JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jingqiu Li,Yuming Xie,Mengjue Cao,Yi Feng,Jianfeng Yao
The metal ion etching induced transformation of zeolitic imidazolate frameworks (ZIFs) to layered double hydroxides (LDHs) is closely related to the etching conditions. Here, by tuning the Ni 2+ etching conditions (e.g., initial Ni 2+ concentration and etching time), Co-ZIF-L templated CoNi-LDH with diverse morphologies and tailorable compositions are obtained and their resultant electrochemical properties are optimized. Mechanism study reveals that the etching conditions significantly affect the disassembling rate of Co-ZIF-L as well as the formation rate of CoNi-LDH, leading to the morphological and compositional variance of etched samples, which further results in their distinct electrochemical activities. The resultant asymmetric supercapacitor assembled with Co-ZIF-L derived CoNi-LDH and activated carbon can achieve a maximum energy density of 77.3 Wh/kg at a power density of 700 W/kg with the capacity retention of 85.7 % after 2000 cycles, superior or comparable to other advanced CoNi-LDH based supercapacitors .
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高影响因子
TALANTA
·
2025
·
IF 6.1
Chang Liu,Jiwei Dai,Jinzhao Wang,Chengming Hu,Mengxian Fu,Meifang Wang,Xiangsong Lin,Xiaomei Cheng,Xiangzi Li
Construction of magnetic nanotubes and transition metal ion generated by acid etching form its own surface (defined as “self-released” systems) can effectively address the issues of complex operation and poor adsorption performance associated with traditional immobilized metal affinity chromatography (IMAC) materials. Based on the magnetic Ni core and polydopamine (PDA) shell, a core-shell structured Ni@PDA magnetic composite nanotubes and thier acid-etched product (defined as Ni@PDA-T) were developed and synergistically provided excellent magnetic responsiveness, low cell toxixity and more active sites, enabling efficient magnetic separation and surface Ni 2+ self-release. Surface self-released Ni 2+ enabled coordinate capture of histidine-rich proteins without requiring exogenous metal ion supplementation after fixed onto PDA with pH 8.0, simplifying operation and enhancing adsorption efficiency. Given the differences in histidine content among Bovine hemoglobin (BHb), Bovine serum albumin (BSA), and Lysozyme (LYZ), Ni@PDA-T exhibited a maximum adsorption capacity of 4556 mg/g for BHb, which is rich in histidine residues. Density functional theory (DFT) calculations indicate that p-d orbital coordination interactions dominate the His protein's immobilization onto the Ni site and result in superior adsorption behavior for the His protein by DOPAm-Ni 2+ functional group. SDS-PAGE analysis of mixed protein systems and actual bovine blood samples further confirmed the selective adsorption of BHb by Ni@PDA-T. Chelator-free blood purification was achieved through synergistic coordination between self-released Ni 2+ and histidine residues, overcoming the reliance on traditional chelating agents.
研究领域:
材料科学
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纳米技术
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生物分离
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蛋白质纯化
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磁性复合材料
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高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Alimujiang Yalikun,Yanhong Wang,Yun Lv,Yaling Dou,Hyun-Joo Koo,Jiaojiao Cao,Wei Qi,Keke Huang,Myung-Hwan Whangbo,Zhongwen Ouyang,Hongcheng Lu
A series of analogous chain selenite chlorides Ba2M(SeO3)2Cl2 (M = Cu 1, Ni 2, Co 3, Mn 4) and Pb2Cu(SeO3)2Cl2 5 with tunable spin S from S = 1/2 to S = 5/2 have been hydrothermally synthesized and characterized. These analogues crystallized in the orthorhombic Pnnm space group (monoclinic P21/n space group for 5) all containing M2+–SeO3–M2+ spin chains, which are further separated by the Ba2+ ions (Pb2+ for 5). The magnetic susceptibility results of 1, 2, and 5 show broad maxima around 80.0, 18.9, and 78.0 K, respectively, indicating good one-dimensional (1D) magnetism. Meanwhile, no long-range order (LRO) is observed down to 2 K for both 1 and 5, while the isostructural compounds 2, 3, and 4 exhibit LRO at 3.4 K, 10.8 K, and 5.7 K, respectively, which are further confirmed by the heat capacity and electron spin resonance results, as well as the observed spin-flop transitions in the M–H curves measured at 2 K below TN. The magnetizations of 1–5 at 7 T are still far from saturation. In addition, thermal stability and FT-IR and UV–vis–NIR spectroscopy of 1–5 are reported.
