Journal of Energy Chemistry
·
2025
·
IF 14.9
Jiangtao Yang,Yunzhen Jia,Guang Liu,Dazhong Zhong,Jinping Li,Qiang Zhao
The metallic Ni catalyst suffers from strong binding with the *CO intermediate, resulting in poisoning of the catalyst surface. It is feasible to facilitate the generation of CO by alleviating the binding strength of the *CO intermediate on the Ni metal surface through a lattice expansion strategy. Here, Ni 3 ZnC 0.7 @C with lattice expansion was synthesized by co-doping with Zn and interstitial C through high-temperature pyrolysis. Structural characterization confirms that the lattice of Ni 3 ZnC 0.7 expands by 5.47% compared to Ni due to the co-doping of Zn and interstitial C. The Ni 3 ZnC 0.7 @C possesses excellent catalytic performance with Faradaic efficiency (FE) of CO exceeding 90% over a wide potential range from −0.8 to −1.4 V versus reversible hydrogen electrode (vs. RHE) with a peak FE CO of 96.6% at −1.0 V vs. RHE. In membrane electrode assembly (MEA) testing, Ni 3 ZnC 0.7 @C achieves a FE CO of 81.4% at the industrial-level current density of 400 mA cm −2 . In situ attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) and density functional theory (DFT) calculations reveal that the co-introduction of Zn and interstitial C in the Ni crystal can significantly promote the desorption of *CO intermediate, which facilitates the generation of CO. This study demonstrates a viable way for designing efficient transition metal catalysts for CO 2 electroreduction through lattice strain engineering.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wei Ling,Peng Liao,Jiawei Zhu,Jianxin Wu,Caiwei Hu,Xianke Zhang,Jujun Yuan,Zuzhou Xiong,Xiurong Zhu,Chuicai Rong
Metal–organic framework (MOF) derivatives have emerged as promising candidates for designing lightweight, high-performance electromagnetic wave absorption (EMWA) materials owing to their tunable porosity, compositional diversity, and structural flexibility. In this study, a hybrid material (Nd/Fe-MOF) comprising Nd- and Fe-based MOFs was constructed via ion-exchange engineering based on an MOF-plus-MOF strategy, involving partial exchange between Nd³⁺ and Fe³⁺ ions. The subsequent pyrolysis of Nd/Fe-MOF yielded a particle-decorated bundle-like Nd 2 O 3 /Fe@C nanocomposite, which exhibited an exceptional EMWA performance with a minimum reflection loss (RL min )of −60.13 dB and an effective absorption bandwidth (EAB) of 5.0 GHz at a thin thickness of 1.8 mm. Moreover, Nd 2 O 3 /Fe@C also displayed an enhanced absorption with an EAB of 2.1 GHz (5.2–7.3 GHz) at low-frequency C band. This outstanding EMWA behavior can be attributed to the optimized impedance matching induced by the introduction of Nd 2 O 3 , and the prolonged propagation paths of EMW caused by the bundle-like structure. In order to present the practical application, CST simulation showed that the reduction value of radar cross section (RCS) of Nd 2 O 3 /Fe@C could reach up to 32.6 dB m² compared to the pure perfect electric conductor (PEC) substrate. Therefore, this study demonstrates the feasibility of employing ion-exchange engineering for the optimization of electromagnetic parameters and the subsequent development of high-efficiency rare earth–based absorbers.
