首页期刊导航|稀有金属（英文版）
期刊信息/Journal information
稀有金属（英文版）
稀有金属（英文版）

屠海令

双月刊

1001-0521

rmchina@263.net

010-82240869

100083

学院路30号

稀有金属（英文版）/Journal Rare MetalsCSCDCSTPCD北大核心EISCI
查看更多>>本刊以稀有金属材料研究、开发和冶炼为特色，主要报道稀有金属和部分有色金属在材料研制、合金加工、选矿、冶炼、理化分析测试等方面的最新研究成果，同时报道超导材料、半导体材料、复合材料、陶瓷材料、贮氢材料、磁性材料和纳米材料的研制与性能。
正式出版
收录年代

    Synergistic rare-earth yttrium single atoms and copper phosphide nanoparticles for high-selectivity ammonia electrosynthesis

    Yi-Meng CaiYang-Hua LiYi XiaoQuentin Meyer...
    5792-5801页
    查看更多>>摘要：Electrochemical nitrate reduction to NH3 holds a great promise for N-upcycling in nature,while its slug-gish reaction kinetics involved in both the stepwise deoxygenation and hydrogenation processes necessitates the development of bespoke catalysts with multi-site engineering.Herein,we report a hybrid catalyst composed of rare-earth(RE)yttrium(Y)single atoms and copper phosphide(Cu3P)nanoparticles loaded on N,P-doped carbon(YSA-Cu3P/CNP)through a chelating and pyrolysis method.Owing to a synergistic contribution of Y single atoms and Cu3P nanoparticles,YSA-Cu3P/CNP achieves an impressive NH3 Faradaic efficiency(FE)of 92％at-0.5 V(vs.RHE)and the highest NH3 yield rate of 11.4 mg·h-1·cm-2 at-0.6 V(vs.RHE)in an alkaline media,which surpass most of the reported electrocatalysts.The intricate reaction pathway has been explored by online differential electrochemical mass spectrometry(DEMS),and the synergistic effect between Y single atoms and Cu3P nanoparticles has been studied by in situ synchrotron X-ray absorption spectroscopy.Moreover,density-functional theory(DFT)calculations unveil that the high-efficiency nitrate reduction on YSA-Cu3P/CNP is attributed to a reduced energy barrier of the rate-determining deoxy-genation step coupled with the enhanced stabilization of active hydrogen favorable for the hydrogenation steps,thereby boosting the overall reaction rates.In addition,a prototype Zn-nitrate battery utilizing YSA-Cu3P/CNP as the cathode is unveiled.This work not only elucidates the mechanism behind the enhanced catalytic performance but also paves the way for the future development of high-efficiency electrocatalysts through dual-site engineering.
      原文链接:
    • 万方数据
    • 维普

    Post-modification engineering of cerium metal-organic frameworks for efficient visible light-driven water oxidation

    Lin-Zhu ZhangLu ChenGui-Yang YanRuo-Wen Liang...
    5802-5812页
    查看更多>>摘要：Metal-organic frameworks(MOFs)are highly desirable for promising photocatalytic water splitting,but their practical application is greatly limited due to their unstable chemical properties and insufficient visible light response as well as low charge-carries utilization,espe-cially in photocatalytic O2 production.Herein,we present a post-modification engineering to modulate cerium metal-organic frameworks(Ce-MOFs)for realizing efficient photocatalytic water oxidation to liberate O2 by visible light.The one-step partial oxidation strategy is adopted to modify pristine Ce-MOFs,yielding the new Ce-MOFs(MV-Ce-MOFs)with mixed valence of Ce3+/Ce4+.Creating the Ce nodes of a mixed valence state can effectively extend the optical absorption to the visible region,expose more catalytically active sites and inhibit the recombination of photoinduced charges.Consequently,the MV-Ce-MOFs exhibit high activity for photocatalytic O2 evolution under visible light,manifesting an impressive 1.6％apparent quantum efficiency(AQY)under monochromatic irradiation of 405 nm.The regulation engineering of MOF metal node valence heralds a new paradigm for designing MOF-based photocatalysts.
      原文链接:
    • 万方数据
    • 维普

    Machine-learning-aided Au-based single-atom alloy catalysts discovery for electrochemical NO reduction reaction to NH3

