping and C encapsulation was employed to obtain the NC/NiO–Mo/NF with biomimetic cattle stomach-liked porous structure, which can offer shortcut for ion transportation and expose more active sites for H∗ adsorption. Particularly, the constructed NiMoO 4 –NiO heterojunction in NC/NiO–Mo/NF can significantly boost the hydrogen evolution activity. Meanwhile, the density functional theory (DFT) confirm that the construction of the crystalline-amorphous heterojunction induces electron transfer from NiMoO 4 to NiO, promoting a downshift in the d-band center, thereby achieving a near-thermoneutral free energy for the hydrogen evolution reaction (HER). The de-signed electrocatalyst exhibits exceptional HER activity, with a small overpotential of 48 mV to achieve a current density of 10 mA cm −2 . It is important that NC/NiO–Mo/NF exhibits exceptional HER stability, with current density of 50 mA cm −2 for 100 h. The finding provides a feasible strategy for the fabrication of nonprecious-metal-based HER electrocatalysts with high activity and stability toward industrial water electrolysis.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2025
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IF 4.9
Chunyu Wu,Zhiqiang Wei,Meijie Ding,Meipan Zhou,Yanxia He,Ke Huang,Qingpan Liu,Jinglong Bai
Transition metal phosphides are regarded as ideal electrode materials for high energy density supercapacitors due to their high theoretical specific capacitance and multi-electron redox properties, but they still face challenges such as low utilization of active sites, high resistance to ion diffusion, and structural collapse during cycling. In this study, we propose a three-dimensional nickel-cobalt phosphide nanosheet array design strategy based on ammonium fluoride (NH 4 F) modulation, and vertically aligned three-dimensional porous nickel-cobalt-phosphide nanosheet arrays (F5–NiCoP/NF) were constructed in-situ on nickel foam substrates by a template-free hydrothermal-phosphorization two-step method. Its superior electrochemical performance stems from bimetallic synergy and the high conductivity of the phosphide. Vertical nanosheet arrays build a three-dimensional conductive network to reduce ion diffusion resistance, and abundant pores significantly accelerate charge transport and expose abundant electroactive sites. Notably, this approach simultaneously simplifies the preparation process and reduces the cost. Benefitted from these merits, the F5–NiCoP/NF electrode achieves a high specific capacitance of 3244 F g −1 at a current density of 1 A g −1 , a capacity retention of 75.69 % at a high multiplicity of 10 A g −1 , and retains 81.44 % of its initial capacity after 10,000 cycles. The assembled asymmetric supercapacitor F5–NiCoP/NF//AC exhibits an energy density of 48.37 Wh kg −1 and a power density of 800.04 W kg −1 .
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ADVANCED MATERIALS
·
2025
·
IF 26.8
Yipeng Liu,Rui Feng,Yuyao Zhao,Xiaoya Guo,Jinghan Ding,Sibi Liu,Yijin Wang,Jinmeng Zhu,Xuanhua Li
Solar-driven sorption-based atmospheric water harvesting (SS-AWH) offers promise for addressing global freshwater scarcity. However, the SS-AWH heavily relies on favorable and sustained solar irradiation; yet real-world solar irradiation exhibits significant spatiotemporal fluctuations, limiting its sustainable application, as non/low-light conditions sharply reduce water productivity. This constraint is fundamentally due to the singleness of the water release pathway via photothermal desorption. Here, a novel dual-mode bio-based Janus aerogel (DBJA) is presented, enabling efficient, all-weather, multi-scenario atmospheric water harvesting via selectively solar-driven and compression-activated water release. The Janus structure optimizes mass/heat transfer between hygroscopic and photothermal domains, achieving the most balanced adsorption–desorption kinetics and compression-recovery strength for solar-mechano symbiosis. Under favorable sunlight, DBJA demonstrates a competitive water release efficiency of 1.32 g g −1 day −1 outdoors. Crucially, without solar irradiation, DBJA achieves a total water productivity of 12.80 g g −1 over 5-cycle adsorption-compression with 98% volume recovery and is stable within 50 cycles. Enhanced physical inlay and multiple chemical interactions ensure limited leakage of Li + ions during compression, and the collected water easily conforms to the World Health Organization (WHO) drinking water standards. This work provides a flexible approach for sustainable atmospheric water harvesting beyond solar reliance through multi-mode synergy and gradient architecture.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Haofeng Zhu,Juan Wu,Zijian Tong,Qiuyue Zhao,Qinghua Zhou,Anping Zhang,Jianqiang Sun
