INORGANIC CHEMISTRY
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2022
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IF 5.436
Zijing Zhang,Zhongnan Guo,Jiawei Lin,Fan Sun,Xue Han,Gang Wang,Wenxia Yuan
The newly discovered AMnBi2 (A = Ca, Sr, Ba, Eu, and Yb) materials composed of two-dimensional Bi square nets provide an excellent platform to investigate the effect of magnetism on topological band structures. Effectively tuning the magnetic interaction in AMnBi2 is of great importance to advance this issue. Here, we describe an effective route to tune the magnetism in Dirac semimetal CaMnBi2 through Cu doping. Structural analysis on CaMn1–xCuxBi2 single crystals indicates that Cu atoms occupy the Mn sites randomly, with the maximum doping level of 25%. After Cu doping, the Bi square net in charge of the Dirac band is still retained, but the Bi–Bi bond distance is markedly shortened. The antiferromagnetic interaction of CaMnBi2 is strongly weakened in the Cu-doped crystals, with the transition temperature decreased from 260 to 85 K. On the contrary, the ferromagnetic component that originated from the canted AFM is enhanced, suggesting that the spin canting in this system is tunable. In addition, the magnetoresistance is decreased upon Cu doping, probably due to the disorder in structure. Our work suggests that the CaMn1–xCuxBi2 (0 ≤ x ≤ 0.25) system can offer a suitable playground to address the interplay between magnetism and the topological state.
研究领域:
凝聚态物理
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拓扑材料
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磁性
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材料科学
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ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Yu-Ting Xu,Xiao-Feng Wang,Xin Qi,Qing-Yuan Zhao,Sheng-Jia Dai,Yi-Song Zheng,Sheng-Han Wang,Xiong-Wei Wu,Xian-Xiang Zeng
Aqueous zinc-ion batteries are considered one of the most promising energy storage technologies owing to their low cost, environmental friendliness, and safety, but they are chronically perplexed by Zn dendrites, corrosion, passivation, and more. Herein, a reactive copper phthalocyanine (CuPc) is employed to rebuild a Zn anode with Cu, acting as a physical barrier and interfacial regulator to homogenize the Zn2+ flux for smooth Zn deposition and to restrain Zn corrosion. As a result, CuPc@Zn shows polarization voltages less than 145 mV within 16 mA cm–2 and bears a cumulative areal capacity of 1020 mA h cm–2 at 10 mA cm–2/20 mA h cm–2 and repeated Zn deposition/stripping processes over 1200 h at 1 mA cm–2/1 mA h cm–2. Besides, the cycling stability of the CuPc@Zn anode when pairing with a 9,10-anthraquinone cathode at 50 mA g–1 is greatly improved from 64.8% to ∼100% after 360 cycles, about a 7.2 time increase in the life of a pure Zn-based battery, and the V2O5//CuPc@Zn batteries deliver 155 mA h g–1 (80% of its initial capacity) after 500 cycles at 2 A g–1, also surpassing V2O5//Zn batteries. This work demonstrates the superiority of the reactive organometallic interlayer in guarding the Zn anode and also increases metal anode protection in other batteries.
研究领域:
储能与转换
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电化学
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材料科学
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电池技术
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2026
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IF 4.9
Qianqian Liu,Yusong Pan,Peixuan Zou,Ling Peng,Cuilian Wei,Wenjie Luo,Run Huang,Xiuling Lin,Jun Tao
This study overcomes intracellular antioxidant barriers limiting chemodynamic therapy (CDT) by designing an Fe-Cu bimetallic organic framework (MOF) nanocarrier. Synthesized solvothermally, the spindle-shaped MOF (long axis: 3.5 μm; short axis: 2 μm) exhibits a high specific surface area (381.96 m 2 /g) and mesopores (6.69 nm diameter), as verified by SEM/XRD/FT-IR/BET/XPS. The coexisting Fe 3+ /Fe 2+ and Cu 2+ sites enable synergistic catalysis, achieving 68.2 ± 2.1% doxorubicin (DOX) loading with pH-responsive release in tumor-mimetic acidosis (pH 5.4; 78% cumulative release at 72 h, 7.8× higher than neutral pH). In vitro studies confirm dual functions: efficient glutathione depletion (60% absorbance reduction at pH 6.2, 300 μg/mL MOF) and enhanced hydroxyl radical generation via Fenton/Fenton-like reactions (40× TMB absorbance increase). Cell assays demonstrate low cytotoxicity to normal 293T cells within 48 hours (>80% viability at 25 μg/mL) versus potent synergistic efficacy against HeLa cells under simulated tumor microenvironment (100 μM H 2 O 2 ), where chemo-CDT reduces viability to 35% (31.4-37.5% improvement over monotherapies). This work establishes a self-driven platform for tumor-targeted synergistic therapy.
