ELECTROCHIMICA ACTA
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2026
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IF 5.8
Dongmei Pu,Zhangzelong Zhuo,Qiwen Yong,Xiaoqiang Hu,Liang Wu,Yuejun Ouyang,Fan Zhang,Zhi-hui Xie
Deposition of a nickel-phosphorus (Ni-P) coating with excellent galvanic corrosion protection and robust adhesion onto magnesium (Mg) alloy via an environmentally-friendly pretreatment remains a challenge. This issue is addressed in this study by the in situ preparation of a phosphate anion-modified layered double hydroxide (LDH-P) film at ambient pressure throughout the process. The LDH-P layer, when sufficiently thick, efficiently separates the subsequent Ni-P alloy from the magnesium alloy, thereby electrically isolating the coating from the substrate. Moreover, phosphate anions intercalated in the LDH-P interlayer can be released via ion exchange with corrosive anions, acting as corrosion inhibitors and effectively extending the penetration time of the corrosive electrolyte, thereby decreasing the risk of galvanic corrosion. The Ni-P coating with LDH-P pretreatment (LDH-P/Ni-P) exhibited a high low-frequency impedance modulus, a low corrosion current density ( j corr , 0.480 μA cm −2 ), and a positive corrosion potential ( E corr , −399.0 mV), and remained macroscopically intact after 28 days of exposure in 3.5 wt .% NaCl solution or 240 h of neutral salt spray exposure. Furthermore, the specific surface configuration with innumerable cavities and vertically oriented nanosheets provides abundant mechanical interlocking sites for the nucleation and growth of Ni grains, thereby endowing the Ni-P coating with good adhesion. These results demonstrate that the smart and eco-friendly LDH-P primer, developed under ambient pressure, offers a promising strategy for deposition of Ni-P coatings on Mg alloys with good adhesion and durable corrosion protection.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Yi Wang,Xingjian Dai,Quan Zhou,Kailin Li,Li Feng,Weiling Liao,Yaolun Yu,Haoli Yu,Xuanping Zong,Guoxiang Lu,Yuxin Zhang
The preparation of the adsorbent plays an important role in the adsorption technology, especially the selection of adsorbents with high specific surface area and special structure is particularly critical to the entire adsorption process . Herein, a series of ternary LDHs was designed via a facile hydrothermal method , and in another word, all derived from binary CoAl-LDH by substituting with another transition metals(Ni, Zn, Fe), used as adsorbents to remove MO and CR. The adsorption capacity of the obtained ternary LDHs are better than that of the pristine CoAl-LDH, and CoNiAl-LDH stands out with the higher adsorption capacity than other ternary LDHs samples whether the dye is MO or CR. Then the effect of initial dye concentration, pH and temperature on its MO adsorption performance was systematically studied. The maximum adsorption capacity reached more than 330 mg/g under the optimal conditions (25 °C, pH=3). This work may provide a method to design the advanced adsorbents design for further enhancing the adsorption activity in the field of water environmental protection.
