CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xifei Yin,Yinghui Sun,Yanbin Zhang,Xiaolong Wang,Ying Li,Tong Xu,Jie Bai
Dry reforming of methane (DRM) is a chemical reaction with great potential to convert CH 4 and CO 2 into valuable syngas. However, catalyst deactivation due to sintering and coking is a major obstacle for practical applications. Here, we synthesized a hollow tubular Ni/La 2 O 3 -ES catalyst via electrospinning (ES) method that surpasses conventional Ni/La 2 O 3 catalysts in both activity and stability. The ES-driven architecture creates confinement-stabilized Ni nanoparticles with improved metal-support interaction and spatial uniformity, achieving 93 % CO 2 conversion and 85.0 % CH 4 conversion at 800 °C for 20 h of continuous operation, providing long-lasting performance with no accumulation of carbon deposition. The carbon removal ability is strengthened in the Ni/La 2 O 3 -ES catalyst as evidenced by the CH 4 -CO 2 -TPSR experiments. Ni/La 2 O 3 -ES catalyst prefer to produce more active intermediates b-HCOO* as indicated in in situ DRIFTS spectra. The b-HCOO* species served as the key reactive intermediate that facilitated both CO 2 activation and the oxidative transformation of CH 4 -derived carbonaceous intermediates on catalytic surface. Additionally, the catalyst prepared by electrospinning method promoted lattice oxygen release and oxygen vacancy formation, thereby exhibiting superior catalytic activity and stability.
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Xingyu Hu,Hui Shi,Yilei Zheng,Penghui Shao,Liming Yang,Xubiao Luo
The sustainable recovery of valuable metals from end-of-life lithium-ion batteries (LIBs) has become essential for relieving the supply-demand contradiction of key resources. However, the high similarity in physicochemical properties of transition metals poses a fundamental challenge for the selective recycling. Here we proposed a facile strategy for defining the demarcation line of precipitation/dissolution behavior for precise Ni/Co separation. A malonic acid-based deep eutectic solvent (DES) is developed, emphasizing the H 2 O-mediated competitive coordination and differentiated solubility. We discovered the distinctive formation of [Ni(H 2 O) 6 ] 2+ and [CoCl 4 ] 2- in the DES-20 % H 2 O system. Furthermore, the K sp differences of the Ni-complex and Co-complex in the C 3 H 2 O 4 2- -rich environment was effectively magnified. These significant differences synergistically enable the generation of C 3 H 2 NiO 4 ·2H 2 O precipitation (∼ 99.9 % purity), achieving a remarkable Ni/Co separation factor of 125, which guarantees sequential separation of all metals. This universal methodology along with in-depth mechanism understanding provides a guideline toward value-added recovery of LIBs.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Siyuan Yin,Song Li,Muying Sun,Zhongsheng Wen,Juncai Sun
Transition metal oxides (TMOs) are promising high-capacity anodes for Li-ion batteries, but their low initial Coulombic efficiency (ICE) hinders practical application. Here, a Ni/Mn 3 O 4 composite was prepared via ball milling, where nano-Ni dispersion enhanced phase transition, increasing ICE from 39.7 % to 57.8 %. Nano-Ni reduced charge transfer resistance and enhanced pseudocapacitance contribution, improving kinetics. DFT calculations revealed Ni’s catalytic role in lowering the Li O bond-breaking energy barrier and suppressing irreversible phase transitions. TEM confirmed Ni-promoted Mn 3 O 4 phase transformation and accelerated early-stage reaction kinetics. This study provides a strategy for designing conversion-type anodes with high ICE and kinetics.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Yiran Sun,Sikai Dai,Yu Fan,Jiangyu Fang,Xingyue Zhou,Ruoqi Wang,Qixin Zhuang,Jun Qian,Peiyuan Zuo
The application of two-dimensional (2D) MXene nanomaterials in microwave absorption is severely limited due to their excessive conductive pathways caused by self-stacking and an inherent lack of magnetic loss. In this work, we developed length-tunable NPMO@MXene/Ni (PMNi) hybrids through dimensionality engineering and electrostatic self-assembly, converting the structure of MXene from 2D to one-dimensional (1D) configuration and loading them with magnetic nickel (Ni) nanosheets. The hollow, mesoporous structure of the aminofunctionalized periodic mesoporous organosilica (NPMO) matrix and the three-tier hierarchical structure of PMNi generated numerous heterogeneous interfaces, greatly enhancing interfacial polarization and dielectric loss capabilities. Furthermore, the overall electromagnetic parameters were optimized for impedance matching by regulating the NPMO microrod length. The experimental results and radar cross-section simulations revealed that all PMNi magnetic hybrids demonstrated impressive microwave absorption characteristics. Specifically, mainly depending on "2D-to-1D" dimensional reconstruction strategy, the PMNi-600 exhibited an impressive minimum reflection loss of -51.28 dB at a thickness of only 1.7 mm, with an effective absorption bandwidth of 5.16 GHz. This work presents a novel approach to enhance the microwave absorption performance of MXene-based materials through dimensional reconstruction strategy.