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ACS Applied Materials & Interfaces
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2026
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IF 8.2
Yongting Li,Chenyang Shen,Bowen Chen,Chenjia Liang,Yiming Bi,Congyan Jiang,Qiaolun Liu,Yongzheng Wang,Weiping Ding,Xuefeng Guo
Traditional Fischer–Tropsch synthesis (FTS) on iron-based catalysts is limited by the Anderson–Schulz–Flory (ASF) distribution, with a maximum theoretical selectivity of 58% for the C2–C4 hydrocarbons, accompanied by substantial methane byproduct formation. Suppressing methane formation while enhancing light olefin selectivity is of great significance, however, it remains a major challenge in this field. Herein, we developed a series of Fe/Cux@Al2O3 surrounded catalysts, which in situ formed a unique ε-Fe2C/Cu interfacial structure during the FTS. The optimized Fe/Cu3.8@Al2O3 catalyst achieved 84.7% selectivity toward C2–C4 hydrocarbons, significantly exceeding the ASF distribution limit, with a low CH4 selectivity of 8.9% and an unprecedented light olefin selectivity of 62.3%. Further investigation and theoretical calculations revealed that in the FTS reaction, CO and H2 adsorbed and dissociated on the ε-Fe2C surface, leading to the formation of CHx and CnHm intermediates through hydrogenation and chain-growth processes. Meanwhile, H* dissociated on the Cu surface migrated to the adjacent ε-Fe2C sites via hydrogen spillover. The appropriate supply of H* regulated the hydrogenation and desorption of CHx and CnHm species, simultaneously suppressing CH4 formation and limiting long-chain hydrocarbons (C5+) production. This work provides valuable insights and strategies for designing advanced FTS catalysts for the highly selective production of light olefins from syngas.
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Nano-Micro Letters
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2026
·Vol. 18
·期 1
·131
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IF 36.3
Fang Wei,Ou Zeping,Wang Yifan,Li Zhe,Huang Qian,Zhang Pengchi,Li Xinzhe,Zheng Yujie,Hu Lijun,Li Chen,Ouyang Jianyong,Sun Kuan
A novel Cu + /Cu 2+ redox couple was introduced to enable a thermosensitive crystallization process, significantly enhancing thermopower from 1.47 to 2.93 mV K ‒1 .
A readily fabricated etched carbon cloth electrode offered an enlarged electroactive surface area, demonstrating superior current density through improved kinetics.
The optimized Cu + /Cu 2+ system, achieved through synergistic enhancements in thermodynamic and kinetic performance, delivered an outstanding normalized power density P max ( ΔT ) ‒2 of 3.97 mW m ‒2 K ‒2 .
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Zhen Li,Chuanheng Dong,Xiaona Liu,Yuyuan Zhang,Menghan Zhang,Zihan Zhang,Yalin Zhang,Meiyu Zhang,Fenfen Ma,Xianqiang Huang
The electrocatalytic hydrogenation (ECH) of biomass-derived furfural (FF) offers a sustainable route to furfuryl alcohol (FA). However, achieving high FA selectivity in near-neutral reaction systems remains a formidable challenge. Herein, we explore an effective electrostatic assembly strategy to regulate the surface properties and electronic conductivity of the electrocatalyst: Strandberg-type polyoxomolybdate ([Mo 5 P 2 O 23 ]·[Cu(phen)(H 2 O)] 3 ·5 H 2 O, abbreviated as Cu 3 P 2 Mo 5 , which act as electron sponges are anchored onto two-dimensional transition metal carbides (MXenes, specifically Ti 3 C 2 T x ). This unique architecture significantly facilitates electron transfer between the substrate and the catalyst. Under near-neutral aerobic conditions, Cu 3 P 2 Mo 5 @MXenes exhibits exceptional catalytic performance in the electroreduction of FF, achieving full conversion to FA within 6 h. Notably, the dispersed copper atoms display remarkable catalytic activity for FF reduction, delivering a FA yield exceeding 99% with a turnover frequency (TOF) of 559 h −1 . Furthermore, this system achieved enhanced conversion efficiency with a reduced quantity of active centers, highlighting its superior atomic utilization. Based on the results of experimental (control experiments, kinetic isotope effect studies, electrochemical analyses, spectroscopic characterization) and theoretical (DFT calculations) analyses, we systematically elucidate the electronic synergy between Cu-modified Cu 3 P 2 Mo 5 and MXenes. Modulated electronic interactions optimize adsorption of key carbon radical intermediates, thereby boosting FF electrocatalytic hydrogenation efficiency. This study offers critical insights into the rational design of high-performance POMs-based electrocatalysts, advancing their application in efficient biomass conversion.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Tong Zeng,Hui Cheng,Jingmei Zhang,Shuai Xiong,Enxin Dong,Dongchao He,XiangMin Zhao,Qin Guo
The development of highly efficient catalysts for hydrogen production via water electrolysis is crucial for advancing hydrogen energy applications. This study successfully synthesized a Cu-W 2 C heterostructure supported on carbon nanofibers (Cu-W 2 C /CNFs) using a combined solid-phase hot-pressing and pyrolysis strategy. The prepared Cu-W 2 C/CNFs catalyst exhibits outstanding hydrogen evolution reaction performance, achieving a current density of 10 mA cm −2 in alkaline pure water and simulated seawater with overpotentials of only 89 and 102 mV, respectively. The catalyst maintains good stability after 100 h of continuous operation. Density functional theory (DFT) calculations reveal that the Cu-W 2 C heterostructure effectively optimizes the Gibbs free energy of hydrogen adsorption. Strong synergistic interactions at the heterointerface induce significant interfacial charge redistribution, thereby enhancing HER catalytic activity. This study provides guidance for synthesizing non-precious metal/carbon electrocatalysts via solid-phase hot-pressing technology.
