INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Yanmei Chen,Qirtas Malik,Bolun Wang,Yu Wang,Mian Li,Tao Bo,Jianming Xue,Jianxin Zou,Qing Huang
The development of earth-abundant, low-cost, highly active catalysts to accelerate hydrogen absorption/desorption kinetics in Mg-based materials is critical for hydrogen energy applications. Here, we synthesize three MAX phases with nonconventional A-site elements─Nb2FeC, Nb2NiC, and Nb2CuC─and directly incorporate them into MgH2 matrices without hazardous HF etching. All three MgH2-10 wt % Nb2AC (A = Fe, Ni, Cu) composites exhibit a reduction in onset dehydrogenation temperature from 320 °C to approximately 190 °C, and their dehydrogenation temperature and kinetic behavior are markedly superior to Nb2AlC, demonstrating that substituting the A-site element Al with late transition metals substantially enhances catalytic performance toward MgH2 dehydrogenation. Among them, the MgH2-10 wt % Nb2NiC composite shows optimal performance, releasing ∼6.30 wt % H2 at 300 °C within 10 min and absorbing ∼5.01 wt % H2 at 175 °C within 3 min, while maintaining good cyclic stability. Experimental and theoretical results jointly confirm that Nb2NiC functions as an efficient electron-mediated catalyst, weakening Mg–H bonds and promoting H2 dissociation via interfacial electron transfer, thus significantly improving hydrogen storage kinetics.
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yunwei Li,Xiangmin Xu,Jinchao Chen,Kaiyi Hu,Xingran Zhang,Fang Li
Alkali recovery from industrial wastewater is crucial for resource sustainability, yet conventional electrodialysis technology suffers from a trade-off between hydroxide transfer and ion selectivity, alongside poor alkaline stability. Herein, we fabricated a high-performance chitosan-based composite membrane (CS-Cu) featuring charged sub-nanochannels constructed via a facile coordination strategy. The coordination between Cu 2+ and the amino/hydroxyl groups of chitosan transforms the polymer matrix into a short-range ordered structure, creating charged and confined transport pathways. Electrodialysis results demonstrate that the CS-Cu composite membranes achieve an exceptional OH − / WO 4 2 − selectivity of 227.43, significantly outperforming most reported polymer membranes. This superior selectivity is attributed to a synergistic mechanism involving enhanced electrostatic attraction from the charged short-range nanochannels walls, size sieving, and the Grotthuss mechanism within the nano-confined hydrogen-bonding network. Transition state theory analysis further revealed that the energy barrier for OH − transport is approximately 2.44 times lower than that for WO 4 2 − , confirming the kinetic advantage of hydroxide permeation. Furthermore, the composite membranes exhibit good operational stability during cycling tests. This work provides a novel strategy for designing ion exchange membranes with high-precision alkali separation for industrial alkali recovery.
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2026
·
IF 4.5
Nguyen Quang Tu Le,Van-Hien Pham,Bich-Ngoc Duong,Duy-Khoi Nguyen,Thi-Phuong-Tu Nguyen,Thien-Hoang Ho,Ngoc-Quyen Tran,Van-Phuc Dinh
Highly crystalline ETS-10 zeolite was prepared with a surface area of 250 m 2 /g and an average pore size of 1.67 nm. • Adsorption was highly pH-dependent, reaching peak efficiency at pH 5.0 for Pb(II) and pH 6.0 for both Cu(II) and Cd(II). • The Sips model best described the adsorption without being limited by concentration. • The adsorption kinetic of Pb(II) follows the PSO model, whereas the ID model controls the removal of Cd(II) and Cu(II). • The removal of Pb, Cu, Cd occurred via stoichiometric Na+/K+ ion exchange within 12-membered rings and surface complexation. Understanding adsorption kinetics and mechanisms play an instrumental role to determine the speed, efficiency, and pathways by which adsorbents remove pollutants. In this study, kinetics and mechanisms of the adsorption of Pb(II), Cu(II) and Cd(II) onto ETS-10 are investigated based on the combination of experimental, theoretical models (Langmuir, Freundlich, Sips, Pseudo-First-Order (PFO), Pseudo-Second-Order (PSO), Intraparticle diffusion (ID)), and modern analytical techniques (XRD, SEM-EDX, FT-IR and BET-BJH). Obtained results show that Sips models give the best fit with experimental data for three ions, while kinetic of Pb(II) adsorption follows PSO and kinetics of Cu(II) and Cd(II) uptakes follow ID models. The adsorption rates of Pb(II) > Cd(II) > Cu(II) during the diffusion process on the surface, whereas the ones of Pb(II) > Cu(II) > Cd(II) in the intraparticle diffusion process. The mechanisms of intraparticle diffusion, ion-exchange and complexion play mainly roles in the removal of Pb(II), Cd(II) and Cu(II). Download: Download high-res image (302KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yonggang Gang,Zijiang Zhao,Zemin Xu,Xuping Ren,Jun Wang,Wenjun Zhang,Yanhui Long,Liboting Gao,Xiaodong Li,Jianhua Yan,Hao Zhang
