APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Qiumei Hou,Jingxuan Cai,Li Zuo,Hui Chen,Yuchuan Fu,Jianyi Shen
Supported Ni (60 wt% Ni) catalysts were prepared and phosphided into corresponding Ni 2 P catalysts. They were used for the hydrogenation of furfural as well as for the probe reactions (the hydrogenation of furan and propanal). The results demonstrated that the acidic support promoted the adsorption and hydrogenation of furan ring and aldehyde group over the nickel sites while the basic support played the opposite role. The IR spectra demonstrated that the aldehyde group was more easily hydrogenated than the furan ring at room temperature, implying the sequential hydrogenation of furfural to furfuryl alcohol (FA) and then to tetrahydrofurfuryl alcohol (THFA) over Ni. The microcalorimetric studies revealed that both the aldehyde group and furan ring were strongly adsorbed on Ni so that the Ni catalysts were highly active to hydrogenate the two groups, i.e., the Ni catalysts favored the formation of THFA. On the other side, although the adsorption heats of aldehyde group were much lower on Ni 2 P than on Ni, the adsorption heats were significantly higher for aldehyde group than for furan ring on Ni 2 P, implying the high selectivity to FA on Ni 2 P.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2021
·
IF 4.311
Shahid Khan,Tariq Ali,Xianfu Wang,Waseem Iqbal,Tariq Bashir,Wang Chao,He Sun,Hauliang Lu,Chenglin Yan,Rana Muhammad Irfan
The development of cheap and effective catalysts is one of the major challenges to boost up electrocatalytic oxygen evolution reaction (OER). In this study, we synthesized phosphorus incorporated nickel sulfide (Ni 3 S 2 @Ni 5 P 4 /NF) composite via a simple one-step hydrothermal treatment for electrocatalytic oxygen evolution reaction in basic media. The newly synthesized Ni 3 S 2 @Ni 5 P 4 /NF composite catalyst shows a remarkable OER activity with an overpotential of 399 mV at a current density of 50 mA cm −2 . Ni 3 S 2 @Ni 5 P 4 /NF also shows a Tafel slope of 75 mV dec -1 with long-term stability for more than 15 h in alkaline media. The enhanced electrocatalytic activity of current system is among best catalysts based on Nickle sulfides and nickel phosphides according to our knowledge. Current enhancement can be attributed to fast electron transfer due to synergistic effect of Ni 3 S 2 and Ni 5 P 4 in the composite.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Yan Zhang,Yang Tan,Xiuxiu Wang,Liang Dong,Aihua Liu
Nickel oxide and nickel phosphide supported by nitrogen-doped multi-walled carbon nanotubes (NiO-Ni 12 P 5 /NCNTs) nanocomposites were reported as non-noble metal hybrid electrocatalysts for hydrogen evolution reaction (HER). First, an amorphous nickel phosphorous coating was facilely formed on the surface of pristine CNTs (aNi-P/CNTs) through a simplified electroless deposition without the pretreatment steps of purification, sensitization and activation. Then, aNi-P/CNTs were heated with melamine at 600 °C for 1 h under an Ar atmosphere to prepare NiO-Ni 12 P 5 /NCNTs. The as-fabricated NiO-Ni 12 P 5 /NCNTs electrocatalysts showed high HER electrocatalytic activity of -0.17 V at 10 mA cm −2 , a Tafel slope of 75 mV dec -1 and a high exchange current density of 0.049 mA cm -2 . Moreover, the NiO-Ni 12 P 5 /NCNTs electrocatalysts showed a much higher durability than Pt/C after the accelerated durability tests in 0.1 M KOH. The NiO-Ni 12 P 5 /NCNTs electrocatalysts displayed good activity and stability for HER, which may originate from the synergistic effect between the Ni compound and NCNTs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xin Guo,Longyu Qiu,Menggang Li,Fenyang Tian,Xue Ren,Sheng Jie,Shuo Geng,Guanghui Han,Yarong Huang,Ying Song,Weiwei Yang,Yongsheng Yu
Nickel sulfide (Ni 3 S 2 ) is a highly promising electrocatalyst for urea oxidation reaction (UOR), and NiOOH formed by the surface phase transition of Ni 3 S 2 during UOR is the ideal catalytic active species. However, the strong covalent bonds of Ni 3 S 2 hinders the generation of NiOOH, limiting the further improvement of UOR activity. Herein, the Ni 3 S 2 @Ni 3 P core–shell nanorods have been constructed by an in-situ surface phosphating method to boost UOR performance, realizing high catalytic activity (100/1000 mA cm −2 at 1.36/1.49 V vs . RHE, respectively) and a rapid kinetics (19.13 mV dec -1 ). The Ni 3 P on the surface of Ni 3 S 2 can rapidly form highly active γ-NiOOH with low energy consumption, and the formed Ni 3 S 2 @γ-NiOOH accelerates proton-coupled electron transfer (PCET) kinetics through reducing the energy barrier of urea dehydrogenation process, thereby enhancing UOR intrinsic activity. In addition, we also demonstrate a Ni 3 S 2 @Ni 3 P//Ni 3 S 2 @Ni 3 P urea electrolysis device with low voltages of 1.54 and 1.69 V at current densities of 100 and 500 mA cm −2 , respectively. This work proposes an efficient strategy to accelerate the generation of NiOOH on the surface of Ni 3 S 2 during UOR electrocatalysis, revealing the enhanced UOR mechanism of Ni 3 S 2 @Ni 3 P, which can promote the development of urea-assisted hydrogen production .
