Journal of Materials Chemistry C
·
2025
·
IF 5.1
Tariq Ali,Yiwei Li,Bingjie Fang,Saleem Raza,Yeyuan Xiao
Photocatalysis can decolorize dye-laden wastewaters using light, but practical catalysts often suffer from narrow absorption, charge recombination, and stability limits. Here we synthesize a carbonate-intercalated cobalt–aluminum layered double hydroxide hosting cobalt-oxide nanocluster (CoAl-LDH/CoOx) via a one-pot hydrothermal route and evaluate its performance for dye decolorization and UV/H2O2 treatment of real textile wastewater. Under UV irradiation, CoAl-LDH/CoOx accelerates discoloration of methyl orange (MO) and Congo red (CR), following pseudo-first-order kinetics (e.g., MO: ∼98% removal at 5 mg L−1 in 100 min; CR: ∼100% at 100 mg L−1 in 100 min; kapp up to 0.14 min−1). On real textile wastewater (ADMI0 = 608.1), UV/H2O2 with 0.5 g L−1 catalyst achieved ∼80% American Dye Manufacturer's Institute (ADMI) removal in 120 min at 48.96 mM H2O2; outdoor sunlight tests removed 82.5% (raw influent) and 50.8% (biologically treated effluent) over 20 h. Scavenger tests and EPR spin-trapping implicate h+ and ˙O2− as dominant species under UV, with ˙OH contributing when H2O2 is present. Five-cycle tests indicate stable activity. The one-pot CoAl-LDH/CoOx heterostructure provides a robust, recyclable platform for interfacial charge-transfer-assisted photocatalysis on realistic effluents and motivates follow-up on mineralization and leaching.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jing Wen,Jiayi Wang,Jiamin Sun,Baichao Zhang,Chao Suo,Jing Cui,Xuchuan Cao,Yaxin Yang,Yuexian Hao,Shaohui Guo,Xiaojian Bai,Xian-Ming Zhang
Non-extra-artificial destructive detection of trace residual detached wall painting pigments is an important prerequisite for wall paintings restoration work. As the amount available for detection of artifacts is relatively small, the relevant information must be derived through microanalysis. To this end, the trace molecules can be concentrated and enriched for surface-enhanced Raman scattering (SERS). In this work, the ZIF-67 was Ni 2 + -acid etched into Co–Ni layered double hydroxide (LDH) hollow nanocages. After introducing Au nanoparticles (NPs), Au NPs@Co–Ni LDH core–shell structured composites with a very low detection limit for RhB (10 –10 mol L −1 ) were formed. The composites were applied to non-extra-artificial destructive detection of green, red, and blue trace mural mineral pigments, in which the main components were identified as chlorocopperite, vermilion and ultramarine, respectively. This result proves the universality of the composites to mural pigments of different types in different regions. Experimental data and finite element simulation results show that the etching treatment endowed the SERS substrate materials with a concentration effect, which led to more molecules of the substances to be measured aggregating around the Au NPs, enhanced the detection signals of the molecules, and achieved the concentration in the plasmonic field, which in turn improved their adsorption capacity and enrichment function of the target molecules. This work realizes the innovative application of the concentration effect in the SERS detection of ancient mural pigments, which is important for the analysis, identification, and restoration of mural paintings and other cultural relics.
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ACS ES&T Water
·
2026
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IF 4.5
Wencong Wang,Mingming Wang,Xianglei He,Yufeng Yang,Hui Yang,Takeshi Yanagihara
Lithium/aluminum layered double hydroxides (Li/Al-LDHs) have been widely studied for lithium extraction due to their favorable adsorption capacity and outstanding ion selectivity; however, practical applications are limited by the difficulty of SO42– intercalation–induced lithium desorption and structural delamination. In this study, siloxane networks after hydrolysis and polymerization of methyltrimethoxysilane (C4H12O3Si) were employed as cladding layers to cover the surfaces of Li/Al-LDHs, aiming to suppress SO42– intercalation and enhance the structural integrity, thereby mitigating delamination. The resistance effect is positively correlated with the thickness of the cladding layer. The adsorption capacity of the optimal sample after 8 cycles was increased by 50% compared to the pristine Li/Al-LDH. Additionally, its separation coefficients for Li/K, Li/Na, and Li/Mg─specifically 50.82, 50.47, and 149.74─significantly outperformed those of pristine Li/Al-LDH.
