CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Leyang Li,Ruiyang Sun,Rui Yuan,Manpeng Lin,Linlin Wang,Qi Wang,Jiguo Tu,Handong Jiao,Shuqiang Jiao
Molten-salt electrorefining (MSE) is currently the primary method for purifying many elements, offering promise for the sustainable upcycling of spent metals in the future. However, the conventional constant-current electrolysis protocol inevitably leads to deterioration of the microenvironment near the electrode, leading to reaction runaway and process inefficiency. In this work, we comprehensively studied for the first time the effect of constant- and pulse-electrolysis protocols on environmental evolution in electrode–electrolyte interfaces during the MSE of Ti, using a computer model. The results showed that compared to constant electrolysis, pulse-electrolysis protocols could effectively regulate the interfacial microenvironment and improve the electrorefining efficiency. Furthermore, a correlation between interfacial reconstruction and pulse parameters was established, indicating that the duty ratio was the key factor in inhibiting the deterioration of the interfacial microenvironment. To further verify the simulation results, the real-time morphological evolution of the electrodes during electrolysis was monitored by a novel in situ X-ray computed tomography (CT) technology under pulse-electrolysis protocols. The experimental results indicated that the pulse-electrolysis protocols enhanced the interfacial microenvironment and promoted electrolysis efficiency. Collectively, this work demonstrated that MSE could be effectively advanced by rationally designing the pulse-electrolysis protocols, facilitating its large-scale application in industry.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Yanling Wang,Yu Wang,Wensheng Fu,Guanyun Gao,Yanru Liu,Lei Wang
The preparation of low-cost and high-activated catalysts is an important challenge in the development of hydrogen production industry. Here we reported a novel core-shell triangular cone electrocatalyst Ni 3 S 2 @Ni 3 N@Co 2 N 0.67 grown on nickel foam (Ni 3 S 2 @NiCoN/NF) obtained by a self-templated method. The obtained Ni 3 S 2 @NiCoN/NF consists of Ni 3 S 2 triangular cone core and Ni 3 N@Co 2 N 0.67 particles shell, which has rich heterogeneous interface and synergistic effect. The strong electronic interaction at the newly bonded heterojunction regulates the electronic structure of active Ni, which is conducive to the transfer of charge to the active site. In addition, NiCoN particles are coated on the surface of Ni 3 S 2 triangular pyramidal nucleus to form a core-shell structure, which can make sure the exposure of active sites. It is found that the self-templated conversion of Co(OH) 2 coated Ni 3 S 2 into NiCoN/Ni 3 S 2 enhances the activity for hydrogen evolution reaction (HER). The hybrid material has excellent HER catalytic performance under alkaline conditions, which only needs to overcome the overpotential of 63 and 174 mV to reach the current density of 10 and 100 mA cm −2 , respectively. This study provides a new idea for the preparation of efficient and stable catalysts with core-shell structure for HER.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Vu Van Thuy,Nguyen Truong Son,Vu Hoang Ha,Le Xuan Duong,Tran Viet Thu
Prussian blue analogues (PBAs) are promising positive electrodes in sodium-ion batteries because of their three-dimensional structure, high capacity, and low-cost. In this work, we synthesize sodium-rich nickel-cobalt hexacyanoferrate (Na-rich NixCoyHCF) and study the influence of Na+ incorporation on the structure and electrochemical properties of the resulting material alongside NixCoyHCF, NiHCF, and CoHCF. The Na+ incorporation introduces minor lattice distortions but retains the fundamental crystal structure of NixCoyHCF and facilitates Na+ diffusion. Na-rich NixCoyHCF exhibited significantly enhanced specific capacity of 303.15 F/g at a current density of 1.0 A/g in aqueous electrolyte compared to its non-Na+ counterparts. The assembled hybrid device delivered a high energy density of 166.15 μWh cm-2 at a power density of 1800 μW cm-2 and 83.7% capacity retention over 2000 cycles at 5 mA cm-2. These results indicate the Na+ incorporation is an efficient strategy to prepare high-performance electrode for aqueous Na-ion storage.
