ADVANCED ENGINEERING MATERIALS
·
2020
·Vol. 22
·期 11
·2000402
·
IF 3.217
Yanpeng Xue,Shuqiang Wang,Yanyan Xue,Lili Cao,Mengyan Nie,Ying Jin
Until now, superhydrophobic materials that are scale-up fabrication and application to harsh environments remain challenging because of their fragile mechanical durability. Because of their unique electronic structure, rare-earth oxides (REOs) have been proven to be intrinsically hydrophobic. Herein, cerium oxide particles (CeO 2 ) are added to the coating by coelectrodeposition. The Co–Ni/CeO 2 composite coating from the electrolyte containing 3.44 g L −1 possesses a flower-like hierarchical structure, displaying a superhydrophobic behavior after the modification by 1H,1H,2H,2H-perfluorooctyltrichlorosilane (PFTEOS). More importantly, excellent mechanical durability with critical abrasion distance of 22.5 m is achieved under a 5 kPa fixed normal pressure in the liner abrasion test before the loss of superhydrophobicity. Also, electrochemical measurements demonstrate that the superhydrophobic composite coatings display high corrosion resistance.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 7
·1-9
·
IF 2.8
Li Wei,Dai Bo,Li Zhao,Yang Hongwei,Liu Guixiang,Xu Fang
A series of Ni x Zn 1− x Fe 2 O 4 ( NiZn, x = 0.15, 0.25, 0.35, 0.45, 0.65, 0.7, 0.8, 0.85) ferrites were prepared via a solid-phase sintering method. The microstructure, phase, and gyromagnetic properties of the NiZn samples were studied in depth. It was found that the lattice constants, density, and hardness of the samples gradually decreased with increasing Ni 2+ content. X-ray diffraction confirmed that all of the samples were in the spinel phase. Scanning electron microscopy indicated that the grain sizes were more uniformly distributed when x = 0.65. Raman analysis showed that the variation of Ni 2+ content affected the occupancy distribution of ferrite ions. The results indicated that Zn 2+ mainly occupied the A-site and that Ni 2+ mainly occupied the B-site. The coercivity ( H c ) of NiZn increased with increasing Ni 2+ content. Meanwhile, the saturation magnetization ( M s ) initially increased and then decreased. When x = 0.65, the total molecular magnetic moment started decreasing because of the decrease in the net A-site magnetic moment. The sample that had a composition of Ni 0.65 Zn 0.35 Fe 2 O 4 had the highest M s intensity with a value of 78.68 emu/g and a maximum value of 4 πM s = 4780 Gs.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 18
·14235-14245
·
IF 4.6
Tong Su,Daguo Wu,Xinghua Zhang,Qi Zhang,Lungang Chen,Xiuzheng Zhuang,Longlong Ma
Biomass is an important renewable resource in nature, and cellulose is a crucial component within it. The chemically directed conversion of cellulose into ethylene glycol offers a green alternative to traditional petroleum-based production methods. In this study, a multifunctional Ni–WOx/SAPO-11 catalyst was designed. By optimizing the processing parameters of catalysts and the reaction conditions of them, it was demonstrated that this catalyst could efficiently catalyze cellulose into alcohol products through a series of tandem reactions such as hydrolysis, retro-aldol condensation, and hydrogenation under relatively mild conditions. The yield of ethylene glycol climbed from 4% (at 180 °C) to 66.6% (at 240 °C) with the increase of reaction temperature. Characterization (XPS, TEM, TPD/TPR) revealed that a reduction temperature of 500 °C maximized Brønsted acidity and W5+/W6+ ratios, enhancing C–C cleavage efficiency. Further increases in the reduction temperature would weaken the Brønsted acid on the surface of SAPO-11, but its surface area would also increase (mainly in the form of mesopores). The uniformly dispersed elemental tungsten could form new acidic sites on the catalyst surface; in combination with active Ni0, this high-temperature reduced catalyst could achieve the direct hydrogenolysis of cellulose to produce ethylene glycol, benefiting the efficient utilization of lignocellulosic biomass in the future.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2025
·
IF 3
Qi Li,Zhangqiao Zhou,Yan Nie,Lu Yang,Yu Wang,Jinsong Chen,Xian Wang