研究领域:
无机化学
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材料科学
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固体物理
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磁学
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晶体学
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高影响因子
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2026
·
IF 10.5
Xingyu Li,Jian Peng,Zihao Xu,Wanyuan Li,Biao Xu,Chunyu Li,Wubin Dai
Simultaneous realizations of high thermal stability and quantum efficiency (QE) in phosphors with near-infrared (NIR) photoluminescence (PL) and long-persistent PL (LPL) attributes are a daunting task. Herein, we have come up with a dual-site co-substitution scheme in Ca 3 Sc 2 Ge 3 O 12 : Cr 3+ /Ni 2+ to concurrently actualize high-quality NIR-I/II (L)PL via either equivalent or aliovalent co-substitution at indirect lattice A/C sites of [Y 3+ + Al 3+ ] or [Y 3+ + Si 4+ ] for [Ca 2+ + Ge 4+ ]. Both Cr 3+ and Ni 2+ are colonized at B site (Sc 3+ ) under weak crystal field environment and emitting continuous PL across NIR-I/II regions via energy transfer from Cr 3+ to Ni 2+ under blue-light excitation. Due to inequivalent replacement of Ni 2+ at Sc 3+ site and consequential production of defects, a charming NIR LPL is also gained. Further incorporation of [Y 3+ + Al 3+ ] unit begets densified robust framework with [Sc(Cr/Ni)O 6 ] octahedral distortion, elucidating the mechanism of improved properties in PL QE (76.23%) and stability (89.5%@423 K). While [Y 3+ + Si 4+ ] modulation in Ca 3 Sc 2 Ge 3 O 12 not only brings rigid structure but also suppresses defects (LPL) because of equivalent triple-unit between Y 3+ /Si 4+ /Ni 2+ and Ca 2+ /Ge 4+ /Sc 3+ . A NIR pc-LED based on the designed phosphor with a commercial 460 nm blue LED chip is fabricated and reveals multi-applications in nondestructive detection, bioimaging, and anticounterfeiting. This work provides new perspectives for developing high-performance NIR-emitting phosphor materials. This study reveals the state-of-the-art researches on both NIR-I/II-emitting (L)PL phosphors with high QE and thermal stability from Cr/Ni-activated in garnet Ca 3 Sc 2 Ge 3 O 12 and their multiple applications in the NIR pc-LED, non-destructive detection, and anticounterfeiting. The proposed A/C-site regulation and ET from Cr to Ni pave a new way to design NIR-I/II phosphor and expands their related optoelectronic applications. Download: Download high-res image (298KB) Download: Download full-size image
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高影响因子
Small
·
2026
·
IF 11.8
Tianyu Jia,Mengnan Ruan,Chengyi Wang,Li Zhou,Zhifeng Liu
Efficient piezo-photoelectrochemical (Piezo-PEC) water splitting is critical for sustainable hydrogen production, yet its performance is largely constrained by sluggish charge separation and inefficient mechanical-to-electrical energy conversion. Here, we introduce a defect polarization-metal anchoring strategy by selectively anchoring Ni at Ba-vacancy-rich regions of BaTiO 3 to achieve efficient Piezo-PEC water splitting. Experimental characterizations and density functional theory (DFT) calculations reveal that Ba vacancies reconstruct the local coordination environment of Ti sites, promoting Ti 3+ formation and TiO 6 octahedral distortion to enhance lattice polarization and the piezoelectric built-in electric field. Ni anchoring further enhances Ti 3d-Ni 3d-O 2p orbital hybridization and Ti─O covalency, forming Ni 2+ /Ti 3+ dual active sites. The enhanced covalency establishes delocalized electron transport