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CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Ming Li,Jinyun Xu,Haitao Liu,Wancun Huo,Yanyan Ji,Mingming Feng,Shuai Feng,Caixia Liu,Qingqing Zhu,Wenju Zhu,Chunming Zheng,Xiaohong Sun
Bipolar membranes (BPMs) enable efficient water dissociation into protons and hydroxide ions for sustainable energy conversion and resource recovery, yet conventional BPMs face challenges including high overpotential, environmental drawbacks of synthetic polymers, and the conductivity-stability trade-off. Herein, we develop a robust and eco-friendly BPM by in-situ embedding layered double hydroxide (LDH) nanosheets into a fully biomass-derived matrix of polyvinyl alcohol (PVA) and quaternized chitosan (QCS). The optimized membrane (BM-QPL-4) achieves a low transmembrane voltage of 0.746 V at 100 mA·cm −2 and maintains 0.713 V over 72 h at 50 mA·cm −2 , coupled with 40% enhancement in mechanical strength (33.31 MPa) and reduced swelling ratio (61.52%). These improvements arise from the uniformly dispersed LDH, which strengthens the polymer matrix while serving as built-in catalysts and ion-conductive pathways. The synergistic surface hydroxyl catalysis and interfacial electric field—described by “pore-field coupling” model—collectively lower the water dissociation energy barrier from 0.97 eV to 0.56 eV. The work demonstrates a sustainable and mechanically robust BPM platform with great potential in advanced water electrolysis and resource recovery, providing a scalable and generalizable strategy for incorporating functional nanomaterials into polymer matrices.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yuxin Zuo,Wenjie Wei,Yaran Wang,Shen Wang,Zhongjun Wang,Yu Shu,Zhiqi Liu
Linear low-density polyethylene (LLDPE) films have garnered significant attention. However, their poor thermal insulation properties and limited functionality severely restrict applications. This study prepared an LDH/LLDPE composite film (LD-1.5%K) with excellent optical properties and high-performance infrared insulation by blending γ-(methacryloyloxy) propyltrimethoxysilane (KH570) dry-modified layered double hydroxide (D200) with LLDPE. D200 exhibits a refractive index close to LLDPE. Its incorporation significantly reduces the average infrared transmittance of LLDPE films. Surface modification of D200 with KH570 promotes uniform blending with LLDPE. As a result, the LD-1.5%K film delivers outstanding optical properties (high visible light average transmittance of 90.8%, and low haze of 23.5%) The film also achieves low infrared average transmittance. This low infrared transmittance endows LD-1.5%K film with excellent heat retention (up to 4°C) and recyclable stability. Consequently, this approach promotes crop growth and offers good economic value. Applying LD-1.5%K in areas with strong ultraviolet radiation and cold climates is effective. It provides a promising solution for future cultivation in harsh environments.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hang Li,Muhammad Mubeen,Jingbao Wang,Salman Khalid,Jingmao Zhao,Baomin Fan,Yiqian Lv,Mohammad Tabish,Haiqing Liu
Zn-Al-Mg coated steel (ZM-steel) has emerged as a preferred material in automotive and infrastructure applications, yet its long-term durability remains challenged by localized corrosion in chloride-rich environments. Herein, a sustainable and scalable corrosion protection strategy based on the in-situ formation of layered double hydroxide (LDH) films intercalated with benzothiazole (BTZ) was reported. By exploiting the controlled corrosion of ZM-steel surface in BTZ-containing NaCl solution, compact LDH architectures spontaneously formed, incorporating BTZ molecules within their interlayers. The resulting hybrid coating integrated the physical barrier effect of LDH with the release of BTZ anions, enabling interfacial passivation and sustained corrosion inhibition. Comparative electrochemical tests revealed that BTZ-containing NaCl solution yielded markedly enhanced corrosion-resistance as compared to NaCl solution or bare BTZ solution, with charge transfer resistance increasing from 9.44 × 10 2 to 9.13 × 10 4 Ω·cm 2 . Moreover, epoxy-overcoating effectively suppressed filiform corrosion (FFC) of ZM-steel substrate for over 35 days. Unlike conventional hydrothermal or carbonate-assisted routes for LDH fabrication, this precursor-free strategy proceeds under ambient conditions without additional reagents, underscoring its simplicity, efficiency, and scalability. These findings demonstrate that the moderate corrosion is beneficial to the formation of LDH on ZM-steel surface.