The preparation of soft magnetic composites requires effective surface modification of alloy powder to enhance insulating properties and achieve dense, uniform coating layers. Firstly, the gas-atomized Fe-Ni-Mo powder was surface modified using the atomic layer deposition method, forming a uniform and dense Al 2 O 3 insulating layer. The secondary surface modification of organic polymers further improves the properties of soft magnetic composites. This study systematically evaluates the effects of the primary and secondary surface modification on the properties of powder particles and soft magnetic composites. The primary modification generates an extremely thin insulating layer of approximately 2.5 nm, which increases the particle resistivity by 9 orders of magnitude. The permeability frequency stability of the soft magnetic composites increased from 11.3 % to 96.5 %, resulting in significant core loss reduction. The secondary modification effectively enhances the formability of soft magnetic composites. Optimal permeability of 242.7 at 1 kHz is achieved, maintaining 95.2 % frequency stability up to 1 MHz, while core loss remains below 570 mW cm −3 under 100 kHz/100 mT conditions. The surface treatment method in this work can provide a reference for the surface insulation modification of soft magnetic composites.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Weili Sun,Qingqing Zhang,Xiao-Guang Sun,Cheng Li,Yongsheng Huang,Wenyu Mu,Junbin Tan,Jianlin Li,Kai Liu,Shijian Zheng,Sheng Dai
Nickel-rich (Ni ≥ 90%) layered oxides materials have emerged as a promising candidate for next-generation high-energy-density lithium-ion batteries (LIBs). However, their widespread application is hindered by structural fatigue and lattice oxygen loss. In this work, an epitaxial surface rock-salt nanolayer is successfully developed on the LiNi 0.9 Co 0.1 O 2 sub-surface via heteroatom anchoring utilizing high-valence element molybdenum modification. This in-situ formed conformal buffer phase with a thickness of 1.2 nm effectively suppresses the continuous interphase side-reactions, and thus maintains the excellent structure integrity at high voltage. Furthermore, theoretical calculations indicate that the lattice oxygen reversibility in the anion framework of the optimized sample is obviously enhanced due to the higher content of O 2 p states near the Fermi level than that of the pristine one. Meanwhile, the stronger Mo–O bond further reduces cell volume alteration, which improves the bulk structure stability of modified materials. Besides, the detailed charge compensation mechanism suggests that the average oxidation state of Ni is reduced, which induces more active Li + participating in the redox reactions, boosting the cell energy density. As a result, the uniquely designed cathode materials exhibit an extraordinary discharge capacity of 245.4 mAh g −1 at 0.1 C, remarkable rate performance of 169.3 mAh g −1 at 10 C at 4.5 V, and a high capacity retention of 70.5% after 1000 cycles in full cells at a high cut-off voltage of 4.4 V. This strategy provides an valuable insight into constructing distinctive heterostructure on high-performance Ni-rich layered cathodes for LIBs.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Kang Wei,Jun Li,Xiao Sun,Meng Shao,Jianguo Tang,Soowohn Lee
rGO/Ni(OH) 2 /Ni 3 S 2 composite electrode materials were successfully synthesized on Ni foam (NF) by a two-step hydrothermal process and subsequent alkalization treatment. To investigate the influence of reaction time in the secondary hydrothermal process, three different hydrothermal times (4 h, 6 h, 8 h) were set. The results showed that the electrode had the highest specific capacitance of 2260 F·g −1 at 1 A·g −1 at the hydrothermal reaction time of 6 h, (4 h: 1807.8 F·g −1 , 8 h: 1358.3 F·g −1 ). In addition, it exhibited prominent rating capability and cycling stability, with 41.7% retention at 10 A·g −1 and 137.9% retention after 5000 cycles at 50 mV⋅s −1 . Finally, the assembled hybrid supercapacitor (HSC) with rGO/Ni(OH) 2 /Ni 3 S 2 /NF (6 h) and active carbon displayed outstanding electrochemical performance. When the power density was 400.5 W⋅kg −1 , it showed the energy density (25.2 Wh⋅kg −1 ), proving its potential as electrode materials for HSC devices.