Ga doping constructs novel LaGaO x /Cu interfacial structure. • LaGaO x /Cu interfaces stabilize Cu + species by electronic metal-support interaction (EMSI) for methanol synthesis. • Ga incorporation promotes adsorption of H 2 , CO 2 and CO. • LOC/Cu:5Ga delivers a methanol space-time yield of 306.7 g kg cat −1 h −1 . • Ga-induced interfaces shift the reaction from a single to a dual-path mechanism. Developing efficient copper-based catalysts for CO 2 hydrogenation to methanol remains a key challenge in catalytic CO 2 utilization. Irreducible rare-earth oxides offer outstanding thermal stability and structural robustness, yet their limited activity and selectivity restrict methanol productivity. Herein, we propose a promoter-induced interfacial engineering strategy to activate La 2 O 2 CO 3 (LOC)-supported Cu catalysts by incorporating Ga as a heteroatom promoter. A series of Ga-doped LOC/Cu catalysts (denoted as Cu:xGa) were synthesized via a two-step co-precipitation method, exhibiting a pronounced dependence of catalytic performance on Ga loading. The optimized Cu:5Ga catalyst achieved a CO 2 conversion of 9.2% and a methanol space-time yield of 306.7 g kg cat −1 h −1 (3 MPa, 260 °C), corresponding to a 9.8-fold enhancement relative to undoped Cu. Comprehensive structural and spectroscopic characterizations reveal that Ga doping induces the formation of highly dispersed LaGaO x /Cu interfacial sites. The enhanced electronic metal-support interaction (EMSI) at these interfaces optimizes the electronic structure of Cu sites, facilitating reactant activation and further boosting methanol synthesis. These interfaces stabilize interfacial Cu + species, facilitating the dissociation and adsorption of reactants, and fundamentally modify the reaction pathway from a single formate route to a dual mechanism involving both the formate pathway and the RWGS–CO hydrogenation pathway. This work demonstrates an effective strategy to activate irreducible rare-earth oxide–supported Cu catalysts and provides mechanistic guidance for the rational design of efficient and stable catalysts for CO 2 hydrogenation to methanol. Efficient synthesis of methanol via a promoter (Ga)-induced interfacial engineering strategy to activate La 2 O 2 CO 3 (LOC)-supported Cu catalysts, corresponding to a 9.8-fold enhancement relative to undoped LOC/Cu catalyst. Download: Download high-res image (133KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Jing Lan,Yuran Yu,Luyao Xing,Fujun Miao,Guosheng Shao,Peng Zhang
Self-supporting Cu/TiN nano-furry serves as a superior bifunctional catalyst for ORR/OER. • DFT reveals Cu/TiN heterojunctions facilitate uniform Li 2 O 2 film growth via enhanced LiO 2 affinity. • Carbon-free catalytic system effectively suppresses Li 2 CO 3 byproduct formation, reducing overpotential. • Delivers ultralow overpotential, high areal capacity and superior stability, outperforming Au-based counterparts. The major hindrance against developing high-performance lithium oxygen batteries (LOBs) lies in their infamously sluggish redox kinetic processes involving undesirable parasitic reactions, which results in large overpotential, low capacity and inferior cycling stability. The rational catalyst design is proposed as an efficient strategy to address the above issue. Herein, we have developed a self-supporting nano-furry cathode based on a Cu foam-supported hierarchical nanotube array architecture decorated with Cu/TiN nanojunctions, which contributes to a fresh bifunctional catalytic mechanism for enhancing ORR/OER catalytic kinetics. Such an integrated cathode with Cu/TiN nanojunctions catalyst enables resilient LOBs through minimizing the energy barriers and excessive input energy to form/decompose Li 2 O 2 , outperforming similar Au-based system. DFT simulation elaborates that the Cu-based heterojunctions with favorable LiO 2 -affinity tend to promote surface deposition of uniform Li 2 O 2 film, alleviating disproportionated reaction and achieving