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高影响因子
Matter
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2025
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IF 17.5
Shining Wu,Yuting Zhang,Guanwu Li,Yifeng Hou,Mengyang Cao,Chengyu Wei,Pengkun Yang,Lu Huang,Yingpeng Wu
High-entropy alloys (HEAs) have a wide range of applications due to their excellent physical and chemical properties. However, traditional synthesis routes always require high temperatures over 923 K or have high equipment requirements. Here, we developed a liquid metal gallium (Ga)-mediated strategy using only a commercial vortex mixer and metal powders to synthesize HEAs near room temperature (303 K) with low power (7 W). A variety of HEAs were successfully prepared, and the yield can be expanded to over 10 g each time. The mechanistic investigation proved that Ga continued to flow under the mechanical force and exposed fresh surfaces to contact the metal, thereby promoting the process of metal dissolution in Ga and forming HEAs. These as-prepared HEAs can be used for catalysis in electrochemical oxygen evolution reactions with low overpotential and high durability. This strategy provides an innovative method for low-energy synthesis of HEAs at room temperature.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Qingming Zeng,Yanjun Wen,Xiaoguang Duan,Xing Xu,Jing Tan,Qingyan Zhang,Yilin Liu,Qingyi Zeng
In this work, we revealed a dual-pathway nonradical oxidation (NRO) system catalyzed by Ni single atom catalyst (NiN 4 ) accommodated in the carbon nitride substrate. The monatomic Ni coordinated with four N atoms (Ni-N 4 ) is determined as the dynamic catalytic center for peroxymonosulfate (PMS) activation, showing an exceptional specific rate constant of 3.34 min −1 g −2 L −2 (29.7 times that of CN/PMS system) in oxidizing bisphenol A and other refractory organics. In situ Raman, X-ray absorption, and electrochemical analyses as well as theoretical simulations demonstrate that the Ni-N 4 sites exhibit strong interaction with PMS benefited from the modulated electronic structures, resulting in nonradical surface-bonding active complexes (NiN 4 -PMS*) and deuterogenic high-valent Ni(IV)-Oxo species. The dual-pathway NRO process will spontaneously coordinate both electron transfer process via CN matrix and direct electron transfer by Ni(IV)-Oxo for selective organic oxidation with excellent anti-interference ability and adaptability.
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高影响因子
SURFACE & COATINGS TECHNOLOGY
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2025
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IF 6.1
Jingsi Wang,Shuang Liu,Guibin Lou,Ya Chen,Haozhe Pang,Yachao Song,Syed Mesum Raza Naqvi,Kai Zhou,Zongjun Tian,Muhammad Ali Nasir,Dongsheng Wang,Lida Shen
High infrared emissivity coatings have important engineering value in aerospace and electronic devices. In this study, a new method for preparing high infrared emissivity coatings using magnetic field-assisted jet electrodeposition was prepared. The magnetic field-assisted jet electrodeposition technique can be used to prepare coatings with rough structures, and the infrared emissivity of nickel particle coatings can reach 0.80 at a magnetic field intensity of 100 mT, which is significantly improved compared with the nickel coatings (0.155) prepared by conventional electrodeposition. A nickel-based SiC composite coating with high infrared emissivity was prepared by combining magnetic field-assisted jet electrodeposition with SiC particles. Compared with the nickel particle coating, the infrared emissivity of the nickel-based SiC composite coating is further improved. At a concentration of 6 g/L SiC particles, the infrared emissivity of the nickel-based SiC composite coating reached 0.94. The synergistic effect of magnetic field-assisted jet electrodeposition and SiC particles can realize the nickel coatings into coatings with high infrared emissivity.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Hui Wan,Meng-Yuan Xie,Bo Li,Jian-Hang Nie,Tao Huang,Lei Li,Jing-Hui Shi,Ming-Hua Xian,Jia-Rong Huang,Wangyu Hu,Gui-Fang Huang,Fei Gao,Wei-Qing Huang
Transition metal (oxy)hydroxides are potential oxygen evolution reaction (OER) electrocatalysts; however, simultaneously modulating multiple factors to enhance their performance is a grand challenge. Here, we report an incorporating heteroatom strategy via one-step hydrothermal approach to adjust more than one factor of Mn-doped NiFe (oxy)hydroxide (Mn-NiFeOOH/LDH) heterojunction . Mn doping regulates heterojunction morphology (reducing nanoparticles and becoming thinner and denser nanosheets), Ni/Fe ratio and valence states (Ni 2+ , Ni 3+ , and Ni 3+Δ ) of Ni ions. The former could effectively increase surface active sites, and the latter two reduce the content of Fe in the Mn x -NiFeOOH/LDH heterojunction, enabling more Ni 2+ convert to Ni 3+/3+Δ that have higher intrinsic OER activity. As a result, the first-rank Mn-NiFeOOH/LDH with ultra-low overpotential of 185 mV@20 mA cm −2 and 296 mV@500 mA cm −2 , and the improved OER performance are outdo to those of commercial RuO 2 catalyst for OER. Moreover, the Mn-NiFeOOH/LDH affords the earliest initial potential (1.392 V vs. RHE), corresponds to a recorded low overpotential (162 mV). Based on the density functional theory (DFT), Mn dopants can alter intermediate adsorption energy and effectively decrease *OOH’s energy barrier. This research exhibits a feasible strategy to design low cost electrocatalysts and provide new possibilities for future industrialization.
