INORGANICA CHIMICA ACTA
·
2023
·
IF 2.8
Tian-Yu Zhang,Xue-Qian Wu,Heng-Yu Ruan,Yi Yuan,Le Wang,Ya-Pan Wu,Qing-Wen Han,Ruan Chi,Dong-Sheng Li
Designing economical and efficient anode catalysts is critical for the commercial use of direct alcohol fuel cells (DAFCs). In this work, a novel Ni(II)-based metal–organic framework (MOF), {[Ni 3 ( μ 3 -OH)(TMBTI)(1,4-bib)(H 3 O)} n (H 6 TMBTI = 2,4,6-trimethylbenzene-1,3,5-triylisophthalate, 1,4-bib = 1,4-bis(1-imidazoly)benzene) (CTGU-38, CTGU = China Three Gorges University), was successfully synthesized through solvothermal method. Structural analyses reveal that the CTGU-38 possesses a unique Ni 6 ( μ 3 -OH) 2 (COO) 12 cluster and 3D porous framework with a rare (6,16)-connected topology. Further electrochemical experiments demonstrate that the CTGU-38 exhibits good electrocatalytic oxidation performance towards various alcohol fuel molecules, including the methanol oxidation reaction (MOR), ethanol oxidation reaction (EOR), n -propanol oxidation reaction (NPOR), and isopropanol oxidation reaction (IPOR), with peak current densities ranging from 26.9 to 54.46 mA cm −2 in alkaline solution. These results indicate that the CTGU-38 appears to be a potential non-noble metal-based electrocatalyst for DAFCs, and this work provides new insights into the design of more efficient electrocatalysts at the atomic scale for energy conversion.
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高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2019
·Vol. 43
·期 8
·3284-3294
·
IF 3.343
Xiaoyang Wan,Xuefeng Wei,Juan Miao,Ruichang Zhang,Jun Zhang,Qingshan Jason Niu
Summary A wide compositional range of Pd-Ni/Cd on polypyrrole (PPy)-modified Ti plates (Pd-Ni/Cd/PPy/Ti) was fabricated via electrochemical deposition. The hydrogen absorption properties of the prepared Pd-Ni/Cd/PPy/Ti electrodes were evaluated using cyclic voltammetry and chronoamperometry in acidic media. The optimal Pd 36 -Ni 7 /Cd 57 /PPy/Ti electrode achieved a hydrogen storage capacity of 331.3 mC cm −2 mg −1 and an H/Pd ratio of 0.77. The enhancement of the hydrogen storage was attributed to a synergistic effect between the Pd-Ni/Cd catalysts. The surface morphology, crystallinity, and chemical composition of the Pd-Ni/Cd/PPy/Ti electrode were characterized using scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), respectively. Hydrogen spillover occurred on the trimetallic catalysts, and secondary hydrogen spillover occurred on the PPy/Ti support. The enhanced hydrogen sorption capacity was due to both the synergistic effect of the trimetallic catalysts and the assistance of PPy, making Pd-Ni/Cd/PPy/Ti a promising hydrogen storage material.
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高影响因子
AICHE JOURNAL
·
2022
·Vol. 68
·期 11
·e17831
·
IF 4.167
Chong Peng,Peng Liu,Zhiming Zhou,Xiangchen Fang,Yun-Xiang Pan
Phenanthrene hydrogenation is a key reaction for improving the quality of gasoline and diesel. Herein, we conduct detailed thermodynamic and kinetic analyses for phenanthrene hydrogenation on a Ni-Mo/HY catalyst. We establish a comprehensive reaction network for phenanthrene hydrogenation, and calculate equilibrium constant, rate constant, adsorption constant, activation energy barrier, and reaction energy for each step in the reaction network. All of the steps in the reaction network are revealed to be exothermic. A kinetic model with 28 parameters is constructed for phenanthrene hydrogenation. The deviation of the product yields calculated by the kinetic model from those obtained in experiments is less than 4.5%, indicating the reasonability and accuracy of the kinetic model. The most favorable pathway for phenanthrene hydrogenation is demonstrated to be phenanthrene → tetrahydrophenanthrene → sym-octahydrophenanthrene → 5,6-butyl-tetrahydronaphthalene → tetralin. These results are helpful for efficiently tuning catalyst properties and optimizing reaction conditions for enhancing phenanthrene hydrogenation.