pathways to suppress bulk carrier recombination, while the dual active sites accelerate the proton-coupled electron transfer (PCET) via Ti─O─Ni bridges. The reinforced piezoelectric field synergistically couples with the photogenerated field to promote efficient charge separation. Benefiting from these cooperative effects, the Ni/BTO-Ba V photoanode delivers a photocurrent density of 2.21 mA cm −2 at 1.23 V RHE under ultrasonic-light coupling, with a piezoelectric coefficient (d 33 ) of 65.13 pm V −1 . This work establishes a universal guideline for synergistic modulation of defect polarization and metal sites, guiding the rational design of high-performance photoelectrodes.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yun Hu,Jingru Sun,Cuige Zhang,Chunmiao Xia,Liuyan Zhu,Maodong Xu,Rongli Zhang,Yinsheng Fang
Hollow carbon spheres (HCSs) have attracted broad attention in aqueous zinc-ion hybrid supercapacitors (ZIHSCs) owing to their distinctive properties. However, traditional methods for fabricating HCSs face limitations, including complex multistep procedures, the use of corrosive chemicals, and stringent reaction conditions. In this work, biomass-based poly(γ-glutamic acid)/Ni 2+ /melamine/chitosan nanoparticles were used as the precursors to fabricate N/O co-doped hollow graphite carbon spheres (HGCSs). Thanks to the appropriate hydrophilic characteristic, specific surface area, pore size distribution, and electrical conductivity, the fabricated HGCSs cathode exhibited superior electrochemical properties. The assembled HGCSs-based ZIHSCs device showed a satisfactory specific capacitance of 133.2 mAh·g −1 at a current density of 1.0 A·g −1 , high energy densities of 75.2 Wh·kg −1 at 10,000 W·kg −1 and 107.9 Wh·kg −1 at 1000 W·kg −1 , respectively. Additionally, the assembled HGCSs-based ZIHSCs device displayed an exceptional cycling stability, enduring up to 10,000 cycles at 0.5 A·g −1 with a capacity retention rate of 98.1 %. This work provides a facile and novel strategy to prepare superior electrochemical performance biomass-based HGCSs cathode for ZIHSCs.
研究领域:
材料科学
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能源存储
·
纳米技术
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 25
·11535-11544
·
IF 3.553
Zeng Tianbiao,Zhang Chuhong
An oxalate-based hydrothermal approach has been applied to synthesize Ni 0.8 Mn 0.1 Co 0.1 ·C 2 O 4 ·2H 2 O “mixed oxalate,” and “mixed oxalate” has been lithiated to LiNi 0.8 Mn 0.1 Co 0.1 O 2 for Li-ion batteries cathode. Ni 2+ , Mn 2+ and Co 2+ can be precipitated quickly and effectively at 100 °C within 20 min without inert gas protection, and it was not needed to control the pH of the solution deliberately. After the “mixed oxalate” was lithiated to LiNi 0.8 Mn 0.1 Co 0.1 O 2 , as-synthesized LiNi 0.8 Mn 0.1 Co 0.1 O 2 can deliver 160–180 mAh g −1 at 1C during long-term cycling and showed one of the best electrochemical performances compared to some Ni-rich or Ni/Mn/Co-contained cathodes synthesized by similar procedures, i.e., higher reversible capacity in rate charge/discharge cycles. Considering the facile synthesis of “mixed oxalate,” this work may give rise to an inspiration for LiNi x Mn y Co 1− x − y O 2 cathodes research.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Junwei Xin,Lei Wang,Xudong Wang,Rui Miao,Jin Wang,Han Sun,Jiajin Hao