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高影响因子
JOURNAL OF CATALYSIS
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2024
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IF 6.5
Yixuan Wang,Hongyan Ban,Yugao Wang,Ruwei Yao,Shimin Zhao,Jiangliang Hu,Congming Li
Basic sites profoundly affect the mode and strength of CO 2 adsorption in the hydrogenation of CO 2 to formic acid (FA), however, the mechanism by which the quantities and strength of basic sites affect the reaction process is not yet clear. Herein, a Ni/Mg a AlO x catalyst has been developed and the basic sites of the catalyst can be modulated by simply altering the Mg/Al ratio. Through a series of characterizations and experiments, it was observed that weak and medium basic sites synergistically catalyzed the hydrogenation of CO 2 to formic acid, and a reasonable number of weak basic sites can improve reaction performance when a sufficient number of medium basic sites guarantee the fundamental catalytic activity. Moreover, the number and distribution of basic sites are also tightly related to metal-support interactions. This strategy provides theoretical guidance and a feasible scheme for optimizing the performance of non-precious metal heterogeneous catalysts.
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高影响因子
ADVANCED MATERIALS
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2025
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IF 26.8
Dashuai Li,Qi Wu,Changhua Wang,Zhehao Sun,Yingying Li,Zongyou Yin,Yichun Liu,Xintong Zhang
Transition metal high-entropy alloys (HEAs) demonstrate exceptional catalytic performance due to their structural complexity, featuring rich local atomic configurations, tunable electronic structures, and abundant active sites. However, this structural versatility poses both thermodynamic and kinetic challenges to conventional wet-chemical synthesis routes. Herein, we develop a novel solution plasma strategy that enables the direct synthesis of HEA catalysts in aqueous media. Through the FeCoNiCrMn electrode discharge in pure water, uniform HEAs nanoparticles (≈200 nm) are successfully anchored onto a variety of oxide substrates. The HEAs/TiO 2 catalyst achieves a CO generation rate of 298.1 mmol/g HEAs /h, representing ca. an order-of-magnitude higher activity than single-metal catalysts under both thermocatalytic and photothermal conditions. Advanced structural characterization reveals a dual-phase core-shell architecture consisting of a metallic alloy core and surface oxides preferentially enriched at CrMn sites. This spatially resolved structure enables cooperative catalysis, where CrMn-rich oxide domains promote H 2 dissociation, CoNi metallic regions facilitate CO 2 reduction, and Fe sites present in mixed valence states serve as electron and oxygen transfer bridges. We further identify a self-limiting oxidation mechanism intrinsic to plasma synthesis, which ensures charge redistribution at the metal-oxide interfaces and synergistically enhances photothermal catalysis. This work establishes an energy-efficient synthetic route for HEAs and elucidates structure-function relationships critical for advancing multimetallic catalytic systems.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Yun Tian,Jie Qu,Kejia Wu,Mengqiao Gao,Jinxing Long,Qiang Zeng,Wei Qi,Xuehui Li
Conversion of lignin to value-added chemicals with endogenous hydrogen is of great significance but highly challengeable. In this work, an external hydrogen-free strategy has been proposed for aqueous transfer hydrogenolysis of lignin launched by the chemo-splitting of water using a series of Ni-Co bimetallic catalysts. With Ni 0.2 Co 0.1 -MgAl-LDO, 82.7 % of lignin conversion was achieved, affording a 20.8 % yield of monophenols, and 62.0 % of which was identified as 4-ethylphenol (yield of 12.9 %). Further investigations demonstrated that the lignin hydrogenolysis was triggered by the water splitting, and enhanced by the tandem demethoxylation and subsequent aqueous reforming reaction. Intensive characterizations using TEM, XPS and XAFS, etc, illustrated that the formation of highly dispersed Ni-Co alloy nanoparticles exhibited a strong metal-support interaction with MgAl-LDO. The electronic transfer effect between Ni and Co components and the strong basic sites are responsible for its excellent catalytic performance of Ni 0.2 Co 0.1 -MgAl-LDO on the lignin hydrogenolysis. Therefore, this work provides novel insight into the catalytic transfer hydrogenolysis of lignin.