DESALINATION
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2025
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IF 9.8
Jundong Zhao,Shui Liu,Qingyu Lai,Lele Liu,Yunan Gao
Cationic dyeing wastewater poses severe environmental threats by releasing persistent aromatic dyes that suppress aquatic photosynthesis, accumulate in soil to inhibit plant growth, and generate carcinogenic byproducts through photodegradation or chlorination, thereby disrupting ecosystem stability. Carboxylated graphene oxide/sodium alginate-activated carbon aerogel spheres (CGO-AC/SA) were engineered to address cationic dye pollution through a synergistic integration of tailored carboxylation, hierarchical porosity, and DFT-guided mechanistic insights. The composite achieved unprecedented adsorption capacities of 650.695, 546.471, and 385.634 mg/g for methyl violet (MV), methylene blue (MB), and basic fuchsin (BF), respectively. Multi-scale analyses revealed that carboxylation amplified surface charge density ( COO − ) and enabled selective electrostatic interactions with cationic dyes, while hierarchical porosity (24.67 nm avg. pore diameter, 5.583 m 2 /g surface area) facilitated rapid diffusion kinetics (equilibrium within 16 h). DFT calculations correlated dye selectivity with electronic properties, identifying MV's low energy gap (ΔE GAP = 2.686 eV) and high dipole moment (μ = 2.004 D) as key drivers for enhanced π-π and electrostatic binding. Adsorption followed pseudo-second-order kinetics (R 2 > 0.993) and Sips isotherm models (R 2 > 0.997), confirming chemisorption-driven multilayer mechanisms. Despite robust regeneration (>78 % efficiency over five cycles via 0.10 M HCl), gradual capacity decline highlighted challenges in Ca 2+ -H + exchange stability. The aerogel's dual-function design, combining tunable surface chemistry with structural resilience, positions it as a scalable, high-performance solution for sustainable wastewater remediation.
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Science China-Chemistry
·
2025
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IF 9.7
Yang Yaqiong,Lv Tian-Run,Xue Yi-Han,Yin Zhigang,Yin Ming-Jie,An Quan-Fu
Real-time monitoring of ion content variations in humans offers a noninvasive approach to ensuring health, made possible through wearable sensors. However, challenges such as the low capacitance of the solid-contact (SC) layer and the formation of a water layer hinder the low-concentration ion detection and stable performance of these sensors. To address these limitations, a novel design is proposed using graphene quantum dots (GQD)-doped polypyrrole (PPy) nano-dendritic membranes, combined with a hydrophobic Nafion membrane, for sweat ion sensors. The GQD-doped PPy membrane serves as the SC layer, where GQD enhance capacitance and the nano-dendritic structure improves ion-to-electron transduction efficiency. Meanwhile, the hydrophobic Nafion membrane prevents water layer formation, stabilizing the sensor’s performance. This design significantly improves both the sensitivity (from 49 mV/decade to 70 mV/decade) and stability (potential drift decreasing from 1.3 mV/h to 18.7 μV/h) of the sensor. Leveraging this configuration, Na + and K + sensors are integrated onto a flexible electrode using a dispense-coupled inkjet printing technique. This enables real-time, continuous monitoring of Na + and K + concentrations in human sweat simultaneously. The proposed sensing device demonstrates strong potential for noninvasive sweat monitoring, contributing to enhanced health management in daily life.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Aniu Qian,Runze Zhao,Anning Song,Hu Shi
Faradaic capacitive deionization (CDI), which exploits pseudo-capacitive electrodes, is an appealing water-purification candidate from low-salinity desalinated water due to its fast Faradaic electro-sorption and ion intercalations. However, current Faradaic CDI faces the challenge in low salt adsorption capacity and poor selective sodium-ion (Na + ) applicability. Herein, amorphous ferric phosphate (FePO 4 )-anchored on three-dimensional macro-porous Ti 3 C 2 T x network (3D FePO 4 @Ti 3 C 2 T x ) electrode is proposed without scarifying Ti 3 C 2 T x electronic conductivity, wherein sodium-ion captured FePO 4 provided abundant Na + adsorption site for enhancing desalination capacity and Na + selectivity. Simultaneously, highly-interconnected channels accelerated electron/ion transport to enable effective Na + intercalation in electro-sorption. Accordingly, the assembled FePO 4 @Ti 3 C 2 T x //activated carbon (AC) asymmetric CDI device delivered a typical Na + -intercalated behavior with high desalination capacity of 65 mg g −1 , in which electric current generation could power a blue light-emitting diode (LED) screen. Importantly, the asymmetric CDI device enabled an evident Na + selectivity over the Al 3+ with high separator factor up to 6.3 in binary mixture feed of Na + and Al 3+ . This study offers a new idea to achieve high desalination performance and sodium-ion selectivity via 3D framework supported ions-capture structure in seawater desalination.