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GREEN CHEMISTRY
·
2017
·Vol. 19
·期 8
·1895-1903
·
IF 9.125
Yongxiang Zhai,Chuang Li,Guangyue Xu,Yanfu Ma,Xiaohao Liu,Ying Zhang
Lignin primarily composed of methoxylated phenylpropanoid subunits is an abundant biomass that can be used to produce aromatics. Herein, a series of non-precious bimetallic Ni–Fe/AC catalysts were prepared for efficiently depolymerizing lignin. When organosolv birch lignin was used to determine the efficiency of the catalysts in methanol solvent, the Ni1–Fe1/AC (the ratio of Ni and Fe was 1 : 1) achieved the highest total yield of monomers (23.2 wt%, mainly propylguaiacol and propylsyringol) at 225 °C under 2 MPa H2 for 6 h. From GPC analysis, it is also proved that lignin was efficiently depolymerized. The Ni–Fe alloy structure was formed according to XRD, HRTEM, H2-TPR and XPS characterization. Based on the model compounds’ tests, the Ni1–Fe1/AC catalyst showed high efficiency in ether bond cleavage without hydrogenation of aromatic rings which could be attributed to the synergistic effect of Ni and Fe on the alloy structure. The total yield of monomers by using the Ni1–Fe1/AC catalyst reached 39.5 wt% (88% selectivity to PG and PS) when birch wood sawdust was used as the substrate.
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高影响因子
Journal of Biobased Materials and Bioenergy
·
2017
·Vol. 11
·期 5
·477-482
·
IF 0.975
Xu Jianxiong,Xie Shaowen,Li Changyun,Xu Lijian
Hierarchically nanoporous silicon hydrogen compound particles were synthesized by dissolving template method, and the hierarchically nanoporous Pd–HSiO1.5 were further prepared by in-situ synthesis method. The microstructure and morphology of the nanoparticles
were characterized by the transmission electron microscopy (TEM). In addition, the hierarchically nanoporous Pd–HSiO1.5/Ni–Co composite electrode was fabricated by the method of nanocomposite electrodeposition, in which hierarchically nanoporous Pd–HSiO1.5
particles were used as composite nanoparticles on the Ni–Co electroplating bath. The surface morphology was characterized by the scanning electron microscopy (SEM). Finally, the sensor was used to detect the tetracycline antibiotics with different classes. Results showed that the hierarchically
nanoporous silicon hydrogen compound particles were with hollow spherical structure. The size of the hollow spheres was about 70 nm, and the thickness of the spherical shell was about 10 nm. The Pd nanoparticles were successfully loaded on the inside and surface of the hierarchically nanoporous
silicon hydrogen compound. The size of the inside Pd nanoparticles was about 3 nm, and the size of surface Pd nanoparticles was 10–30 nm. In addition, the SEM image showed that the hierarchically nanoporous Pd–HSiO1.5 particles were uniformly inlaid on the surface of
the hierarchically nanoporous Pd–HSiO1.5/Ni–Co composite electrode. The composite electrode had high electrocatalytic activity and showed high electrochemical sensitivity in the detection of the oxytetracycline and deoxytetracycline in alkaline medium. The obtained detection
limits were 1.0 × 10–8 M and 5.0 × 10–8 M for oxytetracycline and deoxytetracycline, respectively.
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ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Linjia Li,Yiran Zhang,Jiaqi Feng,Shu Zhao,Ke Li,Zhen Huang,He Lin
Integrated carbon capture and utilization (ICCU), based on dual-function materials (DFMs), is an emerging technology for carbon dioxide (CO2) emission control. DFMs composed of Ni–Ca–Al systems are favored owing to their affordability. However, their performance needs to be further improved. In this study, Ni/AlCaOx DFMs are prepared by one pot-impregnation method, reaching an adsorbing capacity of 1796 μmol CO2/gDFM and a production of 1790 μmol CH4/gDFM after ten cycles at 450 °C. The Ni–Ca–Al synergistic effect was investigated to understand the good performance of DFMs: during H2 pretreatment, Ca can weaken the strong interaction of Al–Ni and promote the reduction of NiO by facilitating Ni to gain electrons from H2, where Al may act as an intermediate carrier for electron transfer. In the carbonation process, Al modulates the synergistic interaction between Ca and Ni by regulating the spacing and distribution of catalytic and adsorption sites to improve the Ni/AlCaOx cycling performance. Besides, oxygen vacancies can also enhance the DFMs’ carbon capture performance. During the methanation process, Ni reduces the decomposition temperature of the carbonate formed at strongly basic sites, favoring the methanation reaction.