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 9
·1-14
·
IF 2.4
Jiang Wenjia,Zhang Pingzhu,Jia Qingqing,Zhang Zhongao,Liu Yaming,Hu Shilin,Ruan Hao,Huang Li,Wu Dong,Zhao Zhi
Hydrophobic catalysts are essential for water-hydrogen exchange reactions to facilitate the separation of hydrogen isotopes. However, existing hydrophobic catalysts are primarily small-sized pelleted forms, which are not suitable for large-scale systems. In contrast, structured catalysts, which offer a low pressure drop and enhanced mass and heat transfer properties, present promising applications. In this work, cake-like nickel foam (NF) was selected as the structural support. Activated carbon was initially loaded onto the NF using silica sol, followed by hydrothermal deposition of NiCo 2 O 4 with a rough morphology, resulting in a carrier with high roughness and a large specific surface area. The carrier attained a superhydrophobic state after modification with heptadecafluorodecyltrimethoxysilane (FD-TMS), achieving a contact angle of 163.8°. The Pt/NiCo 2 O 4 /C/NF superhydrophobic catalyst was subsequently prepared by loading Pt particles via an impregnation-gas phase reduction method. This method exposes the active metal on the surface, enhancing the Pt utilization rate. Furthermore, the extensive surface area of the carrier provided numerous attachment sites for Pt, leading to smaller particle sizes and greater exposure of Pt precursors for reduction to zero-valent Pt. The results indicated that the Pt particle size in the catalyst was 2.31 nm, with 73% of the Pt in the zero-valent form. In water-hydrogen exchange reactions, the total volume mass transfer coefficient Kya for the Pt/NiCo 2 O 4 /C/NF superhydrophobic catalyst reached 17.35 × 10 –2 s –1 , indicating strong catalytic performance. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Xiaoxia Tao,Peng Wang,Run Hou,Huafei Liao,Fenghai Cao,Yajie Fu,Yang Chen,Lizhi Wu,Yu Tang,Li Tan
Supported iron-based catalysts have emerged as promising candidates for alkane dehydrogenation due to their excellent sulfide resistance, cost-effectiveness, and environmental advantages to meet the needs of industrial applications. However, the practical application of iron-based catalysts is hindered by insufficient catalytic activity and rapid deactivation, primarily caused by the reduction/sintering of metastable iron species and concomitant carbon deposition during the reaction. This work systematically investigates the divergent catalytic behaviors of alumina- versus silica-supported Fe catalysts in propane dehydrogenation (PDH). Comprehensive characterizations demonstrate that the surface acidic alumina support establishes strong metal-support interactions (MSI) with electron-rich [Fe 2.4+ O 4 ] domains, effectively enhancing catalytic activity with a propane conversion of 29 % and 80 % propylene selectivity, outperforming silica-supported counterparts. At the same time, the robust active structure of [Fe 2.4+ O 4 ] in the 3Fe/Al 2 O 3 catalyst matches good regeneration capability, enabling suffered from six reaction-regeneration cycles. Moreover, this study indicates that effective propane dehydrogenation requiring synergistic interplay between FeO x speciation and acid sites on the support surface.
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Yingying Zhou,Chenyu Zhu,Haonan Du,Jinlei Wu,Chaoqun Yang,Shanshan Xiao,Wen Zheng,Rui Xin,Yikun Yang,Enyuan Zhen,Zhaowen Ren,Hui Xie
Magneto-carbon composites are promising materials for mitigating electromagnetic pollution due to combined dielectric and magnetic loss mechanisms. However, such absorbers often have unsatisfactory wave-absorbing properties due to the difficulty in matching the magnetic permeability with the dielectric properties. The multilayered hollow carbon cubes anchored to a ternary FeCoNi alloy were fabricated using a self-tempered engineering strategy. The multilayer structures are formed in two steps and have an iron cobalt-nickel alloy core encapsulated in a hollow cubic carbon shell. Initially, a phenolic resin (PR)-coated FeCoNi-Prussian blue analogue (PBA) was prepared, followed by high-temperature vacuum pyrolysis. The inner carbon layer, derived from PBA, exhibits high crystallinity, while the outer PR-derived carbon layer is amorphous, preventing agglomeration of the carbonized FeCoNi alloy particles. The amorphous outer layer enables electromagnetic waves to be better absorbed and consumed within the absorber due to its ability to effectively modulate conductivity and impedance matching. By leveraging heterogeneous interface polarization and modulating electrical conductivity through control of graphite crystallinity, a minimum reflection loss (RL min ) of −74.2 dB and an effective absorption bandwidth (EAB) of 5.8 GHz across the 2–18 GHz range were achieved. The study provides an effective approach to broaden the application prospects of advanced magneto-carbon composite absorbers by using a multilayer structure to achieve a balance between magnetic loss and dielectric properties.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Linyun Zhang,Shanxin Li,Xuzhou Jiang,Hongying Yu,Yijing Sun