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高影响因子
Microstructures
·
2025
·Vol. 5
·期 4
·N
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IF 9
Qijiayi Guo,Chao Qiu,Yang Zhang,Jing Li,Zhixiang Chen,Fulong Li,Weifeng Liu,Xinlong Tian,Xiaodong Shi
Zinc-iodine batteries (ZIBs) are considered a promising energy storage system, but are still plagued by low energy density and rampant side reactions originating from active H2O molecules in the liquid electrolyte. Realizing the coupled redox reactions within I-/I0/I+ species, i.e., four-electron transfer reactions, is deemed an effective strategy for boosting the energy density of ZIBs, which is mainly blocked by the rapid hydrolysis of nucleophilic I+ ions. To address these issues, urea with diamine ligand sites (-NH2) was introduced into the liquid electrolyte [urea electrolyte (UE)] to achieve durable four-electron ZIBs. As demonstrated by the spectroscopic characterization results, -NH2 groups can bundle the active H2O molecules by reconfiguring the hydrogen bonds, and provide additional electrophilic ligand sites for I+ ions. Based on these advantages, both the side reactions on the Zn anode and the I+ hydrolysis reaction on the I2@AC cathode are remarkably mitigated, and four-electron transfer is realized at low zinc salt concentrations. As a result, the optimized UE electrolyte effectively stabilizes the zinc metal anode, and endows the I2@AC cathode with a high reversible capacity of 187.2 mAh g-1 after 250 cycles at 1 A g-1. The disclosed intermolecular force modulation strategy in this work will offer a comprehensive perspective for the future design of liquid electrolytes for high-energy-density ZIBs.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Fang Liu,Shiqing Zhang,Shaokai Ma,Zihang Cao,Ying Li,Yuanhui Ma,Xuewen Xu,Jun Zhang,Yanming Xue,Chengchun Tang
Hydrogen spillover in supported metal electrocatalysts has garnered considerable attention due to its potential to bypass the constraints set by the Sabatier principle and improve the performance of hydrogen evolution reaction (HER) processes. Nonetheless, reducing the energy barriers associated with hydrogen spillover remains a challenge. In this study, we designed a boron carbon nitride (BCN) material as a support for Pt (Pt/BCN), aiming to lower the reaction barriers of hydrogen spillover and serve as an efficient HER electrocatalyst in acidic media. In the HER process, Pt/BCN achieved 10 mA cm −2 at 26 mV, with a Tafel slope of 24 mV dec −1 , and also demonstrated outstanding stability. Electrochemical analyses, in-situ Raman spectroscopy, and density functional theory calculations demonstrated that adsorbed H* species migrate from Pt to BCN via a hydrogen spillover mechanism, thereby accelerating the H* desorption kinetics. Furthermore, applied as the cathode in a proton exchange membrane electrolyzer, Pt/BCN achieved 0.5 A cm −2 at a cell voltage of 1.67 V and maintained stable operation for over 60 h. This study provides new insights into developing efficient HER electrocatalysts for acidic media by optimizing hydrogen spillover effects.