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Journal of Energy Storage
·
2022
·
IF 8.907
Xintao Ma,Shuo Wang,Hui Wang,Junjie Ding,Sen Liu,Zixu Huang,Wenzhi Sun,Guijing Liu,Ling Wang,Wenlong Xu
The layered structure of layered double hydroxides (LDH) is the key to its use as an electrode material , however, the lack of efficient charge exchange between layered structures severely limits the application of LDH in supercapacitors . In this work, FeCo-LDH was composited with C 3 N 4 by hydrothermal method , and a penetrating structure was built using the layered structure of the two materials. The penetrating structure provides a channel for charge transfer between FeCo-LDH layers and also solves the self-stacking problem of C 3 N 4 . The structure of the composites was explored by X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and transmission electron microscope (TEM), and the results showed that FeCo-LDH composited with C 3 N 4 and formed a penetrating structure. In addition, the electrochemical behavior of the electrode material was evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS). Electrochemical test results show that it has a high specific capacity (593 C g −1 ) at 1 A g −1 . Furthermore, in order to study the energy storage properties of the composites, the optimal composites were designed as positive electrode as asymmetric supercapacitors , and the designed asymmetric supercapacitor still has a retention rate of 83.72 % after 10,000 cycles. This attractive performance reveals that FeCo-LDH@C 3 N 4 could as an electrode material for high-performance supercapacitors .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Xiudong Zhu,Wei Guo,Zhang Wei,Zhe Sheng,Xiongchao Lin,Deping Xu,Yonggang Wang
M 3+ controls phase evolution: Al/Ga form Cu-Co alloy; In 3+ leads to CuIn, CoIn 2 , In 2 O 3 separation. • Surface hydroxyls and bridged CO provide dual CHₓ sources for C 2+ OH formation. • Medium-strength basic sites and Cu + fraction, not total basicity, govern C 2+ OH selectivity. • Smaller M 3+ radius (Al 3+ ) strengthens metal-support interaction, enhancing dispersion and performance. The modulation of trivalent cations in layered double hydroxide (LDH)-derived catalysts provides an effective strategy for tuning the multifunctional active sites for higher alcohol synthesis. In this study, a series of layered CuCoM catalysts (M = Al, Ga, In) was synthesized via alkaline co-precipitation and evaluated for higher alcohols synthesis via CO hydrogenation. The results demonstrate that the introduction of M 3 + is essential for constructing the LDH precursor structure and significantly influences the phase evolution, morphology, textural properties, reducibility, surface basicity, and chemical states of the catalysts. Among the catalysts tested, CuCoAl exhibited the best overall performance, achieving a CO conversion of 35.60%, an ethanol selectivity of 39.97%, and a C 2 + alcohols selectivity of 73.47%. Structural characterization revealed that CuCoAl had the highest specific surface area and the most uniform dispersion of Cu and Co species, which favored the exposure of accessible active sites. CO 2 -TPD, XPS, and in situ DRIFTS results further indicated that CuCoAl contained abundant surface hydroxyl groups and a higher fraction of Cu + , which promoted the formation of formate species, facilitated non-dissociative CO insertion, and enhanced CH x generation through both formate hydrogenation and bridged CO dissociation on Co sites. The superior catalytic performance of CuCoAl is thus attributed to the synergistic effect of highly dispersed Cu-Co active sites, abundant surface hydroxyl groups, and optimized Cu + /Co interfacial functionalities. This study provides mechanistic insights into trivalent-cation regulation in LDH-derived CuCo catalysts and offers a rational strategy for the design of efficient catalysts for higher alcohol synthesis from syngas. Download: Download high-res image (174KB) Download: Download full-size image
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2026
·
IF 5.9
Yaru Wen,Jihao Liu,Yuxin Tang,Junjie Wang,Qianqian Dong,Yuhao Li,Baoning Zhu,Yiming Liu,Jinghua Liu,Xiong He,Yao Lu