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Hushan Zhang,Xiaoman Li,Liying Wang,Xiaoying Hai,Min Luo
Electrocatalytic nitrite reduction offers a sustainable route to convert hazardous water pollutants into valuable ammonia, yet its efficiency is often stifled by the competitive hydrogen evolution reaction (HER) and sluggish kinetics. Herein, we report the rational design of a quinary alloy catalyst, Co25Cu15@NiMnMg, featuring a distorted face-centered cubic (FCC) structure for highly efficient NO2RR. By precisely tailoring the metal ratios via a sol–gel method, the electronic structure and active site distribution were optimized to break the linear scaling relations. In an alkaline electrolyte, the catalyst delivers an outstanding ammonia yield of 3528.04 μg h–1 cm–2 with a Faradaic efficiency of 96.8% at −0.5 V vs RHE, significantly outperforming most binary benchmarks. Mechanistically, in situ Fourier transform infrared spectroscopy (FTIR) and electrochemical X-ray photoelectron spectroscopy (XPS) reveal a distinct site-specific synergy: Co sites act as the primary centers for NO2– capture and hydrogenation, while Cu moieties regulate the local hydrogen environment to suppress the HER. Additionally, the Ni–Mn–Mg matrix serves as a structural scaffold to enhance conductivity and stability. This work presents a compelling “multielement synergy” strategy for developing advanced electrocatalysts, offering a dual solution for environmental remediation and green energy carrier synthesis.
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ACS Applied Nano Materials
·
2026
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IF 5.8
Ze-Xian Chen,Yuan Zou,Ruo-Zhou Li,Yuan-Jun Song,Zong-Ru Yang,Lei Shi,Tong Zhang
The surging power density and thermal demands of advanced electronic devices necessitate conductive pastes that can undergo pressureless sintering at low temperatures while maintaining reliable performance under high-temperature operating conditions─requirements that conventional Sn-based solders can no longer meet. Cu@Ag core–shell nanoparticles offer a compelling alternative by integrating the cost-effectiveness and low electrochemical migration of Cu with the oxidation resistance of Ag. However, thermal dewetting of the Ag shell during heating significantly compromises the joint integrity and reliability. Here, we report a surface modification strategy that effectively suppresses the surface energy of Cu@Ag nanoparticles, enabling exceptional structural stability up to 250 °C without Ag shell dewetting. By incorporating surface-modified Ag nanoparticles, we formulate a bimodal conductive paste that achieves pressureless sintering at low temperatures and delivers a maximum shear strength of 20.18 MPa, which is on par with or even better than the shear strength of Cu@Ag nanoparticles sintered under a protective gas atmosphere in similar recent work. After 96 h of thermal aging, the shear strength further increased to 30.13 MPa. We performed fracture surface analysis on joints with different shear strengths and proposed a mechanism for the shear resistance of Cu@Ag paste joints at varying sintering levels. This work offers a practical and scalable approach for developing high-performance, low-cost conductive pastes and paves the way for the broader adoption of Cu@Ag-based pastes and adhesives in advanced electronic packaging.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Fan Yang,Feng Wang,Mengyu Zhai,Qijun Zhang,Fulai Liu,Yufeng Wu,Yong Chen
Integrated green electrochemistry upcycles waste PET and reduces nitrate to NH 3 , coupled to produce AF. • Upcycling of waste PET to formic acid (FE 97%). • Nitrate is reduced to ammonia with a FE of 98%. • CO 2 -eq is reduced by 99.81% per ton AF vs conventional for GWP (100y, excl. biogenic carbon). • TEA shows PET upcycling with nitrate reduction to co‑produce AF yields $556.5/ton net profit. Ammonium formate (AF) is a key chemical and fundamental building block in fields such as electrolysis, capacitor industry, organic synthesis. Conventional AF production relies on fossil-fuel-derived formic acid (FA) and ammonia (NH 3 ) obtained from the energy-intensive Haber-Bosch process. This work presents a