CATALYSIS COMMUNICATIONS
·
2018
·
IF 3.463
Wenhui Feng,Yuanyuan Ma,Libo Niu,Huiling Zhang,Guoyi Bai
How to control the size distribution and morphology of amorphous alloy is of vital importance in improving their catalytic performance. In this work, uniform and ultrafine NiB amorphous alloy catalysts were prepared by using a hydrogelator, 2,4-(3,4-dichlorobenzylidene)- d -sorbitol, as growth controller as well as PEG800 and tannin for co-additives, which exhibit excellent performance toward the selective hydrogenation of cinnamic acid into hydrocinnamic acid. TEM images indicated the addition of PEG800 and tannin affected the self-assembly of gelator from large aggregates into small assemblies and then affected the morphology of NiB catalysts, leading to enhancement of catalytic activity and stability.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Jiehong He,Pin Lyu,Bo Jiang,Shaoshuai Chang,Haoran Du,Jian Zhu,Hexing Li
Photocatalytic CO 2 hydrogenation into fuels and value-added chemicals is considered as a promising strategy for CO 2 conversion and utilization. However, the photocatalysts used usually displays low efficiency and poor durability. Herein we developed a novel catalyst by combining NiB amorphous alloy with In 2 O 3 semiconductor, which exhibited very high HCOOH yield (5158.0 umol g −1 h −1 ) in CO 2 hydrogenation under sunlight irradiation. The In 2 O 3 acted as a photocatalyst for generating photoelectrons to reduce CO 2 and provided sufficient surface hydroxyl (In−OH) groups favouring CO 2 adsorption during the reaction. The high dispersion of NiB nanoparticles (co-catalyst) and interaction with In 2 O 3 provided the rich interface between NiB and In 2 O 3 , favoring the surface reactions between CO 2 and H 2 . Meanwhile, the unique amorphous alloy structure made the Ni electron-enriched, which promoted CO 2 hydrogenation through the H 2 dissociation. More importantly, the NiB amorphous alloy with good electric conductivity facilitated the transfer of photoelectrons from In 2 O 3 , which sufficiently diminished the photoelectron-hole recombination, leading to the enhanced quantum efficiency in photocatalytic CO 2 hydrogenation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2023
·Vol. 15
·期 13
·6321-6332
·
IF 6.7
Huimin Wang,Tao Feng,Lincai Wang,Weiju Hao
Development of economical, efficient and durable non-noble metal electrocatalysts for the hydrogen/oxygen evolution reaction (HER/OER) holds great promise, but still faces great challenges. Herein, a strategy of doping metal borides with rare earth metal oxides and introducing silicon carbide (SiC) quantum dots has been explored to develop efficient bifunctional electrocatalysts. A novel electrocatalyst consists of SiC quantum dot-decorated CeOx–NiB supported on nickel foam via a one-step mild electroless plating reaction (denoted as CeOx–NiB/SiC@NF). Notably, the modulated electron density of the CeOx–NiB/SiC@NF electrode significantly boosts the electrochemically active surface area and electron transfer, and optimizes the hydrogen/water absorption free energy, which delivers current densities of 50 mA cm−2 and 10 mA cm−2 at overpotentials of only 131 mV and 234 mV for the HER and the OER, respectively. The target electrode requires only 1.43 V to provide 10 mA cm−2 for overall water splitting in 1.0 M KOH. Moreover, the electrode also exhibits good stability and durability at the industrial-grade current density (0.5–1 A cm−2). This work provides a new idea for the development of efficient and durable non-precious metal catalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 18
·8927-8933
·
IF 11.301
Kai Deng,Tianlun Ren,You Xu,Songliang Liu,Zechuan Dai,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
