INORGANIC CHEMISTRY
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2022
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IF 5.436
Yimeng Zhou,Qianjin Ye,Xiangli Shi,Qiong Zhang,Qi Song,Changjian Zhou,Di Li,Deli Jiang
Due to the multiple electron and proton transfer processes involved, the photogenerated charges are easily recombined during the photocatalytic reduction of CO2, making the generation of the eight-electron product CH4 kinetically more difficult. Herein, Ni3B nanoparticles modulated by p-block element were combined with TiO2 nanosheets to construct a novel Schottky junction photocatalyst (Ni3B/TiO2) for the selective photocatalytic conversion of CO2 to CH4. The formed Ni3B/TiO2 photocatalyst with Schottky junction ensures a transfer pathway of photogenerated electrons from TiO2 to Ni3B, which facilitates the accumulation of electrons on the surface of Ni3B and subsequently improves the activity of photocatalytic CO2 reduction to CH4. The optimized Ni3B/TiO2 Schottky junction shows an improved CH4 yield of 30.03 μmol g–1 h–1, which was much higher than those of TiO2 (1.62 μmol g–1 h–1), NiO/TiO2 (2.44 μmol g–1 h–1), and Ni/TiO2 (4.3 μmol g–1 h–1). This work demonstrated that the introduction of p-block elements can alleviate the scaling relationship effect of pure metal cocatalysts to a certain extent, and the modified Ni3B can be used as a promising new cocatalyst to effectively improve the selective photocatalytic of CO2 to CH4.
研究领域:
材料科学
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环境科学
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化学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Yue Cao,Shengbo Yuan,Yan Hai,Xinyan Wang,Xiaoman Li,Min Luo
The electrocatalytic nitrate reduction to ammonia (NRA) can address nitrogen cycle imbalance and high carbon emissions; however, the intense competition of hydrogen evolution reaction (HER) restricts the rate of NH3 production. Herein, amorphous Ni3B (a-Ni3B) is designed to balance the NRA and HER. The NH3 yield of a-Ni3B surpasses those of pure Ni and NiO, which is attributed to the preferential adsorption of NO3– on the B and Ni sites of a-Ni3B for the NRA reaction, greatly inhibiting the HER. Furthermore, the a-Ni3B possesses advantages in NRA performance compared to crystalline Ni3B (c-Ni3B) due to more active hydrogen (*H) generated during the catalytic process. The *H in the NRA process on a-Ni3B is verified by the electron spin resonance technique. The NRA mechanism is comprehensively discussed based on the results of in situ characterization and density functional theory calculations. The a-Ni3B can enhance NH3 production by inhibiting HER, which provides ideas for sustainable NH3 synthesis.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
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2024
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IF 14
Fuxi Liu,Qing Liang,Zhenyu Li,Meiqi Liu,Nailin Yue,Zizhun Wang,Xu Zou,Wei Zhang
Electrocatalysts with high activity and long-term durability are vital toward large-scale hydrogen production from electrocatalytic water splitting. Here, the self-supported electrode (FeO x H y @Ni 3 B/NF) with hierarchical heterostructure was simply prepared by using Ni 3 B chunks grown on nickel foam as substrate to in situ form vertical FeO x H y nanosheets. Such hybrid shows efficient oxygen evolution reaction activity with overpotentials as low as 267 and 249 mV at 100 mA cm −2 in 1 M KOH solution and 30 wt% KOH solution, respectively. Meanwhile, it also exhibits excellent catalytic stability, sustaining catalysis at 500 mA cm −2 in 1 M KOH solution for 200 h, and even for 200 h at 1000 mA cm −2 in 30 wt% KOH solution. Further experimental results reveal that the FeO x H y @Ni 3 B/NF is endowed with superhydrophilic and superaerophobic surface properties, which not only provide more mass transport channels, as well as facilitated the diffusion of reaction intermediates and gas bubbles. Also, it holds faster reaction kinetics, more accessible active sites and accelerated electron transfer rates due to strong synergistic interactions at the heterogeneous interface.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Yanran Su,Liang Li,Dao Wang,Yang Xu,Lingling Ma,Gengping Wan,Changlong Du,Jun Liu,Ying Zhang,Qiyi Wei,Guizhen Wang
The development of electronic information technology has placed higher demands on microwave absorption materials (MAMs), especially the exploration of novel MAMs to broaden their application. At present, little attention has been given the wave absorption properties of transition metal borides (TMBs). In this work, a simple and economical method is developed to prepare Ni 3 B/Ni heterostructure nanosheets and their possible applications for microwave absorption (MA) and supercapacitor are evaluated. It is worth noting that Ni 3 B/Ni nanosheets exhibit excellent MA properties due to the aggregated nanosheet-like morphology of Ni 3 B/Ni with enhancing interfacial polarization, as well as the synergistic effect of dielectric and magnetic losses. It is observed in experiments that the minimum reflection loss value of Ni 3 B/Ni is −41.60 dB at 16.8 GHz. Moreover, the maximum effective absorption bandwidth can reach 3.28 GHz. Furthermore, Ni 3 B/Ni has good energy storage characteristics and is able to provide a specific capacity of 1150.6 F g −1 at a current density of 1 A g −1 . Meanwhile, it has the ability to maintain an initial capacity of 74.4 % after 1000 cycles at a current density of 10 A g −1 . Therefore, this study provides an idea to explore TMBs as high-performance MA and supercapacitor materials.