remarkably enhanced capacity. Consequently, this rationally designed cathode for LOBs achieved high area capacity up to 25.6 mAh cm −2 with a small overpotential of 0.37 V at 0.1 mA cm −2 , and exceptional cycle stability with over 350 cycles at 0.2 mA cm −2 under a fixed capacity of 0.25 mAh cm −2 . This work provides an insightful approach towards designing efficient, clean and cheap cathode with abundant metal-based catalysts for LOBs. Download: Download high-res image (278KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Wenlong Cao,Caiyu Chen,Hai Liu,Lei Yang,Tianlong Tan,Ruiyang Xu,Chengjian Ma,Tianyu Wang,Daniel Hedman,Shigeo Maruyama,Rong Xiang,Jue Wang,Qinfang Zhang
Cluster beam deposition enables ligand free Cu-core/Zn-shell nanoclusters. • Cu@Zn nanoclusters achieve 63.1% CH 4 FE at 200 mA cm −2 in 1 M KOH. • Zn shell promotes water dissociation to enhance proton supply for CH 4 formation. • Core-shell interfacial engineering steers CO 2 electroreduction toward methane. The electrochemical reduction of CO 2 to CH 4 offers a promising pathway for closing the carbon cycle and enabling sustainable energy conversion, yet it is fundamentally limited by sluggish reaction kinetics and competing side reactions. We report the controlled fabrication of core-shell Cu@Zn nanocluster catalysts (Cu@Zn NCs) via cluster beam deposition (CBD). Molecular dynamics simulations based on the NEP89 universal neuro-evolution potential reveal a spontaneous formation mechanism of the core-shell architecture. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (AC-HAADF-STEM) further confirms uniform quasi-spherical Cu@Zn NCs with an average size of ~5.86 nm, a well-crystallized Cu (111) core, and a continuous Zn shell. In electrocatalytic CO 2 reduction, the Cu@Zn NCs achieve a CH 4 Faradaic efficiency of up to 63.1% with a partial current density of 126.2 mA cm −2 at −1.5 V vs. RHE and a total current density of 200 mA cm −2 . Mechanistic investigations combining in situ infrared spectroscopy and hydrogen/deuterium (H/D) kinetic isotope effects (KIE) analysis reveal that the Zn shell accelerates interfacial water dissociation, providing an abundant local proton source, while simultaneously strengthening *CO adsorption on Cu sites and promoting its hydrogenation to the key *CHO intermediate. This synergistic effect suppresses *CO desorption and C C coupling pathways, thereby steering the reaction toward highly selective CH 4 formation. This work highlights the effectiveness of precise interfacial engineering in bimetallic core-shell catalysts and provides mechanistic insights for the rational design of CH 4 selective electrocatalysts for deep CO 2 hydrogenation. Download: Download high-res image (151KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
SENSORS
·
2026
·Vol. 26
·期 11
·3569
·
IF 4
Xiao Liu,Pengbo Zhu,Hao Ren,Yao Wang,Jun Li,Yan Zhang,Qiao Wang,Soo Wohn Lee,Laurence A. Belfiore,Mikhail Artemyev,Jianguo Tang
HighlightsWhat are the main findings?We have successfully fabricated a novel fluorescent cotton fabric (FCF) sensor grafted with hydrophilic MPA-stabilized Cu-In-Zn-S core–shell QDs.The FCF sensor demonstrates a PL response when in contact with aqueous solutions containing various anions, including Br−, Cl−, F−, PO43−, and OH−.What are the implications of the main finding?This preparation method is simple, reproducible, and cost-effective, with broad application prospects.Negatively charged molecules and anions are widely present in the natural environment and can pose a threat to aquatic life, affecting their survival and reproduction. As the understanding of the hazards of negatively charged molecules and ions deepens, the need for real-time monitoring governs the development of highly sensitive and convenient sensing materials. Here, highly luminescent Zn-Cu-In-S core–shell colloidal quantum dots were grafted onto cotton fabric to produce a fluorescence cotton fabric (FCF) optical sensor demonstrating photoluminescence response to the presence of several anions in water, such as phosphate (PO43−), hydroxide (OH−), fluoride (F−), chloride (Cl−), or bromide (Br−). After contact with water solutions containing these anions, PL output from FCF remarkably decreases, with specific functional dependence on the concentration of the selected anions. The fluorescent fabric sensing material is easy to operate, achieving real-time detection of negatively charged groups and showing great potential for application in environmental monitoring.