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CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.7
Yi Ma,Huan Ge,Yong Zhang,Ning Jian,Jialing Tang,Zongkun Hu,Jing Yu,Jordi Arbiol,Canhuang Li,Luming Li,Andreu Cabot,Junshan Li
Waste plastics present a significant threat to ecosystems and human health, necessitating efficient and cost-effective solutions for their conversion into high-value products. This study introduces a novel electrochemical reforming strategy to upgrade polyethylene terephthalate (PET) into valuable chemicals, primarily formic acid, while simultaneously generating hydrogen. A highly efficient electrocatalyst composed of nano-arrays of silver and NiFe layered double hydroxide (LDH) is synthesized via a hydrothermal and photo-precipitation process on a nickel foam substrate. This advanced catalyst achieves selective electrochemical conversion of ethylene glycol (EG) as PET hydrolysate to formate and glycolate with Faradaic efficiencies of 85% and 13% at 1.5 V vs . the reversible hydrogen electrode, with a stable and high current density. Density functional theory calculations reveal that the synergistic interaction between Ag and NiFe-LDH optimizes the adsorption and desorption of key intermediates on the catalytic sites, resulting in superior activity, selectivity, and stability for the electrochemical EG oxidation reaction. These findings highlight the potential of this catalyst for sustainable plastic waste valorization and renewable hydrogen production.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Feng Li,Dan Zhou,Yaoping Guo,Keng Xuan,Yingqi Wang,Ying Zheng,Xuegang Wang,Zhanxue Sun,Yadan Guo
The contamination of water by soluble hexavalent uranium (U(VI)) requires the development of highly active and stable treatment materials. This study presents a rational design for a heterostructured photocatalyst by coupling phosphorus-modified graphitic carbon nitride (PCN) with NiAl-layered double hydroxide (NiAl-LDH). The structural theory was that P-doping would tailor the optoelectronic properties of g-C₃N₄, while integration with NiAl-LDH would establish a synergistic system for concurrent adsorption and photoreduction. As anticipated, the P modification inhibited crystal growth and improved charge separation in g-C₃N₄, elevating its U(VI) reduction rate by 3.67-fold. The NiAl-LDH component provided a high-specific-surface-area substrate for pollutant enrichment. The resulting optimal NiAl-LDH/PCN composite formed a Type-II heterojunction, which directed efficient charge transfer between the two phases. Under simulated sunlight, the composite achieved high removal efficiencies of 96.0% for U(VI) and 95.2% for Cr(VI). The performance stems from a synergy where NiAl-LDH concentrates target ions at the interface, and PCN furnishes photogenerated electrons via facilitated charge transfer, thereby accelerating the photoreduction kinetics. The material also demonstrated robust reusability and effectiveness in treating actual wastewater, highlighting its strong potential for practical heavy-metal-ion remediation.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Zhenyu Yan,Wenyu Gao,Junkai Wen,Biyue Xie,Jisheng Geng,Qiangqiang Jiao,Jia Liu
Ammonia (NH3) is a crucial basic raw material in agricultural and industrial production and is an ideal hydrogen carrier in future clean energy systems. The electrocatalytic synthesis of NH3 from nitrate (NO3RR) not only yields a green product but also addresses ecological pollution, serving as a mild alternative to the Haber–Bosch technique. Electrolyte cations can significantly influence the kinetics, selectivity, and energy barriers of electrocatalytic reactions by modulating the electrical double-layer structure, local electric fields, stability of reaction intermediates, and interfacial water structure. However, the influence of the electrode–electrolyte interface environment dominated by electrolyte cations is often overlooked. This study first prepared a NiFe-LS catalyst with low-spin active centers through orbital modulation and subsequently verified the effects of three different cations (Li+, Na+, and K+) on the NO3RR from aspects including charge density, intermediate interaction, and solvation effects. The results indicate that K+ has the most significant promoting effect on NH3 synthesis. The Faraday efficiency (FE) reaches a maximum of 90.60% at −0.6 V vs RHE (0.1 M K2SO4 + 500 ppm of NO3–), with a corresponding yield of 10911.11 μg/h/mgcat.. Mechanistic analysis indicates that the presence of K+ can promote the breakage of the N–O bond, reduce the reaction energy barrier, inhibit the hydrogen evolution reaction (HER), and increase both the interfacial electrostatic potential and the electron transfer from the catalyst to NO3–. This study elucidates the mechanism by which cations enhance the activity of the electrocatalytic interface and reveals the significance of the local reaction environment on the electrode surface for NO3RR, contributing to the further development of novel electrolytes and catalysts.