✓ 已验证
产品关联
DOI
高影响因子
POWDER TECHNOLOGY
·
2024
·
IF 4.5
Yuxiao Xue,Deqing Zhu,Jian Pan,Gen Li,Xuewei Lv
In this paper, two types of Ni-Cr bearing composite burdens including SP1 (79% Ni-bearing sinter and 21% Cr-bearing oxide pellets) and SP2 (84% Ni-bearing sinter and 16% Cr-bearing pre-reduced pellets) were used for the more efficient preparation of high-Cr ferronickel . Based on the metallurgical performance characterization, thermodynamic analysis and smelting parameters optimization, the qualified high-Cr ferronickel were prepared by the utilization of the Ni-Cr bearing composite burdens. The recovery rates of iron, chromium and nickel exceed 95%, 90% and 98% whereas their grades are 85.56–85.88%, 7.82–8.02% and 1.59–1.62%, respectively. Compared with SP1, SP2 possesses lower smelting duration, which indicates the appropriate proportioning of Cr-bearing pre-reduced pellets is beneficial for the smelting process. The obtained high-Cr ferronickel consisting of (Fe, Cr) 3 C and (Fe, Cr) 7 C 3 can be used as a low-cost substitute for the conventional raw materials of 200 or 300 series of stainless steel .
✓ 已验证
DOI
高影响因子
Metals
·
2024
·Vol. 14
·期 9
·1047
·
IF 2.6
Jianguo Liu,Songlin Tong,Shuaihua Wang,Zhiyao Wan,Xiao Xing,Gan Cui
Superamphiphobic coatings have shown great potential in many fields such as with their anti-corrosion, high-temperature resistance, self-cleaning, and drag reduction properties. However, due to the poor stability of their coatings, it is difficult to apply them on a large scale. In this paper, two kinds of SiO2particles and nickel were co-deposited on the surface of steel to construct a micro/nano dual-scale structure by composite electrodeposition. The surface of the coating was then fluorinated with the low-surface-energy material 1H,1H,2H,2H-Perfluorodecyltriethoxysilane (AC-FAS) to prepare a Ni-SiO2superamphiphobic coating. The coating has a water contact angle of 159° and an oil contact angle of 151°. The effect of nanoparticle concentration on the wettability and surface morphology of the coating was systematically studied. Comparative experiments revealed that the optimal micro/nanoparticle concentrations were 8 g/L of 20 nm SiO2and 2 g/L of 1 μm SiO2. This preparation method greatly improves the corrosion resistance, wear resistance, chemical stability, and high-temperature resistance of the coating.
✓ 已验证
DOI
高影响因子
Surfaces
·
2025
·Vol. 8
·期 3
·60
·
IF 2.9
Yanying Zhu,Yanxiang Wang,Jianwei Zhang,Jinghe Guo,Yingfan Li,Siao Xin,Ziyi Xu,Yanru Yuan,Dong Zhang
Surface modification of carbon fibers (CFs) is a critical step in preparing carbon fiber-reinforced composites. This study developed a continuous experimental process that integrates electrochemical anodic oxidation and chemical vapor deposition to fabricate carbon nanotubes/carbon fiber (CNTs/CF) reinforcements. The effects of temperature and hydrogen flow rate during CNT growth on the resulting reinforcements were systematically investigated. The surface morphology and mechanical properties of the modified materials were characterized using scanning electron microscopy, Raman spectroscopy, and single-fiber tensile testing. Employing an Fe0.5Ni0.5bimetallic catalyst under optimized conditions (550 °C, H2flow rate: 0.45 mol/min, C2H2flow rate: 0.30 mol/min), the resulting reinforcement exhibited an 8.7% increase in tensile strength compared to as-received CF.