Covalent organic frameworks (COFs) membranes have demonstrated exceptional adaptability and promising potential for precision ion-selective separation in aqueous solutions due to the fact that their pore size and charge intensity can be tailored through coordinated structural modulation. Chelation-assisted membrane separation technologies represent a highly effective strategy for separating and recovering similar divalent transition-metal ions (e.g., Ni 2+ , Co 2+ , and Mn 2+ ). In this approach, conventional chelating agents, such as ethylenediaminetetraacetic acid (EDTA), selectively bind to specific divalent metal (M 2+ ) ionic species in aqueous mixtures, forming negatively charged M–(EDTA) 2− complexes. By regulating the COFs membranes with appropriate pore size and intrapore charge density, the significant physicochemical differences between the M 2+ ions and the M–(EDTA) 2– complexes formed through the selective chelation can be leveraged to achieve their efficient separation. This enables the effective separation of Ni 2+ , Co 2+ , and Mn 2+ ions via membrane-based techniques. In this study, a two-step solvothermal–casting approach was employed to synthesize highly crystalline COF membranes with tunable content of the intrapore sulfonic acid (–SO 3 H) group. By modulating the –SO 3 H group content, the issue associated with the inherent trade-off between the M 2+ permeation flux and the M–(EDTA) 2− complex ion rejection efficiency could be overcome, and an optimal membrane separation performance was obtained. The synthesized membranes can selectively separate Ni 2+ , Co 2+ , and Mn 2+ in both binary and ternary systems through an EDTA-chelation-assisted dialysis process, which is remarkably stable under operational conditions. Furthermore, the membranes demonstrate superior M 2+ permeability compared with commercial cation-exchange membranes in EDTA-chelation-assisted electrodialysis. These findings provide valuable insights into the design of membrane structures for the effective separation and recovery of similar divalent transition metal ions (e.g., Ni 2+ , Co 2+ , and Mn 2+ ) in aqueous solutions.
研究领域:
材料科学
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环境工程
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Peng Wu,Yuanyuan Ma,Hongyu Wang,Jianghong Wu,Sheng Fan,Yu Zheng,Yongfeng Li,Lifeng Ding
The electrochemical oscillation (EO) exhibited by Cu anodes during dissolution in H 3 PO 4 /Cl - mixed electrolytes significantly influence the efficacy of processes such as metal surface treatment, precision electroplating, and electrochemical mechanical polishing(ECMP). While Cl - ions have been identified as the key factor inducing oscillations, the mechanism governing their interaction with coexisting cations remains unclear. This study, integrating electrochemical analysis, anodic film surface characterisation, and density functional theory (DFT) calculations, reveals the decisive regulatory role of cations in oscillation mechanisms and corrosion film properties. The findings indicate that, when the influence of Cl - ion concentration is excluded, Na + ions primarily fulfil charge-balancing functions, while Ni 2+ and Al 3+ ions exert synergistic regulatory effects at the active interface. Ni 2+ ions form pure CuCl films through strong adsorption, prolonging oscillation periods. Conversely, Al 3+ ions promote the formation of CuCl/Cu(II)/AlO 4 /Al(OH) x composite films, accelerating film dissolution and shortening periods. The specificity of cations directly determines the stability and dissolution kinetics of films on the Cu anode surface. This study establishes the role of cations as key variables in the electrolytic process, providing a theoretical foundation for understanding EOs and passivation mechanisms.