A Ti 4+ -doped NiFe-LDH was employed as an electrocatalyst. • It requires overpotentials of 243 and 263 mV at 50 mA cm −2 in 1 M KOH and seawater. • Ti 4+ doping modulates the LDH electronic structure, activating the lattice oxygen mechanism. • This modulation significantly improves both electrocatalytic activity and long-term stability. The oxygen evolution reaction (OER) is kinetically sluggish and unstable, severely limiting its efficiency in water electrolysis, particularly in seawater. Here, we report the growth of Ti-doped NiFe layered double hydroxide (LDH) nanosheets on nickel foam (NF) via a one-step hydrothermal synthesis. The introduction of high-valent Ti 4+ cations effectively modulates the local electronic configuration of the NiFe-LDH host, thereby tending to promote the lattice oxygen mechanism (LOM) and fundamentally accelerate the OER kinetics. Consequently, the optimal Ti 0.1 NiFe-LDH/NF catalyst exhibits an overpotential of only 243 mV at 50 mA cm −2 in 1 M KOH, with a Tafel slope of 63.4 mV dec −1 . Importantly, it demonstrates exceptional operational durability, maintaining a current density of 50 mA cm −2 for more than 100 h with a minimal potential increase of just 7 mV. In alkaline seawater, the Ti-doped catalyst shows superior activity and corrosion resistance relative to its undoped counterpart, underscoring its potential for direct seawater electrolysis. This study elucidates the critical role of cation doping in activating the LOM pathway through optimization of the electronic configuration, and offers an effective strategy for developing high-performance and highly stable OER electrocatalysts for both freshwater and seawater splitting. Download: Download high-res image (251KB) Download: Download full-size image
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Zhi-Yang Zhang,Zhong-Zhi Han,Chun-Yan Li,Chen-Zheng Yan,Song-Hai Wu,Yong Liu,Xu Han
Although incorporating nanomaterials into waterborne epoxy (WEP) coatings can enhance their barrier properties and corrosion resistance, the apparent agglomeration of nanomaterials and their poor compatibility with WEP inevitably constrain the service life and industrial applications of coatings. Herein, a multifunctional nanomaterial has been successfully prepared to improve the anticorrosion performance and service life of WEP coating. When polydopamine (PDA) is used to modify molybdenum disulfide (MoS2), the abundant catechol groups on the surface of PDA-MoS2 nanomaterials can effectively chelate metal ions, thus in turn providing active sites for the growth of layered double hydroxides (ZnAl LDH-VOx). Through this efficient design, PDA-MoS2@ZnAl LDH-VOx nanomaterials are uniformly dispersed in WEP, and the PDA-MoS2@ZnAl LDH-VOx/WEP composite coating exhibits high anticorrosion performance with a low-frequency impedance (|Z|0.01 Hz) of 7.65 × 1010 ohm·cm2 in 3.5 wt % NaCl solution after Day 180. The enhanced |Z|0.01 Hz value of the scratched PDA-MoS2@ZnAl LDH-VOx/WEP composite coating indicates its self-healing property. Moreover, PDA-MoS2@ZnAl LDH-VOx nanomaterials enhance the abrasion resistance of the WEP coating, thus contributing to the long-term service life of the coating. In the WEP coating, PDA-MoS2@ZnAl LDH-VOx nanomaterials not only improve its barrier properties but also endow it with a Cl– trapping effect and self-healing properties. This study provides new insights into the design of nanomaterials with multiple functions and the development of WEP composite coatings with long-term anticorrosion performance.
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PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Jiayu Zhang,Kun Wang,Jinglu Yu,Kaiyang Xu,Lu Yang,Jiali Rao,Shuqin Song,Yi Wang
Electrochemical H 2 O 2 synthesis via the two-electron oxygen reduction reaction (2e – ORR) offers a green alternative to the energy-intensive anthraquinone process, but its practical viability is hindered by the sluggish and low-value oxygen evolution reaction (OER) at the anode. Here, we present an energy-saving paired electrolysis strategy that replaces anodic OER with methanol oxidation reaction (MOR) using a ternary Mn-doped NiCo layered double hydroxide (Ni 0.50 Co 0.30 Mn 0.20 LDH) catalyst in situ grown on nickel foam (NF) by a one-step hydrothermal method. The optimized catalyst achieves a low MOR potential of 1.32 V RHE at 10 mA cm –2 and a formate Faradaic efficiency of 92.9%, outperforming its undoped counterpart (Ni 0.61 Co 0.39 LDH, 1.37 V RHE and 83.3%). In-situ Raman spectroscopy and density functional theory calculations reveal that Mn doping lowers the energy barrier for the Ni 2+ /Ni 3+ redox