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Lixia Li,Zhechao Huang,Menghao Jiang,Jinxing Long
A novel approach is proposed for producing 4-ethylcyclohexanol, a versatile petrochemical in the polymer industry, from the renewable lignin in the presence of Cu–Ni/MgCrO x spinel catalysts. Under the synergistic effect between the Ni 0 , Cu, + and the balanced acidic and basic properties of MgO and MgCr 2 O 4 , an exceptional yield of monomer (30.1 wt%) with 59.5% selectivity of 4-ethylcyclohexanol (yield of 17.9 wt%) was achieved when the depolymerization of bamboo lignin was performed with Cu 6 Ni 20 /MgCr 0.5 O x (Cr:Mg = 0.5). Catalyst characterization illustrated that the formation of MgCr 2 O 4 spinel, which restrained the generation of NiMgO 2 solid solution and increased the concentration of Ni 0 species, along with the surface electron effect between Ni 0 and Cu + , contributes to this superior hydrodeoxygenation performance of lignin. Mechanistic investigation further demonstrated that the conversion of lignin to 4-ethylcyclohexanol involves a tandem process of C β –O bonds cleavage, demethoxylation, and saturated hydrogenation. Therefore, this work provides new insights on lignin utilization.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Bei-Bei Zhang,Ping Liu,Hao-Ran Wang,Yan-Yang Li,Lin Zhang,Qing-Chao Liu,Zhong-Jun Li,Hong-Chang Yao
Developing efficient photocatalysts for solar-driven overall water vapor splitting is crucial for sustainable hydrogen production. However, current photocatalytic efficiencies are limited by inadequate hygroscopicity, sluggish proton transport, and rapid recombination of photogenerated electron-hole pairs. Here, we report the successful synthesis of an amorphous Ni(OH) 2 /Ni 2 B heterojunction material with a core–shell structure by regulating the reducing environment during the formation of nickel boride. This material exhibits highly efficient overall water vapor splitting performance without any cocatalysts. Under simulated solar irradiation, the optimized sample achieves a hydrogen production rate of 976 μmol·g −1 ·h −1 , with near-stoichiometric evolution of hydrogen and oxygen, an apparent quantum yield of 5.4 %, and a solar-to-hydrogen conversion efficiency of 3.8 %. The enhanced performance is attributed to the unique amorphous/amorphous heterojunction structure that promotes effective charge separation, the abundant surface hydroxyl groups that improve proton transport and hygroscopicity, and the formation of photo-induced frustrated Lewis pairs (FLPs). Our findings shed light on the critical role of amorphous structures and surface chemistry in boosting photocatalytic activity, paving the way for the rational design of advanced photocatalysts for overall water vapor splitting.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Ying Zhang,Yuxuan Chen,Tong Zheng,Juan Mu,Zhengwang Zhu,Haifeng Zhang,Yandong Wang
Ammonia borane (AB) has drawn extensive attention in hydrogen production research due to its excellent hydrogen-storage properties. To address the challenges of agglomeration and difficult recovery associated with nanocatalysts, a series of macroscopic five-component, non-noble metal catalysts were fabricated via rapid solidification. With increasing Ni content, the catalyst transforms from a biphase structure with Mn solid-solution distributed on the face-centered cubic (FCC) matrix to a single-phase FCC structure. The distribution of the Mn element undergoes the following changes: solid-solution phase → grain-boundary segregation → uniform distribution. The catalytic activity shows a parabolic trend with the microstructural evolution of the catalyst. Among them, the Ni13.5 alloy exhibits the highest catalytic activity and excellent cycling stability, achieving a catalytic rate of 1292 mL–1·min–1·m–2 under standard conditions. Also, the activation energy is 15.13 kJ mol–1, which is lower than many nickel-based catalysts. The excellent catalytic performance of Ni13.5 can be attributed to two aspects. First, Mn segregation at grain boundaries accelerates etching, exposing numerous catalytically active Ni elements on the surface. Second, the electron enrichment around Ni enhances the catalytic activity. This study provides valuable insights for the design and development of macroscopic scale catalysts in hydrogen-related catalysis.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）