The continuous accumulation of metallic nanoparticles and pesticide residues in agroecosystems poses potential risks to food safety and plant health, yet their potential interactive toxicity remains poorly understood. Here, we investigated the mutual effects of zinc oxide nanoparticles (ZnONPs) and the imidacloprid (IMI) on their bioaccumulation, phytotoxicity and the underlying molecular mechanisms in lettuce. After 14 days of exposure, co-exposure to ZnONPs and IMI significantly aggravated phytotoxicity compared to individual treatments, as evidenced by greater biomass reduction, elevated oxidative stress, and intensified metabolic disruptions. Additionally, mixture treatments significantly increased both Zn and IMI accumulation in shoots, indicating enhanced uptake and upward translocation due to their coexistence. The biotransformation of IMI into 5-OH-IMI was enhanced by ZnONPs by 5.8–130 % in lettuce, with the magnitude depending on particle size and IMI concentration. For the comparison between different particle sizes, 90 nm ZnONPs led to higher Zn and IMI accumulation in shoots, whereas 30 nm ZnONPs more efficiently enhanced IMI metabolism. These accumulation patterns were closely linked to the distinct metabolic reprogramming. Co-exposure uniquely activated pathways related to amino acid and energy metabolism, indicating increased amino acid turnover and elevated energy demand for detoxification and damage repair. Altogether, the findings provide new mechanistic insights into nanoparticle–pesticide interactions in edible plants and emphasize the need to consider co-contaminant scenarios in environmental risk assessment.
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高影响因子
RARE METALS
·
2025
·
IF 11
Arishi Mohammad
Engineering the morphology of spinel mixed metal oxides is a critical strategy for developing high-performance hybrid supercapacitors as they enhance both energy storage performance and cyclic stability. Herein, we present a simple, binder-free method to fabricate hierarchical, pineapple-like CuCo 2 O 4 nanostructures on carbon fibers via low-temperature wet-chemical method. By utilizing a combination of hexamine and urea, we tailored the morphology and crystallinity of CuCo 2 O 4 , improving ion accessibility and interconnectivity, which led to superior electrochemical performance compared to individual components. Particularly, the pineapple-like CuCo 2 O 4 demonstrated diffusion-dominated behavior, achieving a higher specific capacitance of 745 F g −1 at 1 A g −1 and excellent cycling stability. Moreover, a hybrid supercapacitor was fabricated using diffusion-type CuCo 2 O 4 electrode and activated carbon as the capacitive electrode, which exhibited good synergy in delivering excellent energy storage performance. The device achieved a specific capacity of 140.5 C g −1 at 0.5 A g −1 and an energy density of 45.5 Wh kg −1 with a high-power density of 5950 W kg −1 . Even at a high current density of 10 A g −1 , the hybrid supercapacitor maintained excellent rate capability and remarkable cycling stability (89.6% retention after 10,000 cycles), demonstrating efficient charge storage and transfer. Benefiting from high voltage and energy density, the fabricated hybrid supercapacitors successfully powered various LEDs, illustrating their potential for real-world applications. Our work demonstrates the importance of spinal-type nanostructure engineering to achieve enhanced electrochemical performance, providing a straightforward pathway for developing next-generation supercapacitors and battery materials. Graphical abstract
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 9
·1-12
·
IF 2.4
Peng Zhou-Xin,Wu Yu-chen,Xiao Shi-Yun,Zhou Hua-Lan,Wang Sheng-Kang,Wang Xue-Song
Low-cost nickel catalyst (Ni@C/C) derived from a metal organic framework (MOF) was synthetized for the hydrodeoxygenation (HDO) of biomass-derived vanillin. Unlike expensive noble-metal catalysts, Ni@C/C achieves full conversion of vanillin to 2-methoxy-4-methylphenol (MMP)—a key biofuel precursor—under mild conditions (180 °C, 2 MPa H₂). Ni@C/C exhibited excellent catalytic activity for the HDO of vanillin in isopropanol. Moreover, the main product of vanillyl alcohol (VA) under N 2 was 4-(isopropoxymethyl)-2-methoxyphenol (iPMP). The possible mechanism of vanillin by using Ni@C/C catalyst was that Vanillin was hydrogenated to generate VA, and VA was hydrogenated on Ni@C/C to generate MMP by two HDO paths: (1) VA was directly HDO to generate MMP; (2) VA was hydrogenated with isopropanol to generate iPMP by dehydration, then iPMP was hydrogenated to produce MMP. The Ni-based catalyst is relatively cheap and the preparation method is facile, green, and easy to scale up, thus achieving a low-cost transformation of biomass to bio-oils and chemicals. Graphical
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Meng Hu,Jiwei Pang,Yuan Tang,Mengdong Ma,Junwen Huang,Penghui Li,Lu Shi,Yan Zhong,Julong He,Jianning Ding