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AICHE JOURNAL
·
2025
·
IF 4
Xingchun Shi,Qian Zhang,Jinting Wu,Haijiao Lu,Hao Qin,Xiao-Dong Zhu,Jian Gao,Yong-Chao Zhang
Electrocatalytic oxidation of 5-hydroxymethylfurfural (HMFOR) offers an energy-efficient route to high value-added chemicals. There is an urgent demand for high-performance non-precious metal catalysts. Herein, the oxygen-deficient FeO/NiO/Ni was synthesized, which has high performance for HMFOR with a conversion rate of 100%, a selectivity of 98.6% for 2,5-furandicarboxylic acid (FDCA), and a Faradaic efficiency of 94.1% at 1.5 V (vs. RHE), superior to most reported non-precious metal catalysts. The efficient catalytic activity of FeO/NiO/Ni is attributed to the high specific surface area and enhanced adsorption and activation of HMF by oxygen vacancies, thereby reducing the rate-limiting step energy barrier of 5-hydroxymethyl-2-furancarboxylic acid to 5-formyl-furancarboxylic acid (*HMFCA→*FFCA). Ni 3+ acts as the active site for direct HMF oxidation catalysis, while Fe doping induces oxygen vacancies that facilitate the formation and stabilization of Ni 3+ species, enhancing their formation and catalytic functionality.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Bo Ran,Ping Hu,Jun Sun,Jialu Fang,Yan Li,Qihua Sun,Zhizhong Zhang,Zhaofeng Wu,Haiming Duan
This study presents a N 2 H 4 sensing material based on a Ni-MOF@BC heterostructure fabricated via a solvothermal route. The composite shows room-temperature sensing properties with a broad linear detection range and low detection limit. The performance mechanism is governed by a synergistic effect that combines the conductive network of BC for accelerated charge transfer, the catalytic activity of Ni-MOF, a built-in electric field for efficient charge separation, and hierarchically porous channels for enhanced gas permeation. A key structural feature, ligand competition-induced lattice distortion forming η -NiO 6 octahedra, is identified as crucial for the high selectivity toward N 2 H 4 . This unique distortion optimizes the adsorption energy and facilitates orbital hybridization between the sensor and N 2 H 4 molecules, leading to a stronger and more specific interaction. Furthermore, the material features intelligent humidity-responsive mode-switching, enabling dual-purpose detection across varying ambient conditions. By utilizing Lyocell-derived carbon, this work exemplifies a sustainable design strategy for multifunctional sensing materials, offering a promising route toward low-power, adaptive gas monitoring technologies.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Chen Boyang,Liu Xinyu,Liu Yiyuan,Gao Zeliang,Zhang Kun,Mu Wenxiang
Semiconductor X-ray detectors have attracted considerable attention recently owing to their high sensitivity and excellent stability. Among them, semi-insulating β-Ga 2 O 3 stands out due to its superior thermal stability, high breakdown electric field, and high crystal quality, enabling the fabrication of high-performance detectors suitable for various working environments. In this study, Ni 2+ was introduced into β-Ga 2 O 3 as a deep-level acceptor via doping engineering. A high-resistivity Ni-doped β-Ga 2 O 3 crystal was grown using the edge-defined film-fed growth (EFG) method. X-ray fluorescence spectrometer (XRF) confirmed a Ni doping concentration of 0.544 at%. The crystal exhibited a rocking curve with a full width at half maximum (FWHM) of 65.13 arcsec and clear, symmetric Laue patterns. The ultraviolet–visible (UV–Vis) transmission spectrum showed a cutoff edge at 265.5 nm, yielding a bandgap of 4.67 eV. Moreover, the semi-insulating behavior of Ni: β-Ga 2 O 3 was indicated by the infrared absorption edge extended beyond 10 μm. Raman spectroscopy revealed lattice distortion due to Ni 2+ incorporation, causing shifts in peak positions and intensities without phase change. A metal–semiconductor–metal (MSM)-structured X-ray detector based on Ni: β-Ga 2 O 3 was fabricated and characterized under various biases and dose rates. The device exhibited excellent stability at 1000 V with a high sensitivity of 663.36 μC/Gy·cm 2 , outperforming detectors from other semi-insulating β-Ga 2 O 3 crystals due to its superior crystal quality and high breakdown strength. Furthermore, low oxygen vacancy concentration contributed to fast response times of 0.20 s (rise) and 0.23 s (fall). The detection limit was estimated to be 12.04 nGy/s, highlighting its potential for low-dose X-ray detection.