    Hui-Long JinQian-Nan LiYun-Yan TianShuo-Ao Wang...
    5813-5822页
    查看更多>>摘要：Direct electrochemical conversion of NO to NH3 has attracted widespread interest as a green and sustainable strategy for both ammonia synthesis and nitric oxide removal.However,designing efficient catalysts remains challenging due to the complex reaction mechanism and competing side reactions.Single-atom alloy(SAA)cata-lysts,which increase the atomic efficiency and the chance to tailor the electronic properties of the active center,have become a frontier in this field.Here,we performed a sys-tematic screening of transition metal-doped Au SAAs(de-noted as TM/Au,TM=Sc,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Ru,Rh,Pd,Ag and Pt)to find potential catalysts for elec-trochemical NO reduction reaction(NORR)to NH3.By employing a four-step screening strategy based on density functional theory(DFT)calculations,Zn/Au SAA has been identified as a promising NORR catalyst due to its superior structural stability,reaction activity and NH3 selectivity.The electron-involved steps on Zn/Au are thermodynamically spontaneous,which results in a positive limiting potential(UL)of 0.15 V.The preferred NO affinity compared to H adatom demonstrates that Zn/Au can effectively suppress the hydrogen evolution reaction.Machine-learning(ML)investigations were adopted to address the uncertainty between the physicochemical properties of SAAs and the NORR performance.We applied an extreme gradient boosting regression(XGBR)algorithm to predict the limit-ing potentials in terms of the intrinsic features of the reaction site.The coefficient of determination(R2)is 0.97 for the training set and 0.96 for the test set.The electronic structure analysis combined with a compressed-sensing data-analytics approach further quantitatively verifies the coeffect of d-band center,charge transfer and the radius of doped TM atoms,i.e.,features with the highest level of importance determined by the XGBR algorithm.This work provides a theoretical understanding of the complex NORR to NH3 mechanisms and sheds light on the rational design of SAA catalysts by combining DFT and ML investigations.
      原文链接:
    • 万方数据

    An universal in-situ phosphating strategy to fabricate high-performance Co2P-based bifunctional oxygen electrocatalyst derived from conjugated polyaniline-phytic acid copolymer

    Wen-Xue ChenYue DuLi-Na ZhouZhi-Yi Zhong...
    5823-5834页
    查看更多>>摘要：Electrocatalysts play a crucial role in the per-formance of rechargeable Zn-air batteries(ZABs),but it is still difficult to produce nonprecious materials with excel-lent bifunctional oxygen reduction reactions(ORR)and oxygen evolution reactions(OER).Herein,conjugated polyaniline-phytic acid polymer(pANI-PA)was directly calcined to fabricate Co2P nanoparticles embedded in N,P-doped carbon network composites(Co2P@pDC-PA)for metal-air cathodes.The resulting pANI-PA derived Co2P-based carbon composite exhibits exceptional bifunctional ORR/OER activities with a half-wave potential of 0.79 V for ORR and 1.62 V of over-potential for OER at 10 mA·cm-2.Owing to the synergistic effect of its unique three-dimensional(3D)structure,N,P-doped carbon framework,and encapsulated Co2P nanoparticles,as-fab-ricated composite can be used as a highly efficient air cathode in the rechargeable metal-air battery.The assem-bled rechargeable ZAB demonstrates a high-power density of 190.0 mW·cm-2 and remarkable cycling stability over 1000 h.This study introduced a novel approach that paves the way for the efficient,cost-effective,and scalable pro-duction of bifunctional electrocatalysts for rechargeable ZABs.
      原文链接:
    • 万方数据

    Synergy of metal-support interaction and positive Pd species promoting efficient C-Cl bond activation on Pd-based Ce-MOF-derived catalysts