✓ 已验证
DOI
PubMed
高影响因子
Catalysts
·
2026
·Vol. 16
·期 6
·512
·
IF 4.5
Xinlu Xiong,Donglin Song,Qiang Ren,Xu Xiang,Jiongliang Yuan
The electrocatalytic reduction in N2and CO2into urea under ambient conditions provides a promising strategy for sustainable nitrogen fixation and carbon utilization. However, the low activity and poor selectivity toward urea limit its practical application. Herein, a dual-ligand Cu-based metal–organic framework (Cu-BTC/NH2BDC) was constructed via ligand engineering strategy. The introduction of 2-NH2BDC modulated the electronic structure of Cu sites, generating electron-enriched Cu centers that facilitate CO2activation, while the hydrogen bonding interaction between the amino and carboxyl groups promotes the activation of N2. As a result, the optimized Cu-BTC/NH2BDC catalyst achieved a urea yield of 6.59 mmol g−1h−1with a Faradaic efficiency of 22.85% at −0.2 V versus reversible hydrogen electrode (vs. RHE), outperforming single-ligand counterparts. In situ Raman spectroscopy measurement revealed enhanced the formation of *CO, *NN, and C-N intermediates, indicating improved C-N coupling efficiency. This work provides a feasible strategy for regulating active sites in MOF-based catalysts toward efficient urea electrosynthesis.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yong Wang,Guangshuo Wang,Xiaoxiong Li,Yue Han,Yuanzhe Li,Yanlei Zhang,Yalei Li,Yusen He,Zhixiao Zhang,Yichuan Huang
The redox kinetics of lithium polysulfides (LiPSs) result from the intrinsic insulating nature of sulfur and the weak interaction between hosts and LiPSs. Constructing heterostructures with built-in electric fields is a promising strategy to accelerate charge transfer; however, the limited active sites and suboptimal electronic configuration at the interface often restrict their catalytic efficiency. Herein, we propose an atomic-level modulation strategy by incorporating isolated Cu atoms into a Mott-Schottky Ni/NiO heterostructure to create a multifunctional electrocatalytic layer for Li S batteries. The introduction of atomic Cu not only induces abundant oxygen vacancies but also triggers a selective upward shift of the d-band center, which synergizes with the interfacial electric field to optimize the electron redistribution. This electronic restructuring significantly enhances the orbital hybridization between the host and LiPSs, thereby strengthening the chemical adsorption and effectively lowering the decomposition energy barrier of Li 2 S. Consequently, the Cu-Ni/NiO modified separator exhibits superior catalytic activity, achieving a high initial capacity of 1353 mAh g −1 and an ultralow decay rate of 0.056% per cycle over 500 cycles at 1C. Even under harsh conditions with high sulfur loading (8.4 mg cm −2 ) and lean electrolyte, the pouch cell delivers a high areal capacity of 4.16 mAh cm −2 and excellent flexibility, demonstrating its great potential for practical applications. Atomic Cu sites are incorporated into the Mott-Schottky Ni/NiO heterostructure to modulate interfacial electron redistribution. Atomic Cu doping simultaneously improves electrical conductivity, optimizes the electronic structure, and enhances catalytic activity. The resulting Cu-Ni/NiO heterocatalyst delivers high polysulfide adsorption capacity and accelerated conversion kinetics, effectively suppressing the shuttle effect and boosting the overall electrochemical performance of Li S batteries. Download: Download high-res image (194KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2026
·
IF 1.8
Jiaxuan Gao,Shui Liu,Caixia Xu