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zhi Zou,Bin Xie,Hang Liu,Boyi Situ,Yun-Chao Yin,Xueshan Hu,Yue Xu,Wenbin Liu,Junna Shi,Yuanyuan Yao,Yizhou Zhu,Jiayu Wan
Battery recycling via direct regeneration has emerged as a next-generation strategy to simultaneously address environmental pollution and resource waste issues caused by end-of-life lithium-ion batteries. While previous research on direct regeneration has mainly focused on materials or repair processes, it has overlooked the impact of lithium fluoride (LiF) impurities, which can significantly degrade the electrochemical performance of regenerated materials. Through combined experimental characterization and computational simulations, we have experimentally confirmed the ubiquitous presence of LiF on spent LiNi0.82Co0.12Mn0.06O2 cathodes and elucidated its formation mechanism via first-principles calculations. To address this challenge, we developed a direct recycling strategy combining an acid-wash pretreatment with a high-temperature regeneration process. The acid wash effectively eliminates residual lithium fluoride impurities, thereby enhancing the lithium-ion transport dynamics. The solid-sintering regeneration simultaneously achieves lithium replenishment along with structural restoration, including microcrack restoration and phase transformation from rock salt to a layered structure. The purified regenerated LiNi0.82Co0.12Mn0.06O2 cathodes produced through our strategy demonstrate an initial discharge capacity of 197.37 mAh·g–1 with a 7.2% enhancement compared to their nonpurified counterparts. Remarkably, the purified regenerated LiNi0.82Co0.12Mn0.06O2 cathodes exhibit a superior rate capability and cycling stability. This work not only uncovers the formation mechanism of lithium fluoride and its critical role in degrading the performance of regenerated batteries but also offers an effective strategy for the practical direct recycling of spent Ni-rich cathodes.
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高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·10062
·
IF 15.7
Tian Dehua,Liang Yinlan,Zheng Zhaoke,Mao Liang,Cai Xiaoyan,Chen Yizhen,Wang Xiangxian,Liu Xiaolei,Li Juan,Wang Zeyan,Xue Can,Li Baojun,Lou Zaizhu
Photocatalytic methanol dehydration to dimethyl ether (DME) offers a sustainable alternative to energy-intensive thermocatalysis, yet its practical application remains constrained by low efficiency. Herein, we designed Ni-doped plasmonic W 18 O 49 nanowires that synergistically integrates low-coordinated W and Ni dual active sites with surface plasmon resonance for enhanced photocatalytic performance. The synergistic effect of W and Ni dual sites is amplified by plasmonic electron oscillations to facilitate the C-O bond cleavage and C-O-C coupling, driving efficient methanol-to-DME conversion. The optimized Ni 0.66 -W 18 O 49 achieves a DME yield of 133.7 ± 3.3 mmol g -1 h -1 with 98.7% selectivity under 400 mW cm -2 illumination. The versatility of the catalyst is demonstrated through C 2+ alcohol dehydration, achieving 40-80% rate enhancements and a recorded isobutylene yield of 3.7 mol g -1 h -1 . This study highlights the huge potential of rationally engineered plasmonic semiconductors in solar-driven chemical synthesis, particularly for C-O bond activation and coupling reactions.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2025
·
IF 2
Lu Shuai,Huang Kang,Sun Xiaowei,Xue Wei,Zhang Zequn,Zhang Bowei,Wu Junsheng
The stability of the gas film in the cathode plasma electrolytic deposition (CPED) process is essential for producing high-quality coatings. In this work, cationic cetyltrimethylammonium bromide (CTAB), anionic sodium dodecyl sulfate (SDS), and nonionic polyvinylpyrrolidone (PVP) surfactants were added to the electrolyte to regulate the gas film. Force balance analysis of individual bubbles demonstrated that surfactants effectively reduced surface tension, resulting in thinner gas films and lower energy consumption. With 3 g/L of CTAB, SDS, and PVP, energy consumption was reduced by 67.21%, 60.97%, and 73.58%, respectively. Based on the polarity and electrostatic interactions of the surfactants, the mechanisms by which the three surfactants affect gas film uniformity and the deposition process were revealed. CTAB reduced gas film uniformity due to the attraction of opposite charges, leading to cross-sectional defects. In contrast, SDS improved gas film uniformity through the repulsion of negative charges, reducing coating roughness and increased thickness. PVP exhibited intermediate effects, producing dense coatings with slightly lower thickness. This work provides a new perspective for regulating the CPED process and lays the groundwork for exploring alternative methods to stabilize CPED operations.
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