研究领域:
材料科学
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电子工程
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DOI
PubMed
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 42
·17953-17960
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IF 7.79
Yuanyuan Wu,Junqiang Yin,Wei Jiang,Hongji Li,Chunbo Liu,Guangbo Che
Developing efficient and promising non-noble catalysts that can promote both the HER and OER in the same electrolyte is vital. Currently, these reported bifunctional catalysts show only moderate electrocatalytic water-splitting performance, which is much lower than expected. In addition, most of these promising nonprecious electrocatalysts work well only at small current densities (e.g. 10 mA cm−1), but at large current densities their stability and activity are far from satisfactory for practical applications. Herein, we have successfully constructed an urchin-like Ni3S2@Ni3B heterostructure electrocatalyst on Ni plates. The resulting material exhibits great catalytic activities for both the HER and OER, even at large current densities, reaching a current density of 1000 mA cm−l at relatively low applied overpotentials of 517 and 632 mV, respectively. The excellent catalytic performance of Ni3S2@Ni3B/NP is found to benefit from the effective integration of the unique surface structure and the interface electronic structure.
研究领域:
电化学
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材料科学
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催化
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2020
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IF 16.683
Fahao Ma,Shuhua Wang,Xizhuang Liang,Cong Wang,Fengxia Tong,Zeyan Wang,Peng Wang,Yuanyuan Liu,Ying Dai,Zhaoke Zheng,Baibiao Huang
Electrocatalytic synthesis of hydrogen peroxide (H 2 O 2 ) via the two-electron oxygen reduction reaction (2e − ORR) is an ideal method for the on-site H 2 O 2 production. Herein, Ni 3 B is identified as an active, selective, and stable catalyst for ORR to generate H 2 O 2 , which exhibits a high selectivity of over 90 % and an onset potential of ∼0.7 V versus the reversible hydrogen electrode (RHE). Furthermore, the mass activity of Ni 3 B is about 16.5 A g -1 at 0.52 V (RHE), which is comparable to some noble metal alloys. Our experimental results suggest that the high performance of Ni 3 B originates from the alloying process of Ni and B atoms. The density functional theory calculations reveal that the inner B atoms with high electronegativity decrease the state density of Ni-3d orbital near the Fermi level relative to Ni, which optimizes the binding energy of OOH* and makes Ni 3 B a highly efficient and stable catalyst for the two-electron ORR.
研究领域:
催化
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电化学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2025
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IF 6.2
Xia Zhang,Mingyu Yao,Xiaoyi Jiang,Wenlong Li,Feilong Huang,Hongliang Xu,Hailong Wang,Hongxia Lu,Cheng Fang
Ductile interphases serve as mechanical fuses to deflect matrix cracks in carbon fiber reinforced ultra-high temperature ceramic composites (C f /UHTCs). This work introduces Ni 3 B, a ductile ceramic with intrinsically low shear modulus (79 GPa) and high bulk modulus (236 GPa, G/B = 0.33), as the interphase in C f /ZrB 2 -SiC composites. A hydrothermal carbon/Ni 3 B hierarchical architecture was further engineered to resolve thermal expansion mismatch between Ni 3 B coating and carbon fibers. The optimized interface enhances fracture toughness and flexural strength by 65 % and 47 %, compared to the unmodified composites. In addition, Ni 3 B derived low-density oxides could generate volume expansion under oxidative conditions, sealing interfacial microcracks and elevating critical thermal shock temperature difference from 428 ℃ to 824 ℃. By uniquely coupling interface toughening with self-healing functionality, Ni 3 B is predicted to be a promising interphase material for future C f /UHTC composites.
研究领域:
材料科学
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陶瓷学
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复合材料力学
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界面工程
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高温结构材料
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DOI
高影响因子
Nano Research
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2022
·Vol. 16
·期 10
·12043-12049
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IF 10.269
Xue Kehui,Zhu Haifeng,Zhao Xingyu,Rodrigues Liana Alvares,Reddy D. Amaranatha,Zhang Yaping,Yu Lianqing
Bismuth vanadate (BiVO 4 , BVO) as a promising photoelectrode has been received great attention for photoelectrochemical (PEC) water splitting. However, the slow oxidation kinetics on the surface of BiVO 4 limited the PEC water splitting efficiency. Herein, nickel boride (Ni 3 B, NB) nanoparticles, generally used in electrocatalytic field material, were modified on the surface of BiVO 4 photoelectrode as an efficient cocatalyst to accelerate the oxygen evolution reaction. The as-prepared BVO-NB-5P photoelectrode exhibits a remarkable photocurrent density of 1.47 mA·cm −2 at 1.23 V versus the reversible hydrogen electrode (RHE) under air mass (AM) 1.5 G illumination, which is about 2.8 times higher than the bare BiVO 4 photoelectrode, and its water splitting rate is 11.3 times higher than bare BiVO 4 . The PEC studies reveal that the spin coated Ni 3 B crystal cocatalyst could effectively reduce the water oxidation barrier, and improve the surface charge injection efficiency to 94%, which could boost the photogenerated holes reaction to enhance the PEC performance of BiVO 4 photoelectrode.