Engineering the composition and structure of hybrid electrocatalysts based on precious Pt and non-precious metals is of paramount importance for increasing the utilization efficiency of Pt and enhancing their electrocatalytic performance. Here we report the construction of novel crystalline PtPd @ amorphous NiB core–shell heterostructures (c-PtPd@a-NiB CSHs) with crystalline PtPd mesoporous truncated octahedral nanocages (c-PtPd MTONs) as the cores and amorphous NiB (a-NiB) nanosheets as the shells via a three-step strategy. This hybridization, between c-PtPd MTONs and a-NiB nanosheets, leads to increased catalytically active sites, a modulated surface electronic structure, and enhanced hydrophilic properties. With these properties, the as-obtained c-PtPd@a-NiB CSHs exhibit enhanced electrocatalytic activity toward the hydrogen evolution reaction (HER) in an alkaline medium, with a small required overpotential of 31 mV (@-10 mA cm−2), a low Tafel slope of 40.9 mV dec−1, and excellent long-term catalytic durability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Zeshuang Kong,Dong Zhang,Jixian Dong,Jiahui Yu,Dafeng Zhang,Junchang Liu,Peiqing Cai,Xipeng Pu
Within the theoretical framework of computational prediction, this study introduces a novel tetrapodal Cd 0.9 Zn 0.1 S/NiB (CZS/NiB) Schottky heterojunction material, which demonstrates exceptional photothermal effects and remarkable photocatalytic properties. Notably, under visible light irradiation for 3 h, the photocatalytic hydrogen evolution activity of CZS/NiB-3 % surpasses that of pure CZS by a factor of 10.52. This outstanding photocatalytic hydrogen production performance stems from the successful construction of the CZS/NiB-3 % Schottky heterojunction with promoted the separation and transfer of photogenerated charge carriers and excellent photothermal effect. Additionally, the synthesized CZS/NiB exhibits high photostability and cycling stability. The favorable photothermal effect of the synthesized photocatalyst was experimentally validated through infrared thermography technology. Through in-depth computational investigations using density functional theory, the pathways of charge transfer in the Schottky heterojunction are validated. This study provides a feasible strategy for research on photocatalytic water splitting for hydrogen evolution.
研究领域:
材料科学
·
能源化学
·
计算化学
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2018
·Vol. 44
·期 12
·7861-7872
·
IF 1.674
Ma Yuanyuan,Dong Jie,Yang Xiaowei,Niu Libo,Zhang Huiling,Bai Guoyi
A series of NiB- x ( x denotes as the molar ratio of hydrogelator:Ni) amorphous alloys were prepared using a hydrogelator, 2,4-(3,4-dichlorobenzylidene)- d -sorbitol (DCBS), as the controlling agent and were tested in the selective hydrogenation of benzophenone to benzhydrol. The effect of different amounts of DCBS addition on the activity of the NiB amorphous alloys was investigated. The addition of small amounts of DCBS during NiB preparation could markedly improve its activity. The conversion of benzophenone was 96.6% and the yield of benzhydrol can reach 82.0% under the optimal reaction conditions over the NiB-0.015 catalyst. The high activity of NiB catalysts is attributed to the regulation effect of three-dimensional networks formed by DCBS, which could inhibit the agglomeration of NiB particles during preparation and make them more dispersed, resulting in larger surface areas and more active Ni sites. The Brunauer–Emmett–Teller method, transmission electron microscopy, H 2 -chemisorption and temperature-programmed desorption of hydrogen measurements indicated these results.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Shengqi Lin,Hailong Huang,Jieyi Fan,Chunhe Li,Kuankuan Ren,Weidong Dou