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yirong Wang,Xuan Yu,Zhonghong Xia,Xuanrong Li,Ya Gao,Jing Zhang,Wuliang Feng,Xingli Zou,Yufeng Zhao
The high overpotential and sluggish kinetics of oxygen evolution reaction (OER) severely hinder the widespread application of electrochemical water splitting, especially at industrial-level current densities. Herein, we report a novel heterostructural Ni-based metal organic framework (MOF)-Ni 2 P in-situ grown on iron foam (NiMOF-Ni 2 P/IF), which shows remarkable OER activity and stability. We demonstrate that the work function difference between NiMOF and Ni 2 P leads to the strong electron coupling effect by promoting electron transfer at the interface and results in a discernible upward shift of the d-band center of Ni sites for favorable OH − adsorption. The as-fabricated NiMOF-Ni 2 P/IF exhibits an ultralow overpotential of 330 mV and a small cell voltage of 1.796 V to drive NiMOF-Ni 2 P/IF‖Pt/C system at 1000 mA cm −2 in 1 M KOH, outperforming the majority of state-of-the-art non-noble-metal-based electrocatalysts. Furthermore, the catalyst shows remarkable performance even under harsh industrial conditions of 40, 60, and 80 °C in 6 M KOH. In addition, NiMOF-Ni 2 P/IF holds great promise with remarkable stability of 200 h and 600 cycles in simulated seawater and secondary zinc-air batteries (ZABs), respectively. This work offers a rational design strategy for low cost, high activity, and long durability OER electrocatalyst based on in-depth comprehension of the electronic coupling effect.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Quanzhou Xu,Xing Fei,Xueqing Qiu,Xiaofei Wang,Tiejun Wang,Xuliang Lin,Sha Li,Yanlin Qin
The selective conversion of biomass-derived ethanol into higher alcohols is a desirable but challenging process for the efficient production of value-added chemicals from alternative carbon sources. However, the current catalysts used in ethanol coupling exhibit low conversion rates and yields towards the formation of higher alcohols, necessitating significant improvements in their efficiency for practical applications. In this work, a lignin-derived N-doped carbon- supported Ni catalyst for ethanol coupling was designed and synthesized. The Ni@NC catalyst, synthesized using diethylenetriamine as the nitrogen source with a mass ratio of nitrogen source to lignin of 2:1 and a molar ratio of metal to lignin of 20:1, demonstrated excellent performance, with an ethanol conversion rate of 81.1% and a yield of C 4+ alcohols reaching 35.3%. Experimental results and density functional theory (DFT) calculations suggest that nitrogen-doped lignin, in appropriate quantities, along with the metal active component, forms a Ni-N-C structure that controls charge redistribution between the support and the Ni catalyst. This structure hinders the interaction of reaction intermediates and inhibits the production of by-products in the decomposition reaction, resulting in a higher yield of C 4+ alcohols. This study presents a more cost-effective and efficient approach for developing ethanol-coupling catalysts and holds promise for expanding the utility of lignin-derived catalysts.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·
IF 0
Sun Qing,Yu Jiale,Zhao Youpu,Liu Hanhu,Li Chunsheng,Tao Jiajun,Zhang Jian,Sheng Jiawei