A copper-based catalyst was prepared via the impregnation method using alumina as the support and subsequently modified by dielectric barrier discharge (DBD) plasma. The modified copper-based catalyst achieved acetylene conversion of 94% and acetaldehyde selectivity of 78% after 8 h of reaction and maintained high levels of conversion, selectivity, and stability over 15 h of continuous reaction. The experimental results demonstrate that the DBD plasma-modified catalyst exhibits a promotional effect on the acetylene hydration reaction compared to the high-temperature calcined catalyst. X-ray diffraction (XRD), X-ray photoelectron spectroscopy, thermogravimetric analysis (TG), transmission electron microscopy,and inductively coupled plasma-optical emission spectrometry analyses indicate that compared to the conventionally high-temperature calcined catalyst, DBD plasma modification of catalyst enhances anti-reduction capability of the active copper species, effectively suppresses copper loss and carbon deposits, due to the strong interaction between the Al 2 O 3 and Cu species, thereby significantly improving catalytic performance. Graphical Dielectric barrier discharge (DBD) plasma modification of Cu-G/Al 2 O 3 catalysts is developed for acetylene hydration. Compared with conventional high-temperature calcination, DBD plasma markedly strengthens metal–support interaction, which effectively suppresses Cu 2+ reduction, carbon deposition, and copper leaching. Consequently, the DBD-modified catalyst delivers superior performance, with 94% acetylene conversion and 78% acetaldehyde selectivity after 8 h, and significantly longer stability over 30 h, unequivocally outperforming the calcined catalyst.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Jiahang Chen,Chunrong Huang,Chaoyi Chen,Junqi Li,Yuanpei Lan
A novel silicate-based adsorbent (M-EMR) was synthesized via a hydrothermal process using electrolytic manganese residue (EMR) and calcium carbide slag (CS) in a NaOH medium. The adsorption behavior of M-EMR for Cu(II) ions from aqueous solution was systematically investigated under varying conditions. The adsorption kinetics followed a pseudo-second-order model with a high correlation coefficient (R2 = 0.9999), suggesting chemisorption as the rate-limiting mechanism. Equilibrium data were best fitted by the Langmuir isotherm (R2 > 0.999), with maximum adsorption capacities of 174.22, 185.19, and 232.56 mg/g at 288.15, 298.15, and 308.15 K, respectively. Thermodynamic analysis revealed a spontaneous and endothermic process, characterized by negative ΔG° values and positive ΔH° (41.25 kJ/mol) and ΔS° (203.88 J/mol·K). Competitive adsorption studies showed that Pb(II) significantly interfered with Cu(II) uptake, while Co(II) and Ni(II) exhibited negligible effects. M-EMR demonstrated high selectivity for Cu(II) and strong resistance to interference from coexisting cations (K+, Ca2+, Na+, Mg2+). Mechanistic analysis confirmed that ion exchange, surface precipitation, and complexation were the primary removal pathways, further supported by X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) results. Cu(II) could be efficiently desorbed using 30 mmol/L EDTA, achieving a recovery efficiency of 96.62%. This study provides a cost-effective and environmentally sustainable approach for the valorization of industrial waste and the treatment of Cu(II)-contaminated wastewater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Crystals
·
2025
·Vol. 15
·期 6
·563
·
IF 2.4
Jinyi Wang,Bowen Fan,Jincheng Yu,Mengqiong Huang,Jiana Song,Zhaokun Yang,Yuan Ji
Single-phase ternary Mn-Cu-Al alloy ribbons were fabricated by melt-spinning a Mn48Cu28Al24ingot on a rotating copper roller. They were used as dealloying precursor for forming the nanoporous structure in HCl solution. The basic dealloying behavior was examined by controlling the dealloying time from 5 min to 180 min at 50 °C. Due to the active chemical property, Mn and Al elements are easily etched in acid solutions. Meanwhile, Cu elements retained and rearranged. A three-dimensional bicontinous nanoporous structure was fabricated, with a ligament size of 55 nm~100 nm and pore size of 35 nm~85 nm. The porosity evolution of dealloyed MnCuAl alloy was divided into three stages. First, the dissolution of Mn and Al is so significant that formation of pores is dominant. Stage two, the rapid growth of both ligament size and pore size. The ligament/pore ratio is nearly unchanged. The last stage is ligament coarsening. Moreover, the electrocatalytic activity for glucose oxidation of dealloyed samples is examined. The 40 min dealloyed MnCuAl ribbon exhibited the highest sensitivity and relatively maximum current density.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）