Metal organic frameworks (MOFs) have been widely used as microwave absorption (MA) materials owing to their varied structures and large specific surface area. However, it is still challenging to endow MOF derivatives with a rational structure to achieve outstanding microwave absorption. In this work, the hollow Co@C nanorods (HCCN) with lots of winding carbon nanotubes on the surface are obtained based on a template-sacrificing method which employs ZnO nanorods as templates and ZIF67 nanoparticles as ornaments. The HCCNs possess large pore size and specific surface area, efficiently improving the impedance matching . The 1D structure, abundant heterointerfaces and defects trigger strong conduction loss, interfacial and dipole polarization, respectively. Therefore, HCCNs exhibits excellent MA properties: the strong reflection loss of −66.8 dB at the thickness of 2.1 mm and the effective absorption bandwidth of 5.68 GHz at 2.5 mm. Radar cross section (RCS) simulation results have confirmed the practicality of HCCNs. This study proposes an inspiration for the structural designing of MOF materials and derivatives to realize amazing MA performance.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Yang Li,Shouwei Zuo,Qiaohong Li,Huawei Huang,Xin Wu,Jing Zhang,Huabin Zhang,Jian Zhang
Hierarchical structures with a complex interior and a functional exterior are highly advantageous for energy-related electrocatalysis. Herein, a carbon-supported molybdenum carbide/sulfide heterostructure interior is covered with a defect-rich MoS 2 nanosheet exterior. The resulting hierarchical structure (C–MoCS x @MoS 2 ) is a promising nanoreactor for seawater splitting. X-ray absorption spectroscopy demonstrates that MoC and MoS 2 are chemically integrated into the C–MoCS x core, providing abundant C–Mo–S sites for hydrogen evolution. Experimental studies and theoretical calculations show that the defect-rich MoS 2 exterior exhibits a high capability for repelling salt deposition, allowing the penetration of low-saline water into the inner C–MoCS x to accelerate the water-splitting reaction. As expected, the obtained C–MoCS x @MoS 2 is remarkably active and exceptionally stable in natural seawater. This work opens new avenues for developing effective electrocatalysts for seawater splitting and other energy-related applications.
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Zhijiao Huang,Yong Liu,Lungang Chen,Xinghua Zhang,Jianguo Liu,Chenguang Wang,Qi Zhang,Longlong Ma
2,5-dimethylfuran (DMF), a promising biomass-derived fuel, is synthesized via the hydrodeoxygenation of 5-hydroxymethylfurfural (HMF). This study focuses on the inherent activity of a 5Pt5Fe/C catalyst for HMF hydrodeoxygenation to DMF. The catalyst exhibited exceptional performance, achieving a remarkable DMF yield of 99.6 %. It displayed specific selectivity for C = O bond hydrogenation and C O bond cleavage in diverse substrates, producing high yield of 2-methylfuran from furfural and furfury alcohol, and high yield of toluene from benzaldehyde, benzyl alcohol. In-depth characterizations unveiled valuable insights into the 5Pt5Fe/C catalyst's properties, emphasizing a harmonious balance between metal and acid sites due to the interactive synergy between Pt and Fe species, enhancing hydrodeoxygenation activity. Additionally, the catalyst demonstrated satisfactory stability, maintaining a commendable DMF yield over five reaction cycles despite observed changes.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2025
·
IF 7.9
Zhijie Zhu,Meiling Yu,Qizheng Dong,Lin Zhao,Hongkang Wei,Peng Wang,Didi Cao,Zhiyang Lv,Xunyan Tan,Jian Gu,Yinsheng Li,Zhipeng Xie,Chang-an Wang
In this work, the (ZrHfNbTaCr)C high-entropy precursors were synthesized via a novel metal–organic-gel (MOG) strategy using pyromellitic acid as dual-functional carbon source and chelating agent, with transition metal chlorides (ZrCl 4 , HfCl 4 , NbCl 5 , TaCl 5 , CrCl 3 ) serving as metal source. The as-synthesized precursors were converted successfully into single-phase nanoparticles featuring regular morphology, average particle size of only about 40 nm and uniform elemental distribution by pyrolysis in vacuum at 1300 ℃. Through spark plasma sintering at 1950 ℃ for 1 h under 40 MPa pressure, the as-prepared nanoparticles were consolidated into dense ceramics achieving relative density of 99.3 %, while maintaining submicrometer-scale grain size of 0.48 ± 0.2 μm. The resultant ceramics exhibited enhanced mechanical properties, demonstrating the Vickers hardness of 22.3 ± 0.5 GPa coupled with the fracture toughness of 4.1 ± 0.1 MPa·m 1/2 . The process provide potential for the research and application of high-entropy carbide ceramics and composites.