transition, facilitating the generation of catalytically active Ni 3+ species. When coupled with graphitized hydroxyl-functionalized multi-walled carbon nanotubes coated on carbon paper (CNTs@CP) as the 2e – ORR cathode in a two-electrode electrolyzer, at the operation condition of 50 mA cm –2 , the 2e – ORR||MOR system delivers a cell voltage reduction of 254 mV, enabling a 10.3% decrease in energy consumption for H 2 O 2 production, compared with the conventional 2e – ORR||OER system. Moreover, the simultaneous generation of value-added formate at the anode yields a 97.9% increase in net economic benefit. This work establishes a generalizable paired electrolysis paradigm for the decentralized, energy-efficient, and economically viable co-production of H 2 O 2 and high-value chemicals.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Mingtao Hu,Ying Wang,Beibei Zhang,Fei Jin,Hongliang Ge,Jiabing Dai,Feng Gao,Qiong Wu
Achieving a broad effective absorption bandwidth at an ultrathin matching thickness remains a central challenge in the design of microwave absorbing materials. Herein, to the best of our knowledge, an amino-acid-mediated molecular regulation strategy is introduced for the first time into conductive textile/LDH microwave absorber design. L -lysine is employed as a molecular regulator to modulate the nucleation and growth of NiCo-LDH nanoarrays on flexible conductive carbon cloth, leading to the formation of denser and more uniform vertically aligned nanoarrays from the initially loose and disordered deposits. The optimized 1.0Lys sample achieves a minimum reflection loss of −25.0 dB at 17.2 GHz with an ultrathin matching thickness of only 1.00 mm and delivers a broad effective absorption bandwidth of 4.24 GHz at 1.09 mm, demonstrating that strong and broadband absorption are realized under ultrathin matching conditions. The enhanced absorption originates from the synergistic effects of L -lysine-regulated dense nanoarrays, abundant heterogeneous interfaces, molecule-related polar groups, high-frequency dielectric attenuation, and improved impedance matching. In addition, CST-based radar cross section simulations reveal effective high-frequency scattering suppression under different observation angles, highlighting its potential applicability in complex electromagnetic environments. This work provides a previously unexplored amino-acid-mediated molecular regulation route for designing flexible microwave absorbers with broad effective absorption bandwidths at ultrathin matching thicknesses.
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高影响因子
FUEL
·
2026
·
IF 7.8
Jiarun Cheng,Chaojie Lyu,Jiaxin Yang,Senlong Zhang,Xueyan Li,Dan Zhang,Yiming Liu
Electrochemical water electrolysis stands as a viable route for hydrogen energy, yet its large-scale industrial deployment is hindered by the slow reaction kinetics of the anodic oxygen evolution reaction (OER) and the reliance on scarce noble metal catalysts. Herein, we present ruthenium-doped nickel–iron layered double hydroxide nanosheet arrays supported on nickel foam (Ru-NiFe LDH/NF) as a high-performance bifunctional electrocatalyst. The doping strategy realizes dual optimization through atomic-level electronic interactions: the electronegativity difference between Ru, Ni and Fe induces charge transfer, precisely regulating the free energy of OER intermediates adsorbed on Ni active sites while increasing oxygen vacancies; concurrently, Ru atoms themselves act as high-activity hydrogen evolution reaction (HER) sites, constructing a bifunctional structure of Ni&Ru active sites. In 1 M KOH, it necessitates overpotentials of just 249 mV for OER and 93 mV for HER at 10 mA cm −2 . The overall water splitting (OWS) system requires a total cell voltage of merely 1.57 V with Faraday efficiency close to 100% and exceptional stability. Furthermore, by replacing OER with the sulfide oxidation reaction (SOR), the cell voltage for OWS at 100 mA cm −2 decreases from 1.82 V to 1.52 V, achieving low-energy-consumption “sulfur-hydrogen” co-production. Impressively, the catalyst also maintains superior catalytic activity and prolonged stability in real seawater and even sulfide-containing seawater, demonstrating its immense prospect for practical-scale applications. This study presents a novel strategy to fabricate bifunctional catalysts and offers detailed experimental data for the coordinated development of low-energy-consumption hydrogen generation coupled with resource utilization of complex water bodies.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Hui Wen,Zhiyu Liu,Wei Qu,J. Paul Chen