Iron-based catalysts are environmentally friendly, and iron minerals are abundant in the earth's crust, with great potential advantages for PMS-based advanced oxidation process applications. However, homogeneous Fe 2+ /PMS systems suffer from side reactions and are challenging to reuse. Therefore, developing catalysts with improved stability and activity is a long-term goal for practical Fe-based catalyst applications. In this study, we prepared Fe-HNTs nanoreactors by encapsulating a nitrogen-doped carbon layer with one-dimensional halloysite nanotubes (HNTs) using the molten salt-assisted method. Subsequently, Fe (Co, Ni) nanoclusters were anchored onto the nitrogen-doped carbon layer at a relatively low temperature (550℃), resulting in stable and uniform distribution of metal nanoclusters on the surface of HNTs carriers in the form of Fe-N x coordination. The results showed that the dissolution of the molten salt and leaching of post-treated metal oxides generated numerous mesopores within the Fe-HNTs nanoreactor, leading to a specific surface area more than 10 times that of HNTs. This enhanced mass transfer capability facilitates rapid pollutant removal while exposing more active sites. Remarkably, Fe-HNTs adsorbed up to 97% of tetracycline within 60 min. In the Fe-HNTs/PMS system, the predominant reactive oxygen species has been shown to be 1 O 2 , and the added tetracycline was degraded by more than 98% within 5 min. The removal of tetracycline was maintained above 96% in the presence of interfering factors such as wide pH (3–11) and inorganic anions (5 mM Cl − , HCO 3 − , NO 3 − , and SO 4 2− ). The investigated mechanism suggests that efficient degradation and interference resistance of the Fe-HNTs/PMS system is attributed to the synergistic effect between the rapid adsorption of porous structure and the non-radical ( 1 O 2 )-dominated degradation pathway. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Shuna Jia,Zhijiang Dong,Zhiqiang Wang,Boxiong Shen,Honghong Lyu
Efficient catalytic reduction of the main greenhouse gas CO 2 into high value-added chemicals is an important measure to alleviate the greenhouse effect and energy depletion. Metal nitrogen (M-N 4 ) macrocyclic complexes have attracted increasing attention in the field of electrocatalytic CO 2 reduction (CO 2 RR) due to the precise adjustment of the catalytic active site according to the requirements and the flexible modification of the external ligand structure. Nevertheless, the poor activity and low selectivity of reduction products restrict their widespread application in electrocatalytic CO 2 RR. Herein, a combination of nanoscale and molecular level method has been developed to construct easily obtainable 4NH 2 -NiPc/NH 2 -CNT hybrid material, in which amino groups are connected to provide electrons toward the central Ni-N 4 site to promote the electrocatalytic CO 2 RR catalytic activity. As a result, the catalyst 4NH 2 -NiPc/NH 2 -CNT mainly produces CO in the electrocatalytic CO 2 RR, which exhibits a Faradaic efficiency of CO (FE CO ) higher than 92 % within a wide overpotential range of −0.70 to −0.95 V vs. RHE, and provides excellent stability with a current density of 12 mA cm −2 at −0.80 V vs. RHE. In addition, 4NH 2 -NiPc/NH 2 -CNT reaches its maximum FE CO value of 96 % at −0.8 V vs. RHE, which is approximately 3.1 times that of the original unmodified NiPc/CNT, demonstrating excellent promotion of electrochemical performance. Similarly, compared to NiPc/CNT without amino modification, the current density of 4NH 2 -NiPc/NH 2 -CNT exceeds it by more than twice. The research results indicate that promoting role of electron substituted amino groups in catalysis dispersion and electronic environment coordination. This study proposes a promising strategy of introducing amino groups into molecular catalysts and hybridizing with carbon nanotube to enhance the electrocatalytic conversion of CO 2 to deep reduction products.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zifan Wu,Yacong Deng,Fengyu Tian,Yidi Wang,Na Fan,Guangzheng Sun,Yichuan Li,Yuan Pan,Bin Liu,Bin Dong,Han Hu,Yongming Chai
During the fermentation of straw to produce bioethanol, enzymatic hydrolysis lignin (EHL) is generated in significant quantities, which retains the original structure of lignin and thus exhibits a great potential for the production of monophenols. Herein, we fabricated a highly dispersed Ni-Co alloy catalyst loaded on N-doped biochar (10Ni-3Co/NAC) by a deposition precipitation method, which could completely convert α-O-4, β-O-4, and 4-O-5 lignin model compounds into monomers under mild conditions. 10Ni-3Co/NAC significantly catalyzed the hydrocracking of EHL in water at 220 °C under 3 MPa of initial hydrogen pressure for 8h, achieving a total monophenol yield of 42.8 wt% and a high 2,6-dimethoxy-4-propylphenol proportion (48.5 %). The study results suggest that 10Ni-3Co/NAC possesses high adsorption and activation capacity for oxygen-containing substrates, and the interspecies electron transfer within Ni-Co alloys in 10Ni-3Co/NAC facilitates the formation of dissociated active hydrogen, which attacks the C-O group in EHL leading in the highly selective cleavage of the C-O bond to produce monophenols.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Ke Lu,Yihao Xu,Hao Yuan,Jianping Liang,Hongli Wang,Jie Zhang,Yinong Li,Dezheng Yang