Photocatalytic conversion of biomass-derived compounds into value-added chemicals coupled with hydrogen production presents a promising strategy to address energy and environmental challenges. In this study, a series of NiB/ZnIn2S4 nanocomposites were synthesized via a facile two-step hydrothermal approach. The designed system enables the simultaneous utilization of photoexcited electrons and holes in redox reactions, achieving efficient benzyl alcohol oxidation and hydrogen evolution. The optimized 3%-NiB/ZnIn2S4 nanocomposite demonstrates exceptional photocatalytic performance, exhibiting a hydrogen evolution rate of 7223.2 μmol g–1 h–1 in 1.50 vol % benzyl alcohol solution, representing 2889.3-fold and 4.8-fold enhancements over pristine NiB and ZnIn2S4, respectively. Furthermore, the system maintains robust stability over 14 photocatalytic cycles, achieving 71.7% conversion efficiency and 86.8% selectivity toward benzaldehyde production. The enhanced performance originates from the formation of Z-scheme heterojunctions between NiB and ZnIn2S4, which facilitates efficient charge carrier separation and transport, as evidenced by improved photocurrent response and reduced electrochemical impedance. This work provides valuable insights into the photocatalytic valorization of biomass-derived platform chemicals under visible light irradiation.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Longqian Wang,Pan Wang,Shuangqing Li,Huishan Shang,Dan Wang,Yafei Zhao,Bing Zhang
Designing transition metal-based heterointerfaces and creating defects are identified as prospective strategies for substituting the expensive noble metal-based catalysts for realizing efficient water electrocatalysis to alleviate the energy and environmental crisis. Herein, pleated sheet-like NiP 3 -NiB-FeB heterostructure nanoarrays with three-phase heterojunctions and luxuriant defects were developed and grown in-situ on carbon cloth as effective self-supported bifunctional electrocatalysts for water-splitting by a facile one-step solution titration method. As expected, the Ni 3 P-NiB-FeB reveals remarkable electrocatalytic performance, requiring only 134 mV and 275 mV overpotentials to achieve the current density of 10 mA cm −2 for HER and 100 mA cm −2 for OER, respectively, whose performance exceeds most transition metal-based catalysts in previous reports. More encouragingly, the electrolyzer with Ni 3 P-NiB-FeB as a working electrode can attain a current density of 10 mA cm −2 at a low voltage of 1.63 V accompanied by a long cycle stability of at least 36 h. The large specific surface area, abundant heterogeneous phase interfaces, and rich defective sites jointly contribute to the exposure of more active sites, regulation of the regional electron density, and promotion of the electrical conductivity, while the introduction of electronegativity P and electron-deficient B also impart Ni 3 P-NiB-FeB with strong electronic interactions and fast charge transfer, thus endowing Ni 3 P-NiB-FeB with excellent catalytic activity. This work opens up new opportunities in multi-phase heterointerfaces and defects engineering of transition metal-based borides and phosphides as efficient multifunctional electrocatalysts for practical water splitting.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Jinxue Song,Yi He,Bo Liu,Ruxia Song,Zhifei Zhang,Hongjie Li,Huilian Zhou,Zhiyuan Li,Xinyu Cheng,Jiamin Zhong,Liping Yan
This study developed a novel Ni B/Ca-CNFs/MWCNTs/h-BN coating on N80 steel. The disadvantages of hexagonal boron nitride (h-BN) were improved by creatively combining multi-walled carbon nanotubes (MWCNTs), cellulose nanofibers (CNFs), and calcium ion cross-linking strategies. This led to the creation of Ca-CNFs/MWCNTs/h-BN hybrids, which were then doped into Ni B coatings by varying pulse current densities. The results demonstrated that the surface morphology , mechanical properties, and toughness of the composite coating are all influenced by the Ca-CNFs/MWCNTs/h-BN doped at various current densities. Meanwhile, the Ni B/Ca-CNFs/MWCNTs/h-BN (4 A/dm 2 ) coating has the greatest microhardness (902.42 Hv) and the smallest friction coefficient (0.487) under reciprocating dry sliding friction conditions of Si 3 N 4 friction balls. In addition, the results of nanoindentation and tensile tests show that the elastic modulus of Ni B/Ca-CNFs/MWCNTs/h-BN (4 A/dm 2 ) composite coating is 194.096 MPa and the tensile elongation is 12.2 %.