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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
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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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ChemistrySelect
·
2025
·Vol. 10
·期 26
·e00237
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IF 2
Xiaoyue Li,Zhiyuan Wang,Tao Zhang,Yang Dong,Enqi Sun,Tianbo Fan,Hongfan Guo
Graphical Change from none to one hundred percent just by a simple calcination : Directly using graphene to support gold nanoparticles gives no catalytic activity. But if the graphene support just undergoes a very simple thermal treatment for removing some oxygen-containing groups on it, a full conversion can be obtained within only half hour. Graphene is a promising support material for gold (Au) catalysts and its surface functional groups may play important roles in Au catalysis. By using alcohol oxidation with molecular oxygen as the probe, this work reveals that the oxygen-containing groups on the graphene support significantly affect the Au catalysis. The carbonyl groups can totally deactivate the catalysts. Just by thermally treating the graphene at suitable conditions to remove the carbonyl groups, the catalytic performance of the Au catalysts can be greatly improved. Even a full conversion can be obtained in a very short reaction time (just 0.5 h), when the oxygen content of the graphene support decreases from the initial 6.67% to 2.58% with the almost disappearance of C═O groups. The mechanism is also analyzed. Despite poisoning the present catalytic reaction, the Au-support interaction elucidated in this work may be beneficial to some other catalytic reactions with different reaction mechanism. Thus, this work helps to enhance the catalytic activity of graphene-supported Au catalysts, according to the applied catalytic reactions.
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Energy & Environmental Science
·
2025
·
IF 30.8
Shang Liu,Shiteng Li,Qijun Yang,Meng Lin
Significant progress has been made in enhancing solar interfacial evaporation (SIE) performance at the laboratory scale, however, translating these improvements to meter-scale systems suitable for practical deployment remains limited by challenges, including material scalability, thermal losses, and non-uniform water distribution. Addressing these issues is essential for the development of modular, meter-scale evaporators as baseline units for industrial-scale desalination systems. This study presents a solar multi-stage interfacial evaporation (SMIE) device with a 1 m² active area designed to address the key limitations associated with large-scale operation systematically. The device integrates: (i) a scalable photothermal absorber layer based on Cu-CAT-1 metal-organic framework or carbon black, (ii) an inverted multi-stage configuration with optimized thermal insulation to reduce energy loss and enable latent heat recovery, and (iii) structured wicking channels engineered to maintain spatially uniform water transport. Under 1-sun illumination in a controlled laboratory setting, a 100 cm² prototype achieved freshwater production rates of 5.45 kg m-2 h-1 with deionized water and 3.9 kg m-2 h-1 with 3.5 wt% saline water. Outdoor testing of the full-scale 1 m² device yielded an average water production rate of 3.5 L m-2 h-1 (32 L m-2 day-1) and an evaporation efficiency of 345%. These results confirm that the proposed SMIE design maintains high performance at increased scales and under realistic environmental conditions. A techno-economic analysis further identifies the critical role of reducing material costs, particularly the photothermal absorber and porous membrane, to enhance economic feasibility. The work provides a scalable approach to solar-driven desalination, relevant for future modular deployment in distributed and off-grid water purification applications.
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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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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yuqiao Zhao,Geyuan Jiang,Suqing Zeng,Lisha Sun,Haipeng Yu,Dawei Zhao
Ultrathin devices represent a significant advancement in materials science and technology, playing a crucial role in wearable electronics, smart healthcare, and human-computer interaction. However, achieving mechanical durability, interface stability, and performance trade-offs remains challenging. Herein, the study reports a scalable layer-by-layer exfoliation strategy for the rapid and patterned fabrication of ultrathin cellulose ionogel devices, employing a solvent-induced assembly of cellulose molecules and active substances. The resulting freestanding devices, with a thickness of 12.46 µm—approximately one-ninth the thickness of human hair, exhibited desirable mechanical tensile strength (6.5 MPa), high pressure sensitivity (75.82 kPa −1 ), low impedance characteristics (5.83 Ω at 1 kHz), and outstanding interfacial stability, as evidenced by the ability to endure 500 cycles of tape stripping. Furthermore, due to effective self-healing and controllable induced peeling characteristics, the study is able to conduct the patterned fabrication of various ultrathin devices without the limitation of active materials. This peeling strategy based on sustainable resources offers a valuable solution for designing and optimizing ultrathin electronic devices without requiring substantial time or cumbersome processing.
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Journal of Environmental Chemical Engineering
·
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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