sustainable electrocatalytic route for the direct synthesis of AF via a cathode-anode synergistic electrolysis, using nitrate (NO 3 - ) wastewater and polyethylene terephthalate (PET) waste as nitrogen and carbon sources, respectively. Employing a Cu-doped CoP (Cu-CoP) bifunctional catalyst, the system simultaneously achieves cathodic NO 3 - reduction to NH 3 with a Faraday efficiency (FE) of ∼ 98%, and anodic oxidation of PET-derived ethylene glycol (EG) to FA with an FE of ∼ 97%. The resulting anode and cathode products are subsequently mixed to form AF. Mechanistic studies reveal that Cu doping induces charge redistribution and upshifts the d -band center, thereby promoting reactant adsorption and activation while reducing the energy barriers for both NO 3 - reduction and EG oxidation. Life cycle assessment (LCA) and techno-economic analysis (TEA) confirm the environmental sustainability and economic profitability of the proposed process. This work establishes an efficient and durable catalytic route for PET upcycling and wastewater treatment, converting waste into value-added chemicals to advance a circular economy. Download: Download high-res image (207KB) Download: Download full-size image This work provides a novel approach for the sustainable synthesis of AF from PET waste and industrial nitrate-containing wastewater.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Chang Liu,Long Shang,Siwei Yan,Zilan Zhang,Nana Zhang,Wenzhuo Bian,Liyuan Tian,Kui Lin,Rui Zhang,Jing Yang,Cunku Dong,Pengfei Yin,Xiwen Du,Hui Liu
Green hydrogen production via water electrolysis requires efficient, low-cost catalysts for the hydrogen evolution reaction (HER) to reduce energy consumption and system costs. Copper nanoparticles offer a promising low-cost alternative because they combine high conductivity, abundant surface sites, and earth abundance. However, conventional synthetic methods either require large amounts of ligands, which compromises environmental sustainability, or lack precise control over nanoparticle size. Here, we develop a ligand-free spark ablation in liquid (SAL) strategy for the size-controlled synthesis of Cu nanoparticles. By elucidating the formation and growth mechanisms, we show that spark discharge produces Cu nanoparticles through two competing mechanisms: plasma-mediated mechanism and molten-droplet mechanism. The thermal state of the discharge system controls the dominant ablation pathway and therefore determines the final particle-size distribution. The smallest and most uniform Cu nanoparticles deliver excellent hydrogen evolution performance, exhibiting a lower overpotential than commercial Pt/C at current densities above 400 mA cm −2 and stable operation for over 50 h. Mechanistic analysis indicates that their superior activity arises from an altered rate-determining step during HER. These findings establish SAL as a clean and controllable platform for producing metal nanoparticle catalysts, and provide mechanistic guidance for designing high-performance Cu-based electrocatalysts.
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Yuanyuan Yang,Hang Yin,Hua-Jun Qiu,Chun-yang Zhang,Henglei Jia
The high-yield synthesis of uniform Cu/Ru nanostructures is crucial for catalyzing nitrate (NO3–) reduction to ammonia (NH3), yet it remains highly challenging. Herein, we report a facile strategy for synthesizing Cu/Ru bimetallic nanocages in high yield, driven by the Kirkendall effect. This process induces nonequilibrium atomic interdiffusion at the Cu/Ru interface, generating a net outward flux of Cu atoms and a counter-flux of vacancies, which collectively lead to the formation of a uniform nanocage structure. Importantly, the Cu87Ru13 nanocages exhibit superior performance in the electrochemical NO3– reduction reaction (NO3–RR), achieving a maximal Faradaic efficiency (FE) of 91% and an NH3 production rate of 3353 mmol h–1 g–1 at −0.3 V (vs reversible hydrogen electrode (RHE)). In situ characterization reveals that within Cu/Ru nanocages, Cu sites adsorb NO3– and reduce it to *NO2, while Ru sites reduce adsorbed *H, which protonates reaction intermediates to facilitate the conversion of NO3– to NH3.
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