The design of efficient reaction units and the use of efficient catalysts for green and non-polluting ammonia synthesis is an important and challenging issue. In this paper, we design a high-efficiency reaction device, a coaxial double dielectric barrier discharge plasma reactor, which produces a more uniform plasma discharge during operation, changes the discharge characteristics, promotes the physicochemical reactions of ammonia synthesis, improves the efficiency of ammonia production, and reduces the energy consumption. The use of transition metal Ni and its metal oxide NiO loaded on the carrier as catalysts. The catalyst was comprehensively characterized by X-ray photoelectron spectroscopy, X-ray diffraction, and scanning electron microscope. The reaction mechanism of plasma-catalyzed ammonia synthesis was studied in detail by combining discharge characteristics, optical emission spectroscopy, and catalyst characterization. The reaction conditions and discharge parameters of the dielectric barrier discharge plasma reactor were optimized, which greatly improved the energy efficiency and synthesis rate, which could reach 1002 μmol g −1 h −1 under the optimal conditions. Based on the experimental results, we analyzed how different conditions and parameters affect the reaction of ammonia synthesis.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yang Sun,Fan Yang,Siyuan Sun,Kexin Wei,Ye Wang,Guang Ma,Junpu An,Junwei Yuan,Meitong Zhao,Jiahui Liu,Hongchen Liu,Yongfeng Li
Developing high-performance and low-cost electrodes for hydrogen and oxygen evolution reactions (HER and OER, respectively) represents a pivotal challenge in the field of water electrolysis. Herein, W doped NiFe LDH nanosheets (NiFe-W x /NF) were immobilized on nickel foam (NF) through one-step corrosion engineering, which induced the coexistence of α-Ni(OH) 2 and β-Ni(OH) 2 . The doping of large atomic radius W influenced the growth of crystal planes of Ni(OH) 2 , promoting the formation of α-Ni(OH) 2 , which results in large layer spaces and neatly arranged nanosheets structure. The optimized NiFe-W 0.5 /NF catalyst require potentials of only 69 to attain 10 mA/cm 2 for HER, and require overpotentials of 269 mV to reach 100 mA/cm 2 current density for OER, respectively. The W 6+ with high oxidation state can withdraw neighboring electrons from Ni, altering the adsorption energy of hydrogen intermediates, which improves the Volmer step and electrical conductivity in HER. And the large layer space of α-Ni(OH) 2 in NiFe-W 0.5 /NF can be contributed to accelerating the formation of high valence γ-NiOOH, which can accelerate OER kinetics. In addition, the NiFe-W 0.5 /NF catalyst also provides an overall water splitting activity of 780 mA/cm 2 current density at a cell voltage of only 1.90 V, and remains highly stable for over 70 h at 100 mA/cm 2 , which makes it a bifunctional efficient catalyst for water electrolysis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Tian Meng,Qun Li,Mengxia Yan,Dewen Wang,Libing Fan,Xiaojuan Liu,Zhicai Xing,Xiurong Yang
Self-reconstruction of oxygen evolution reaction (OER) catalyst, especially metal (oxy)hydroxides or oxides, has attracted much attention. Herein, an in-situ self-reconstruction process for Ni, Fe, Zn ternary-metal hydroxides (NFZ-TH) involving significant morphology transformation, and self-modulated electronic structure change of Ni and Fe owing to the etching of Zn species under anodic polarization potential is revealed. NFZ-TH derived materials, undergoing in-situ self-reconstruction (NFZ-TH-SR), exhibits superior OER performance (η = 217 mV @ j = 10 mA cm −2 geometry ) and excellent stability over a period of ~48 h. Nano-pitted surface resulting from etching of Zn species improves the electrochemical surface area. Meanwhile, in NFZ-TH-SR, large amounts of defects induced defect-/corner-sited Fe and adjustability of NiOOH species are verified by Mössbauer spectra and in-situ Raman spectra respectively. Density functional theory calculations give insight that both defect-/corner- sited Fe and Ni at next-nearest-neighbour defect-site have high activity. This paper helps understand that the proposed in-situ self-reconstruction strategy can improve the electrochemical performance of OER catalysts.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）