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PubMed
高影响因子
Coatings
·
2026
·Vol. 16
·期 8
·967
·
IF 3.4
Yuhan Liang,Lijie Chen,Mingyue Feng,Tong Zhang,Rongbang Sun,Yang Liu,Yifu Fu,Yunxiang Chen,Lan Chen
HighlightsWhat are the main findings?The Mg-Mn-Fe LDH grown in situ on the PEO coating-modified Mg alloy effectively blocks pores and introduces metal catalytic active sites.Baicalin achieves stable immobilization by forming coordination bonds with the metal ions in LDH through the oxygen-containing functional groups.The LDH/BA composite coating significantly improved corrosion resistance, along with pH-responsive drug release and near-infrared-enhanced enzyme-like catalytic performance.What are the implications of the main findings?A multi-functional modification strategy integrating “corrosion resistance, drug loading and control release” was established, which provides a novel technical solution for the long-term corrosion protection of magnesium alloys.The revealed interfacial coordination immobilization mechanism can provide theoretical references for the structural design of organic–inorganic composite protective coatings.The synergy of corrosion resistance and microenvironment stimulus-responsive functions is realized, which expands the application of LDH coatings in the modification of metal implants.Aiming at the rapid corrosion of degradable magnesium alloys in physiological environments and the insufficient long-term protection of single plasma electrolytic oxidation (PEO) coatings, Mg-Mn-Fe layered double hydroxide (LDH) and baicalin (BA)-loaded LDH/BA composite coatings were prepared in situ on PEO-pretreated ZE21C magnesium alloy substrates. BA was stably anchored on the LDH surface via coordination bonds between its oxygen-containing functional groups and laminate metal sites. Benefiting from the physical barrier of the LDH lamellar structure and the corrosion inhibition effect of baicalin, the LDH/BA coating significantly improved the corrosion resistance of the magnesium alloy matrix. The composite coating exhibited peroxidase-like catalytic activity for reactive oxygen species generation, which could be enhanced by near-infrared irradiation. It also possessed stable photothermal conversion performance and pH-responsive drug release behavior under acidic conditions. Biological characterization demonstrated that BA-loaded LDH composite coatings exert potent inhibitory effects on 143B cell proliferation. This work integrates long-term corrosion resistance, controlled drug release, and photoresponsive catalytic functions onto magnesium alloy surfaces, providing an effective strategy for developing high-performance biodegradable magnesium alloys.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Xiuyu Wang,Sijia Ren,Bingyan Shi,Liu Liu,Sam Toan,Xiaodong Wu,Sheng Cui,Xiaodong Shen
Developing efficient, stable, and low-cost photocatalysts for solar-driven CO 2 conversion is of great significance for sustainable energy. A flower-like NiAl-LDH structure with a particle size of about 3.0 μm, loaded with TiO 2 nanoparticles, is hydrothermally grown into a porous aerogel featuring an S-scheme heterojunction and an average pore diameter of approximately 13.0 nm. Under full-spectrum irradiation and without any CO-catalysts, the optimized aerogel achieves remarkably high CH 4 and CO production rates of 9.45 and 13.67 μmol·g −1 ·h −1 , representing 2.19- and 5.04-fold enhancements over pristine TiO 2 , respectively, along with excellent long-term cyclic stability. UV–vis diffuse reflectance spectroscopy and photoelectrochemical analysis clearly reveal that the S-scheme heterojunction enhances visible-light absorption and significantly prolongs the photogenerated carrier lifetime from 1.46 ns to 3.02 ns. Density functional theory calculations further reveal that compared to TiO 2 , NiAl-LDH exhibits a stronger CO 2 adsorption energy of −1.28 eV and induces significant structural deformation in the adsorbed CO 2 molecule. Band structure, electron paramagnetic resonance spectroscopy, and X-ray photoelectron spectroscopy consistently verify that before illumination, electrons spontaneously transfer from NiAl-LDH to TiO 2 , establishing a built-in electric field and inducing interfacial band bending. Upon illumination, this built-in field drives photogenerated electrons to transfer directionally from the conduction band of TiO 2 to the valence band of NiAl-LDH for recombination, thereby enabling efficient spatial charge separation and preserving high redox potentials. In situ infrared spectroscopy further reveals the CO 2 photoreduction pathway, thus supporting the proposed S-scheme-based multi-electron reduction mechanism for efficient solar fuel production
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Jiangfu Zheng,Xiaoming Li,Jinglin Ding,Xingong Li,Yiqiang Wu
Zinc aluminium hydrotalcite (ZnAl-LDH) based photocatalytic advanced oxidation processes show considerable promise for pollutant degradation. Yet, the specific role of surface hydroxyl groups in the reaction mechanism—particularly with regard to environmental and ecological risk control—remains inadequately understood. This study systematically explores the function of surface hydroxyl groups on ZnAl-LDH in the photoactivation of peroxymonosulfate (PMS). A surface-hydroxyl-rich ZnAl-LDH was synthesized using a simple and scalable coprecipitation approach. The material demonstrated exceptional PMS activation performance and a distinctive non-radical pathway, enabling complete photocatalytic degradation of nitenpyram (NTP) within 5 minutes under low PMS concentrations. Surface hydroxyls were found to be crucial in the activation process, acting as both adsorption sites for PMS and catalytic centers for its activation. Notably, the developed oxidation system exhibited marked environmental and ecological benefits, representing a green and low-carbon technology. Zebrafish assays, wheatgrass growth tests, and full life-cycle assessments consistently confirmed its eco-friendly efficacy. Ultimately, this work underscores the dual advantage of surface hydroxyl groups as active sites in catalytic oxidation: they facilitate the activation process while ensuring minimal environmental impact.
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危险品化学品经营许可证（带存储）