✓ 已验证
产品关联
DOI
高影响因子
ARCHIVES OF PHARMACAL RESEARCH
·
2024
·
IF 6.9
Hu Wenjie,Wang Yujie,Yang Huiling,Zhang Leiming,Liu Bo,Ji Yunxia,Song Xiaodong,Lv Changjun,Zhang Songzi
Pulmonary fibrosis is a chronic and irreversible progressive lung disease caused by various factors, such as age and environmental pollution. With countries stepping into an aging society and the seriousness of environmental pollution caused by global industrialization, the incidence of pulmonary fibrosis is annually increasing. However, no effective drug is available for pulmonary fibrosis treatment. C-phycocyanin (C-PC), extracted from blue-green algae, has good water solubility and antioxidation. This study elucidated that C-PC reinforces autophagy to block pulmonary fibrogenesis by inhibiting long noncoding RNA (lncRNA) biogenesis in vivo and in vitro. Cleavage under targets and release using nuclease (CUT & RUN)-PCR, co-immunoprecipitation (Co-IP), and nuclear–cytoplasmic separation experiments clarified that C-PC blocked the nuclear translocation of activating transcription factor 3 (ATF3) to prevent the binding between ATF3 and transcription factor Smad3, thereby hindering lncIAPF transcription. Human antigen R (HuR) truncation experiment and RNA binding protein immunoprecipitation (RIP) were then performed to identify the binding domain with lncIAPF in the 244–322 aa of HuR. lncIAPF exerted its profibrogenic function through the binding protein HuR, a negative regulator of autophagy. In summary, C-PC promoted autophagy via down-regulating the lncIAPF–HuR-mediated signal pathway to alleviate pulmonary fibrosis, showing its potential as a drug for treating pulmonary fibrosis. Exploring how C-PC interacts with biological molecules will help us understand the mechanism of this drug and provide valuable target genes to design new drugs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CELLULAR AND MOLECULAR MEDICINE
·
2024
·
IF 4.3
Xiaoyang Zhou,Kai Lian,Junjie Jia,Xue Zhao,Peng Duan,Jiaolong Huang,Yihua Shi
Epimedium is thought to enhance the integrity of tendons and bones, ease joint discomfort and rigidity and enhance kidney function. Although glucocorticoids are commonly used in clinical practice, the mechanism by which the active compound Epimedin C (EC) alleviates glucocorticoid‐induced osteoporosis (GIOP) is not well understood. The therapeutic potential of EC in treating GIOP was evaluated using alizarin red S staining, calcein immersion and fluorescence imaging, and bone mineralization, bone mass accumulation and bone density in zebrafish larvae were determined. Using the Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, the key signalling pathways related to bone development were identified. A protein–protein interaction network (PPIN) was constructed to identify osteoclast characteristic genes and the findings were verified using real‐time quantitative PCR (RT‐qPCR). The bone tissue damage caused by prednisolone was reduced by EC. It also altered physiological processes, improved bone density, boosted mineralization and increased bone mass and activity. Subsequent empirical investigations showed that EC impacted the major signalling pathways involved in bone development, such as osteoclast differentiation, oestrogen, MAPK, insulin resistance, PPAR and AMPK signalling pathways. It also decreased the expression of genes typical of osteoclasts. The results of our study uncover a previously unknown function of EC in controlling bone formation and emphasize the potential of EC as a therapeutic target. The osteoprotective effect of EC indicates its potential as a cost‐effective strategy for treating GIOP.
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shengyuan Chen,Kailei Lu,Xiaolan Zhou,Zehua Zhouchen,Xu Huang,Jianqi Qi,Tiecheng Lu
In this work, a simple, safe, and low-cost two-step route for preparing spherical AlN powders was developed. Specifically, pure AlN spherical powder can be obtained by using water as the solvent, ammonium polyacrylate as the dispersant, carbon powder and alumina powder as the raw materials, spraying and granulating into a spherical precursor, and then sintering at high temperature under a nitrogen atmosphere. The results demonstrate that the average size and the associated distribution of the precursor can be adjusted by regulating the solid or dispersant content of the slurry, which is beneficial for governing the size of the AlN powder. The average particle size of the sintered spherical AlN powders is approximately 33.5 μm, presenting high sphericity (greater than 0.9) and excellent flowability. This approach developed for preparing spherical AlN powder is of great significance for promoting the widespread application of AlN powder in the field of high-performance fillers.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）