Reactive nanofiltration (NF) systems that couple polyamide NF (PA-NF) with advanced oxidation processes reportedly offer a promising route for simultaneous degradation of emerging organic pollutants and desalination. However, their performance is constrained by limited catalytic activity, mass-transfer barriers, and trade-off between permeability–selectivity. Here, we develop a high-performance catalytic PA-NF membrane by introducing a layered double hydroxide (LDH) interlayer with the aim on creation of nanoconfined spaces within the internal membrane structure for enhancement in oxidant activation and mass transport. It was found that the interfacial polymerization by restricting amine diffusion can effectively be regulated, yielding a thin, defect-free PA layer enabling fast water transport and precise ion selectivity. The nanoconfinement with peroxymonosulfate markedly boosts oxidant delivery and electron-transfer efficiency, accelerating radical generation. Hence, the catalytic LDH-interlayered PA-NF membrane exhibited high water permeance (34.8 L/(m 2 ·h·bar)) and excellent ion selectivity, while simultaneously achieving nearly 100% atrazine degradation with a rate constant of 0.034 min −1 , far outperforming non-confined systems, even under natural organic matter and ionic interference. This work would provide a better solution for design of cost-effective materials for next-generation reactive NF technologies and sustainable water and wastewater treatment.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Xiaoyun Zhang,Ying Cui,Tao Qin,Muxin Liu,Jinlong Ge
The sluggish kinetics of the oxygen evolution reaction (OER) impede the development of water splitting for hydrogen production. Replacing the anodic oxygen evolution reaction by urea oxidation reaction (UOR) can reduce the thermodynamic equilibrium potential and improve the hydrogen production efficiency. In this work, a NiFe-LDH/CuO heterostructure was constructed via a two-step electrochemical deposition process for both OER and UOR. The nanorod-sheet NiFe-LDH/CuO showed fast electron transfer rate for the CuO nanorod and exposed more active sites for the NiFe-LDH nanosheet. The electron redistribution and d -band center optimization induced by the heterostructure of NiFe-LDH/CuO as revealed by DFT calculation. The synthesized heterostructure catalyst only required overpotential of 238 mV for OER and potential of 1.231 V for UOR, respectively.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121678
·
IF 7.5
Ruimin Yang,Wenning Mu,Kangping Cui
Advancing toward “dual-carbon” goals and clean hydrogen production, developing visible-light photocatalysts with high activity and durability remains a challenge. Here, Mg-doping engineered CdS/NiCoAl-LDH heterojunctions are constructed and investigated to clarify how Mg incorporation co-modulates structure, band energetics, and hydrogen-evolution behavior. Multiscale characterizations combined with density functional theory (DFT) calculations show that appropriate Mg doping strengthens visible-light absorption, suppresses photogenerated electron-hole recombination, reduces interfacial charge transfer resistance, and optimizes band alignment, with the conduction band shifting to more negative potential and the valence band shifting upward, thereby strengthening the reducing power of photogenerated electrons and enhancing the thermodynamic driving force for HER. Under 4 h of visible-light irradiation, CdS/NiCoAlMg(10 %)-LDH achieves a hydrogen evolution rate of 5984.12 μmol·g⁻ 1 ·h⁻ 1 , 2.82 times that of the undoped sample, and retains over 95 % of its initial activity after four cycles, indicating good activity and cycling stability. DFT analysis reveals that Mg partially substitutes Ni, redistributes electronic states near the Fermi level, and optimizes hydrogen adsorption at Co active sites, thereby lowering reaction barriers for the hydrogen evolution reaction. Overall, Mg doping tunes band edges, optimizes active-site electronic structure, and accelerates interfacial charge transport in CdS/NiCoAl-LDH, leading to enhanced photocatalytic hydrogen evolution under visible light.
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高影响因子
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