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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INORGANIC CHEMISTRY
·
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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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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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 INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
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IF 6.76
Yachun Ren,Yueyang Xu,Erjian Huang,Peng Zhang,Yongping Zeng
Adsorption desulfurization is a very effective method to remove thiophenic compounds from fuels. The metal–organic frameworks (MOFs) have emerged as a new type of desulfurization adsorbents because of their porous nature and large specific surface area. In this study, Cu 2+ was covalently introduced into the UiO-66 framework at the defective sites by the solvothermal method. Further, the π-complexation adsorbent UiO-66-Cu(I) containing Cu + for adsorption desulfurization was synthesized by the methanol vapor-induced reduction. The adsorption performance was tested for the removal of thiophene from the model fuels with different sulfur concentrations. In comparison with the pristine UiO-66, the adsorbent UiO-66-Cu(I) has a higher adsorption capacity for thiophene, reaching 14.8 mg S/g. The competitive adsorption results indicated that UiO-66-Cu(I) has good selectivity for thiophene in the presence of aromatic compounds. From the recycling experiments, this adsorption still has the 86 % of the initial capacity after four cycles, indicating that the adsorbent has a good recycling performance.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 14
·40534-40550
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IF 5.8
Fang Lei,Wu Guojian,Yao Keyu,Zhang Dongyang,Zhou Yongchao
A novel heterogeneous catalyst named MoS 2 /MIL-53(Fe, Cu) (MMFC) was prepared by hydrothermal method and applied in a heterogeneous electro-Fenton (hetero-EF) system for lomefloxacin (LOM) degradation in this work. Under the optimal conditions of current density 3 mA/cm 2 , catalyst dosage 0.100 g/L, and initial pH 6, 93.5% LOM (2 mg/L) removal efficiency was achieved in the MMFC hetero-EF system within 60 min, indicating an obvious improvement compared with the MIL-53(Fe, Cu) hetero-EF system. The good catalytic activity was attributed to more effective active sites of the catalyst and the conversion of Fe(II)/Fe(III) and Cu(I)/Cu(II) promoted by Mo(IV) in MoS 2 , which could be inferred by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) characterizations. The reusability and stability of MMFC were explored based on five cyclic experiments, and the average degradation efficiency reached 73.9%. Furthermore, the hetero-EF system could achieve the total removal of moxifloxacin and tetracycline within 6 min and 40 min, respectively. Quenching experiments revealed that the hydroxyl radicals (·OH) were the main reactive radicals while superoxide radicals (·O 2 − ) and singlet oxygen ( 1 O 2 ) played a certain part in LOM degradation. Finally, the possible mechanism of the hetero-EF process and LOM degradation pathways were proposed, including substitution, elimination, and cleavage of ring structures. Accounting for good catalytic performance, low preparation cost, and satisfactory versatility, the MMFC exhibited good potential to work as a hetero-EF catalyst for wastewater treatment.
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BIORESOURCE TECHNOLOGY
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2023
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IF 11.4
Qiaozhi Zhang,Yuqing Sun,Weijian Xu,Yang Cao,Chunfei Wu,Chi-Hwa Wang,Daniel C.W. Tsang
Microwave (MW)-assisted catalytic degradation of organic pollutants draws increasing attention owing to its high efficiency in wastewater treatment. This work developed Cu-loaded biochar (CuBC) catalysts for time-efficient mineralization of refractory and high-concentration oxytetracycline (OTC). With only 1 min at 80 °C, Na 2 S 2 O 8 achieved 100% total organic carbon (TOC) removal over the Cu5BC, while NaClO mineralized 73.3% TOC over the metal-free BC, in contrast to a relatively low mineralization efficiency (< 35%) achieved by H 2 O 2 . The high efficiency in MW-assisted oxidation systems could be ascribed to reactive oxidizing species ( • SO 4 − or • ClO), which otherwise were barely detectable in a conventional heating system. The interactions between CuBC and MW were revealed by correlating the physiochemical characteristics to the MW absorption ability. The proposed catalytic systems can contribute to the development of a high-throughput and low-carbon wastewater treatment technology.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
·
IF 24.319
Guiming Xie,Rongrong Jin,Pengju Ren,Yunming Fang,Runduo Zhang,Zhou-jun Wang
Boosted CO 2 hydrogenation to methanol was achieved by introducing appropriate amount of Au into conventional Cu-based catalysts. The Au x Cu/ZnO bimetallic catalysts with various Au/Cu molar ratio (x = 0.001, 0.005, 0.02 and 0.05) were prepared by the co-precipitation method, among which the Au 0.005 Cu/ZnO catalyst exhibited the highest methanol production rate. The formation of Au-Cu alloy was identified on the Au x Cu/ZnO bimetallic catalysts. Experimental characterizations and density functional theory (DFT) calculations suggested metal-oxide interfaces with oxygen vacancies as intrinsic active sties for both un-promoted and Au-promoted Cu/ZnO catalysts. The promotion effect of Au in bimetallic catalysts was correlated with the increase of active sites, facilitation of CO 2 activation and modification of intermediate adsorption. The present work for the first time develops a promising Au 0.005 Cu/ZnO bimetallic catalyst with trace amount of Au (only 0.4 wt%) and provides insight into the reaction mechanism over Au-promoted Cu/ZnO catalysts for methanol synthesis via CO 2 hydrogenation.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Xin Fang,Ling Tan,Haopeng Luo,Fang Jiang,Huan Chen
Designing electrocatalysts for nitrate (NO 3 - ) reduction with excellent activity, low cost and stability is of great interest. Herein we synthesized a novel transition bimetallic phosphide (CuFeP-x, x referred to the phosphidation temperature) catalyst by phosphidation using CuFe-Prussian blue analogue (PBA) nanoparticles as the precursor. The obtained CuFeP-450 maintained the morphology of nanocube with the average size of 33.0 nm and bimetallic phosphide nanoparticles formed during the phosphidation process. The higher electrocatalytic activity of CuFeP-x in electrochemical NO 3 - reduction were attained as compared to that of calcined CuFe-450, because the CuFeP-x have a lower interface impedance and the dominated species for NO 3 - reduction changes from electron to atomic H* , which effectively enhanced the removal rate. The appropriate phosphidation temperature can form a crystal structure that facilitated reaction kinetics. As a result, CuFeP-450 showed the best electrocatalytic performance for NO 3 - reduction (99.42%), and the selectivity of N 2 can reach nearly 100% under the condition of 1000 mg L −1 chloride ions . This simple method using PBA with binary transition metals to prepare bimetallic phosphide provides a new direction for designing efficient non-noble metal electrocatalysts for NO 3 - reduction.
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