    Xiao-Jie HuYu-Han SunLing-Yue LiuDan-Jun Mao...
    5835-5847页
    查看更多>>摘要：Monochloroacetic acid(MCAA)is identified as a highly carcinogenic disinfection by-product in chlori-nated drinking water.In this study,a series of CeO2-sup-ported Pd catalysts(Pd/MCeO2)were synthesized through one-step calcination of Pd-loaded Ce-UiO-66-BDC(Ce-MOF),and the liquid-phase catalytic hydrodechlorination of MCAA was explored using these catalysts.For com-parison,Pd/CeO2 catalysts were additionally synthesized using the conventional impregnation method.The charac-terization results reveal that the catalysts exhibit strong metal-support interaction,leading to high Pd dispersion and Pdn+content.Additionally,the calcination temperature significantly influences catalytic performance,with the catalyst calcined at 500 ℃(Pd/MCeO2-500)demonstrat-ing the highest catalytic activity and achieving complete dechlorination of MCAA within 50 min.Furthermore,it is found that the catalytic MCAA hydrodechlorination using the catalysts adheres to the Langmuir-Hinshelwood model.Accordingly,low reaction pH is favorable for the catalytic hydrodechlorination of MCAA,enhancing MCAA adsorption on the catalyst surface due to the electrostatic interaction between MCAA and the catalyst surface.The-oretical results suggest that the presence of Pdn+efficiently facilitates MCAA adsorption and C-Cl cleavage,thus significantly enhancing the liquid-phase catalytic hydrodechlorination.
      原文链接:
    • 万方数据

    Boosting alkaline hydrogen evolution via spontaneous built-in electric field

    Ze-Peng LvDa-He ZhangMeng-Lu ZangShao-Long Li...
    5848-5859页
    查看更多>>摘要：The electrochemical reaction rate strongly depends on the pH of the solution and the relatively slug-gish alkaline hydrogen evolution reaction(HER)process,attributed to alterations in the type of proton donor and binding energy,has consistently presented a significant challenge.Here,we report a new method for boosting alkaline HER via spontaneous built-in electric field strat-egy employed on cobalt phosphide nanofibers(NFs)elec-trocatalyst.The anion-cation dual-introduction of V and N on the NFs not only increases the electrochemical surface area but also enhances the catalytic activity,thereby ele-vating the performance of alkaline HER.An investigation strategy combining experiments and calculations revealed the charge transfer law between multiple active compo-nents and the enhanced regulation mechanism of alkaline HER process,ultimately achieving a nearly twice increase in reaction overpotential of the as-fabricated catalyst at-10 mA·cm-2.This new approach provides a potential strategy for improving the efficiency of core catalyst for energy conversion technologies.
      原文链接:
    • 万方数据
    • 维普

    Two-dimensional metallic CoTe2 flakes for electrocatalytic hydrogen evolution

    Yu-Qing ZhaoQian LiuBo-Jian ZhouGuang Yang...
    5860-5867页
    查看更多>>摘要：Two-dimensional(2D)metallic 1T-CoTe2 has attracted considerable attention due to its fascinating physical properties and promising applications in elec-tronics and catalysis.However,the production of high-quality 2D 1T-CoTe2 still remains challenging.Herein,we demonstrate a methodology to realize the facile synthesis of ultrathin,high-quality CoTe2 flakes with a thickness down to 2.3 nm on mica substrates by an ambient-pressure chemical vapor deposition(CVD)technique.The atomic arrangement is verified by scanning transmission electron microscopy.The theoretical calculations uncover the metallic characteristic of 1T-CoTe2 in the 2D limit.Remarkably,the CVD-derived 2D metallic CoTe2 flakes for the hydrogen evolution reaction(HER)catalyst exhibit admirable performance,such as an overpotential of 186 mV at 10 mA.cm-2,aTafel slope of 78 mV·dec-1,an exchange current density of 69 μA.cm-2,and negligible performance degradation after 1000 cycles.These results establish novel approaches for the synthesis and HER application of 2D metallic 1T-CoTe2.
      原文链接:
    • 万方数据

    NiCoFeCu medium-entropy alloy nanoparticles encapsulated in carbon nanotubes as catalysts for enhancing the hydrogen desorption of MgH2