Amorphous carbon exhibits superior performance over its crystalline counterparts due to its unique structural configuration characterized by short-to-medium-range ordered and long-range disordered structure, which fundamentally expands its potential applications in advanced technological fields. The exploration and preparation of novel bulk amorphous carbon materials through innovative synthesis approaches remain crucial in materials research. Here, we successfully synthesized bulk amorphous carbons composed of onion-like carbon structures embedded in disordered graphene networks prepared via spark plasma sintering of carbon black at a pressure of 50 MPa and temperatures ranging from 1700 to 2200 °C. The bulk amorphous carbon demonstrates a unique combination of low density and exceptional mechanical and electrical properties. The sample synthesized at 2200 °C exhibits superior mechanical properties with nanoindentation hardness of 603 MPa, Young’s modulus of 6.78 GPa, compressive strength of 169 MPa, and flexural strength of 69 MPa, comparable to the commercial ISO-68 graphite from Toyo Tanso Co., Ltd. In addition, this bulk amorphous carbon exhibits excellent electrical conductivity, reaching 9.3 × 103 S/m at room temperature. This type of bulk amorphous carbon demonstrates particular promise for advanced applications in aerospace engineering, energy storage, electronic devices, and precision machinery manufacturing.
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Scientific Reports
·
2025
·Vol. 15
·期 1
·1-11
·
IF 3.9
Xie Xuwen,Zhang Siyu,Zhao Zichen,Li Shulei,Niu Qing,Wu Chen,Liu Xin,Wu Yan,Zhao Xing
Polyvinyl butyral (PVB) is commonly used as an adhesive for cultural relics. However, PVB suffers from poor stability, yellowing, and decreased adhesion performance after aging. Here, graphene quantum dots (GQDs) were used as stabiliser materials to modify PVB and obtain GQDs@PVB that was improved in anti-UV/thermal aging. The yellowness index, adhesive strength, chemical structure, and thermal properties of PVB and GQDs@PVB, before and after aging, are characterized using a benchtop spectrophotometer, universal testing machine, Fourier-transform infrared spectrometer, and simultaneous thermal analyzer. The results indicate that during the aging process, GQDs@PVB shows a lower yellowness index and higher adhesive strength than that of PVB consistently. Meanwhile, it exhibits a lower intensity of carbonyl peaks generated by thermal aging with a thermal decomposition temperature increased by 19 °C. The addition of GQDs improves the photothermal stability of PVB and holds promise for the stability research of materials in relics conservation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jiahao Li,Hai Sun,Qixi Duan,Dehua Wang,Zhaolong Fang,Zhenyu Zhu,Yan Liang,Yanxing Yang,Yong Yang
The unsatisfactory kinetics of oxygen evolution reaction (OER) severely limits water splitting efficiency, while the prohibitive cost and limited availability of noble metal catalysts constrain their practical applications. Although pyrite-type transition metal sulfides have shown promise as alternative OER catalysts in recent years, their poor intermediate adsorption capacity and low electrical conductivity hinder OER performance improvement. This work presents a density functional theory (DFT)-guided strategy to develop pyrite FeS 2 nanocrystals with active (111) crystal planes, which are further combined with two-dimensional (2D) Ti 3 C 2 T x MXene nanosheets to construct a sandwich-structured FeS 2 /MXene/FeS 2 heterojunction. We demonstrate that the heterojunction exhibits superior OER activity in alkaline environments, requiring a low overpotential of 217 mV to achieve a current density of 10 mA cm −2 . By precisely controlling the exposure of active (111) crystal planes, the distribution of surface adsorption active sites is optimized, significantly enhancing the adsorption capacity of Fe active sites toward OER intermediates and refining the energy barrier of the reaction. Furthermore, the combination of 2D MXene forms Ohmic contact interface with FeS 2 , which further reduces the reaction energy barrier by optimizing interfacial electron transfer, particularly lowering the energy barrier for *OOH formation in the rate-determining step (RDS). Additionally, the novel sandwich structure and in-situ formation of surface-active FeOOH endow the heterojunction with excellent stability during OER testing. This work not only elucidates the critical role of crystal planes engineering in enhancing the OER performance of pyrite-type transition metal sulfides, but also offers a new perspective of thinking for designing OER electrocatalysts through the synergy of active crystal planes and Ohmic heterojunction construction.
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