研究领域:
材料科学
·
表面工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
·
2017
·Vol. 35
·期 7
·1149-1156
·
IF 1.852
Xuejia Gao,Libo Niu,Xianliang Qiao,Wenhui Feng,Yingying Cao,Guoyi Bai
A novel NiB deposited layered double hydroxide (LDH) coated ferroferric oxide (Fe 3 O 4 @LDH@NiB) magnetic core-shell nanocomposite was successfully fabricated by the combination of coprecipitation and impregnation-reduction. During the Fe 3 O 4 @LDH preparation, a facile template-free approach was employed to introduce the LDH shell, which was more efficient than the conventional method for the preparation of mesoporous materials that always needs to introduce and remove templates. The resulted Fe 3 O 4 @LDH has a relatively high surface area and abundant surface hydroxyl group, which can adsorb metal ions, making it favorable to disperse and stabilize the active Ni species, as demonstraed by TEM, XPS, FT-IR and BET characterizations. Therefore, it exhibited good activity in the selective hydrogenation of cinnamic acid to hydrocinnamic acid with the conversion and selectivity both approaching to 100%. Notably, the obtained Fe 3 O 4 @LDH@NiB can be easily separated by an external magnetic field and recycled eleven times without appreciable loss of its initial catalytic activity.
研究领域:
材料化学
·
纳米催化
·
绿色化学
·
应用化学
·
功能材料
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yike Guo,Song Yang,Pengwei Ren,Hao Liu,Xuemei Miao,Zhenjiang Wu,Yantong Lv,Ju ShangGuan,Yadong Bai
Friction and wear of pen nib steel in neutral ink systems is responsible for writing performance and service life. A water-based composite nanoparticle lubricant, (oleic acid-3-aminopropyltriethoxysilane-hyaluronic acid-titanium dioxide), named RNTH, was designed via a nuclear chain crosslinking method featured by shear-induced self-healing mechanisms in hydrogels. In comparison with traditional polyol lubricants, RNTH reduced the coefficient of friction by 17 %, wear mass loss by 28.3 %, and wear depth by 3–5 μm. Meanwhile, RNTH forms a dynamic lubrication layer at the friction interface, where the solid phase provides mechanical support and the liquid phase enables self-healing through hydrogen bond hydration, ensuring stable long-term lubrication. Importantly, this study introduces a biomimetic self-healing strategy to improve the durability of water-based lubricants under dynamic friction, offering new insights for designing high-precision liquid lubrication systems in industrial applications.
研究领域:
材料科学
·
机械工程
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yu Wu,Modeste Venin Mendieev Nitou,Ziheng Zhang,Daiqian Chen,Hesheng Yu,Yuanfu Chen
Lithium metal batteries (LMBs) offer great promise for next-generation high-energy density storage devices, yet their practical applications seriously hindered by dendritic lithium growth and unstable solid electrolyte interphase (SEI). To address these challenges, herein, we present a novel lithiophilic nickel boride embedded hollow carbon nanorods (NiB@HCR) as multifunctional interlayer for LMBs. The uniform distribution of lithiophilic NiB@HCR creates plentiful chemisorption sites, enabling efficient Li + flux regulation and uniform deposition. It also facilitates the in-situ formation of stable LiF-rich SEI layer, which effectively suppressing dendrite growth. The lithiophilic feature and strengthened physical barrier can also enhance the electrolyte wettability and mechanical/thermal stability. Benefiting from these merits, the cells with NiB@HCR interlayers deliver outstanding electrochemical performances: the Li//Li cell delivers outstanding stability at 1 mA cm −2 with 1 mAh cm −2 over 1000 h; the Li//LiFePO 4 cell with a 11 mg cm −2 delivers a high reversible capacity of 111.7 mAh g −1 at 1C over 200 cycles. This work contributes to providing new insight into the deliberate design, facile fabrication, and performance enhancement mechanisms of lithiophilic boride-based multifunctional interlayer for dendrite-free and stable LMBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
界面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）