    Ya-Fei LiuYi-Ke HuangYu-Sang GuoMeng-Yuan Yue...
    5868-5879页
    查看更多>>摘要：Recently,high/medium-entropy alloys(HEAs/MEAs)have been considered attractive catalysts due to their unique physicochemical properties.However,the synthesis of nano-sized HEAs/MEAs catalysts with desir-able morphology presents significant challenges.Herein,we report the synthesis of NiCoFeCu MEA nanoparticles encapsulated in nitrogen-doped carbon nanotubes(NCTs)via a straightforward one-step pyrolysis method.The unique structure of NiCoFeCu/NCTs and the nano-sized MEA catalysts contributes to the improved hydrogen des-orption kinetics of MgH2.The onset dehydrogenation temperature of the MgH2-NiCoFeCu/NCTs composite decreased to 173.4 ℃,a reduction of 117.4 ℃ compared to pure MgH2.The MgH2-NiCoFeCu/NCTs composite could release 6.50 wt％H2 within 30 min at 325 ℃.Fur-thermore,an activation energy of 116.3 kJ·mol-1 for the MgH2-NiCoFeCu/NCTs composite has been obtained,much lower than pure milled MgH2,demonstrating an enhanced hydrogen desorption kinetics.Moreover,the exceptional dispersion capability of the carbon material contributes to outstanding cyclic stability without any loss of capacity even after 10 cycles of de/hydrogenation at 300 ℃.
      原文链接:
    • 万方数据

    Graphitic carbon nitride/La,Rh co-doped SrTiO3 S-scheme heterojunction for photocatalytic CO2 reduction

    Si-Jie WanYan-Ting HouWang WangGuo-Qiang Luo...
    5880-5890页
    查看更多>>摘要：Photocatalytic reduction of CO2 has attracted considerable interest owing to its potential to resolve the energy and environmental problems.Nevertheless,the lack of proficient photocatalysts has restricted the application of solar-driven photocatalytic CO2 reduction.Herein,we reported an S-scheme heterojunction by combining g-C3N4 with La3+and Rh3+co-doped SrTiO3 through the elec-trostatic self-assembly method for the efficient photocat-alytic CO2 reduction.In comparison with g-C3N4,the as-prepared CN/LRSTO-30 wt％S-scheme heterojunction not only possesses a broadened visible-light response due to the defect states in La,Rh co-doped SrTiO3 induced by co-doped La3+and Rh3+but also has more adsorption sites for the capture and activation of CO2 molecules.Additionally,separation and transfer efficiency of the photoinduced charge carriers is much enhanced in the CN/LRSTO-30 wt％S-scheme heterojunction via its robust internal elec-tric field,which is firmly demonstrated by in situ irradia-tion X-ray photoelectron spectroscopy technology.Consequently,the prepared S-scheme heterojunction achieves impressive photocatalytic CO2 reduction perfor-mance with an average CO and CH4 evolution rate of 4.1-1.8 μmol·g-1·h-1,respectively,which are～1.9 and～22.5-fold higher than those of pure g-C3N4.This study provides innovative perspectives on the design of creative S-scheme heterojunctions for applications in photocatalytic CO2 reduction.
      原文链接:
    • 万方数据

    Synergistic Cu single-atoms and clusters on tubular carbon nitride for efficient photocatalytic performances

    Yu-Xiao FengHui-Jun YuTian-Guang LuZi-Ye Zheng...
    5891-5904页
    查看更多>>摘要：Metal clusters or even single-atoms dispersed and anchored on the photocatalysts'surface can enhance photocatalytic performances on organic pollutant oxida-tion.Here,a simple photoreduction method was used to create atomically dispersed metal single-atoms/clusters(MSCs,M=Cu,Pd,Au and Ag)on P-modulated tubular carbon nitride(TCN).The obtained MSCs@TCN demon-strated excellent photocatalytic performances for the degradation of sulfamethazine(SMZ).In particular,the photocatalyst with 2 wt％Cu loading showed ultrahigh SMZ oxidation efficiency(k=0.06110 min-1),almost three times that of TCN(k=0.02066 min-1).It also shows excellent stability in the 5th-cycle measurements.The improved photocatalytic activity of the CuSCs@TCN is ascribed to the synergistic promotion of photogenerated charge separation by Cu single-atoms/clusters as active sites,accelerated charge transfer from bulk TCN to Cu sites through Cu-Nx interaction.Meanwhile,the active sites of Cu single-atoms/clusters could promote the pro-duction of O2-,which participates in organic oxidation with strong oxidizing holes(h+).This strategy paves a new avenue for designing high-performance photocatalysts decorated with metal single-atoms and clusters.
      原文链接:
    • 万方数据
    • 维普