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高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Shihai Miao,Yanjie Liang,Ruiqi Shi,Weili Wang,Yongfu Li,Xiao-Jun Wang
Blue InGaN chip-pumped short-wave infrared (SWIR) emitters have aroused tremendous attention and shown emerging applications in diverse fields such as healthcare, retail, and agriculture. However, discovering blue light-emitting diode (LED)-pumped SWIR phosphors with a central emission wavelength over 1000 nm remains a significant challenge. Herein, we demonstrate the efficient broadband SWIR luminescence of Ni2+ by simultaneously incorporating Cr3+ and Ni2+ ions into the MgGa2O4 lattice, with Cr3+ as the sensitizer and Ni2+ as the emitter. Because of the strong blue light absorption of Cr3+ and high energy transfer efficiency to Ni2+, the obtained MgGa2O4:Cr3+, Ni2+ phosphors show intense SWIR luminescence with a peak wavelength at 1260 nm and a full width at half maximum (FWHM) of 222 nm under the excitation of blue light. The optimized SWIR phosphor presents an ultra-high SWIR photoluminescence quantum efficiency of 96.5% and outstanding luminescence thermal stability (67.9%@150 °C). A SWIR light source has been fabricated through a combination of the prepared MgGa2O4:Cr3+, Ni2+ phosphor and a commercial 450 nm blue LED chip, delivering a maximum SWIR radiant power of 14.9 mW at 150 mA input current. This work not only demonstrates the feasibility of developing broadband high-power SWIR emitters using converter technology but also presents new insights into the importance of SWIR technology.
研究领域:
材料科学
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光电子学
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固态照明
·
光子学
·
红外发射
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Qiang Yang,Peixin Cui,Cun Liu,Guodong Fang,Meiying Huang,Qiuyue Wang,Yiyi Zhou,Hongbo Hou,Yujun Wang
The stabilization of heavy metals adsorbed in the spent biochar remains a challenge, and the risk of secondary pollution under environmental changes will rise under inadequate post-treatment. Moreover, the safe and sufficient re-utilization of the spent biochar with heavy metals loaded have attracted extensive attention. In this research, the performance and mechanism of rice straw biochar (RSBC) pyrolyzed at different temperature for nickel and cobalt adsorption were investigated, and the stabilization of the adsorbed heavy metals was achieved via a simple two-step strategy: the adsorption of metal ions and the hydrothermal process to form the stable layered double hydroxides (LDH) on biochar, with a leaching rate below 0.005% evaluated by EPA toxicity characteristic leaching procedure (TCLP). Meanwhile, the stabilized RSBC-LDH can be reused as an excellent catalyst in the activation of peroxymonosulfate (PMS) to degrade organic pollutants efficiently. This work eliminated the risk of heavy metal desorption from the spent biochar, and enabled a new strategy for the optimized utilization of biochar in environmental remediation.
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高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-11
·
IF 4.259
Zhou Yang,Yuan Shaofei,Liu Qian,Yan Dandan,Wang Yun,Gao Li,Han Juan,Shi Haifeng
In this paper, an efficient and convenient Fe 3 O 4 /PMG/IDA-Ni 2+ nanoparticles that applied to purify and immobilize his-tagged β-glucosidase was synthesized, in which, Fe 3 O 4 /PMG (poly ( N, N’- methylenebisacrylamide-co-glycidyl methacrylate) core/shell microspheres were synthesized firstly using distillation-precipitation polymerization, then iminodiacetic acid (IDA) was used to open epoxy rings on the shell of microspheres to the combination of Ni 2+ . The gene of β-glucosidase that was from Coptotermes formosanus Shiraki was amplified, cloned into the expression vector pET28a with an N-terminal His-tag, and expressed in E.coli BL21. The nanoparticles showed the same purification efficiency as commercial nickel column which was a frequently used method in the field of purifying his-tagged proteins from crude cell lysates. The results indicated that Fe 3 O 4 /PMG/IDA-Ni 2+ nanoparticles can be considered as an excellent purification material. β-glucosidase was immobilized on the surface of Fe 3 O 4 /PMG/IDA-Ni 2+ to form Fe 3 O 4 /PMG/IDA-β-glucosidase by means of covalent bound with imidazolyl and Ni 2+ . The immobilized β-glucosidase exhibited excellent catalytic activity and stabilities compared with free β-glucosidase. In addition, immobilized β-glucosidase can be recycled for many times and retain more than 65% of the original activity. The materials display enormous potential in the aspect of purifying and immobilizing enzyme.
研究领域:
生物化学
·
生物技术
·
酶学
·
纳米技术
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）