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Riyang Shu,Yu Chen,Yuankai Lin,Yongyuan Deng,Yan Liu,Kaixin Li,Tao Yin,Zhongqing Ma,Jinxing Long
Catalytic hydrodeoxygenation (HDO) is an efficient and promising approach to upgrade lignin-derived phenolic compounds for the production of high-quality liquid fuels. In this work, a readily obtained Ni-Ni 3 P/ZrP catalyst featuring synergistic catalytic sites of Ni-Ni 3 P and Lewis-Brønsted acid was provided for promoting the HDO performance of lignin-derived phenolic compounds. By regulating the ratio of Zr to P (Zr/P), the catalytic activity of Ni/ZrP was significantly modified. With the optimized catalyst of Ni-Ni 3 P/ZrP-0.75, guaiacol is completely converted into cyclohexane at a low temperature of 240 °C. Further investigation shows that the synergistic effect of Ni and Ni 3 P, deriving from that Ni acts as metal site to activate hydrogen and Ni 3 P serves as Lewis acid site to adsorb guaiacol substrate, promotes the hydrogenation procedure significantly. Moreover, ZrP support as Lewis acid also demonstrates a synergistic interaction with Brønsted acid site that derives from the P-OH group. The coordination of Lewis-Brønsted acid site significantly improves the deoxygenation procedure. The strong interaction between Ni species and ZrP support accelerates the sequential occurrence of hydrogenation and deoxygenation procedures, thus improving the HDO efficiency. The Ni-Ni 3 P/ZrP-0.75 can be reused at least six runs without significant activity loss. Moreover, this Ni-Ni 3 P/ZrP-0.75 is efficient on the upgrading of realistic lignin-oil, with the hydrocarbon content increase from 13.4 % to 93.8 %. Therefore, this work provides a valuable reference for the rational design of bifunctional catalysts in the HDO reactions.
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高影响因子
JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Yi-Fei Di,Nan Bu,Jia Li,Jun Xiang,Xin Kang,Dong-Mei Ma,Yi-Bo Wang,Rong-Da Zhao,Fu-Fa Wu
The CoMoO 4 /NiCo 2 Se 4 nanocomposite, synthesized via hydrothermal and vapor deposition methods, demonstrates exceptional multifunctional performance for energy storage and electrocatalysis. As a supercapacitor electrode, it achieves a high specific capacitance of 6445.7 mF/cm 2 at 1 mA/cm 2 and retains 71.4 % capacitance after 5000 cycles, with an energy density of 753.9 μWh/cm 2 at a power density of 75.7 μW/cm 2 , attributed to the synergistic effects between the CoMoO 4 and the conductive NiCo 2 Se 4 . Furthermore, the material exhibits outstanding bifunctional catalytic activity for alkaline water splitting, delivering low overpotentials of 270.6 mV (oxygen evolution reaction) and 177.3 mV (hydrogen evolution reaction) at 50 and 10 mA/cm 2 , respectively, with Tafel slopes of 131.4 and 131.0 mV/dec. The cell voltage of overall water-splitting is 1.46 V (10 mA/cm 2 ) and a high stability performance for 14 h. The CoMoO 4 /NiCo 2 Se 4 not only ensures efficient ion/electron transport but also creates interfacial electronic modulation through heterointerfaces, while the hierarchical nanostructure facilitates electrolyte penetration, collectively advancing energy storage capability, catalytic kinetics, and overall conversion efficiency, thereby underscoring its dual-functional superiority.
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高影响因子
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