研究领域:
材料科学
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能源科学
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催化科学
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DOI
高影响因子
JOURNAL OF APPLIED ELECTROCHEMISTRY
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2016
·Vol. 46
·期 12
·1177-1186
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IF 2.223
Guo Jie,Hou Yongjiang,Li Bo,Wang Yaquan
Abstract The Ni–B-modified carbon paste electrodes were synthesized by the electroless deposition, followed by thermal treatment. Scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were performed to gather information about the morphology, crystallinity, and binding energy. The fabricated Ni–B/C electrodes are applied to methanol electrooxidation in alkaline media. The results show that Ni–B/C catalyst with a comparable amount of microcrystalline Ni and Ni 3 B, 59 and 41 wt%, displayed a significantly enhanced electrocatalytic activity, which is approximately three times the activity of the unheated Ni–B/C catalyst. The synergetic mechanism of methanol oxidation was proposed that involves one Ni 3 B site favor the adsorption and activation of the methanol molecule and one Ni site for oxidative mediation of methanol. In addition, the kinetic parameters of the reaction were calculated using linear sweep voltammetry. Graphical abstract The illustration of the speculated methanol oxidation mechanism.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Rui Zhu,Yanhui Wang,Liang Dong,Xueqing Tian,Fanjia Sun,Renjie Liu,Shiwei Song,Jianbing Zang
Transition metal borides have attracted considerable attention as promising electrocatalysts for water electrolysis due to their high electrical conductivity and distinctive electronic structures. In this study, a NiCoMoO-B-NF catalyst featuring a Ni 3 B/Co 4 B heterostructure was in situ synthesized via boronizing of NiCoMoO 4 as the precursor. At the heterointerface, Ni sites with a significantly downshifted d-band center preferentially catalyze hydrogen desorption, whereas Co sites facilitate water dissociation. This bifunctional synergy substantially enhances HER kinetics. The boronizing process etched the precursor, generating a porous structure and exposing additional active sites. Moreover, boron promoted the reconstruction of metal sites during the oxygen evolution reaction (OER). The Mo component was partially dissolved as MoO 4 2− during OER and synergistically interacted with the generated B(OH) 4 − to form a dynamic protective layer, thereby improving the catalyst's resistance to Cl − corrosion in alkaline seawater. The NiCoMoO-B-NF catalyst exhibited low overpotentials of 169 mV for HER and 298 mV for OER at 100 mA cm −2 in 1 M KOH, with durability exceeding 110 h. In alkaline real seawater, slightly higher overpotentials of 175 mV for HER and 301 mV for OER were observed at the same current density, while good long-term stability was maintained. Furthermore, a two-electrode electrolyzer employing this bifunctional catalyst required only 1.95 V to achieve 500 mA cm −2 for overall water splitting, demonstrating its practical potential for seawater electrolysis. This work provides insights into the design of efficient and stable transition metal boride heterostructures for water and seawater electrolysis.
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DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 34
·17849-17857
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IF 6.895
Gang Zhao,Yumeng Chen,Pengxiao Sun,Shuhua Hao,Xiaoke Wang,Guangmeng Qu,Yupeng Xing,Xijin Xu
Nickel–cobalt-based molybdates have been intensively investigated because of their high theoretical specific capacitance and multifarious oxidation states. Here, we have successfully synthesized hierarchical structures (Ni3B/Ni(BO2)2@NixCoyMoO4) by boronizing NixCoyMoO4 nanosheets on flexible carbon cloth substrates. Benefitting from the synergistic effect among Ni3B, Ni(BO2)2 and NixCoyMoO4 in hybrid architectures, the electrode material possesses higher capacity of 394.7 mA h g−1 at 1 A g−1 and a good rate performance (309.5 mA h g−1 maintained at 20 A g−1). Then, a hybrid supercapacitor assembled with Ni3B/Ni(BO2)2@NixCoyMoO4 and activated carbon as the positive and the negative electrode, displays a high specific capacitance of 370.7 F g−1 at 1 A g−1 (210 F g−1 at 10 A g−1), a high voltage of 1.7 V, and a high energy density of 131.8 W h kg−1 at the power density of 800 W kg−1 (still 74.7 W h kg−1 maintained at 8000 W kg−1). This study widens the research scope of boronizing pseudocapacitance materials and reveals a high application potential of Ni3B/Ni(BO2)2@NixCoyMoO4 for energy storage devices in the future.
研究领域:
材料科学
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电化学
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能源存储
✓ 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）