研究领域:
电化学
·
催化材料
·
能源转换与储存
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Yin Huang,Yaoyao Pan,Xiaoyu Huang,Jialu Zhao,Xiuhua Wang
During water electrolysis, multifunctional electrocatalysts with outstanding functionality and endurance must be thoughtfully constructed and designed. Below, we report a hollow NiS@Ni 2 P nanoframe heterostructure that works well as a substitute catalyst for the urea oxidation and general water splitting reactions. The hollow NiS@Ni 2 P nanoframe was synthesized by ion exchange, sulfurization and phosphating, which is favorable for achieving a heterostructure. The NiS@Ni 2 P catalyst exhibits excellent catalytic activity and strong long-term stability in 1.0 M KOH solutions for the hydrogen evolution reaction, which needs 121 mV to achieve 10 mA cm −2 . And for the oxygen evolution reaction, the catalyst needs 311 mV to acquire 50 mA cm −2 . These advantages come from the optimal electronic structural configuration, hierarchical hollow nanoframe structure, and large surface area. It could attain 10 mA cm −2 at 1.41 V when utilized as a urea oxidation reaction anode, which is lower than the oxygen evolution reaction. For total water splitting and urea oxidation process, NiS@Ni 2 P as a bifunctional catalyst holds tremendous promise due to its strong electrocatalytic activity, ease of manufacture, and low cost of raw ingredients.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Caichi Liu,Tao Gong,Jun Zhang,Xuerong Zheng,Jing Mao,Hui Liu,Ying Li,Qiuyan Hao
Developing earth-abundant transition-metal phosphides electrocatalysts with high activity and good durability toward alkaline hydrogen evolution reaction (HER) is crucial for sustainable hydrogen energy economy. However, their intrinsic activity is limited by the inadequate hydrogen adsorption energy. Herein, we reported a novel self-supported heterostructure catalyst in the form of Ni 2 P-NiSe 2 , which is obtained by phosphorization of NiSe 2 nanosheet arrays grown on the carbon cloth. The heterostructure catalyst exhibits excellent HER performance in 1 M KOH, only requiring an overpotential of 66 mV at a current density of 10 mA cm −2 with a Tafel slope of 72.6 mV dec -1 and showing excellent long-term durability. The experimental and theoretical calculation results demonstrate the strongly electronic interaction between Ni 2 P and NiSe 2 , resulting in the optimized Gibbs free energy of hydrogen and water adsorption. This work concerning the regulation of electronic structure through interface engineering may offer a deep insight to explore superior catalysts.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2021
·
IF 3.785
Songzhao Wang,Jiwen Hu,Xuefeng Gui,Shudong Lin,Yuanyuan Tu
Ni 12 P 5 has excellent electrochemical properties due to the existence of a large number of Ni P bonds with abundant phosphorus vacancies. RuO 2 has good electrical conductivity and catalytic activity , and its OER activity is very significant. In this paper, RuO 2 nanoparticles were loaded onto the surfaces of Ni 12 P 5 particles, forming RuO 2 /Ni 12 P 5 /C composite electrode catalytic materials which were prepared and applied to Li O 2 cells. The electrochemical tests reveal that the specific capacity of the Li O 2 battery with a RuO 2 /Ni 12 P 5 /C electrode reaches 4296 mAh g −1 , the cycle life reaches 56 cycles, and the over-potential is effectively controlled at the current density of 200 mA g −1 . This improvement is attributable to the effective adsorption of phosphorus vacancies in Ni 12 P 5 and the excellent OER catalytic activity of RuO 2 . Therefore, this work significantly enhanced the electrochemical performance of the cell, thus laying the foundation for the development of Li O 2 batteries.
研究领域:
电化学
·
材料科学
·
能源存储
·
催化化学
·
纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Ning Song,Shihuan Hong,Mengya Xiao,Yan Zuo,Enhui Jiang,Chunmei Li,Hongjun Dong
The application of NiCo-LDHs in the hydrogen evolution reaction (HER) is rarely reported because it is usually served as an effective electrocatalyst for oxygen evolution reaction (OER) owing to the essential chemical and electric structure features. It still is a challenge to realize the effective HER over NiCo-LDHs unless modified with noble metals . In this work, the noble-metal-free core–shell Co(OH) 2 @P-NiCo-LDH hybrid with dodecahedral hierarchical structure is prepared by the sacrificial template method along with subsequent phosphating process, which is available for the electrocatalytic HER. The fabricated Co(Ni) δ+ -P δ- bonding states on the surface of outer shell NiCo-LDH not only provide the abundant active centers but also reduce interfacial charge transfer resistance to enhance the HER activity. Meanwhile, the unique core–shell dodecahedral structure effectively avoids the agglomeration and restacking of NiCo-LDH nanosheets to improve the electrochemical stability. This work exploits a novel noble-metal-free modification strategy to expand the application of NiCo-LDH in HER.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Riyang Shu,Yu Chen,Yuankai Lin,Yongyuan Deng,Yan Liu,Kaixin Li,Tao Yin,Zhongqing Ma,Jinxing Long
Catalytic hydrodeoxygenation (HDO) is an efficient and promising approach to upgrade lignin-derived phenolic compounds for the production of high-quality liquid fuels. In this work, a readily obtained Ni-Ni 3 P/ZrP catalyst featuring synergistic catalytic sites of Ni-Ni 3 P and Lewis-Brønsted acid was provided for promoting the HDO performance of lignin-derived phenolic compounds. By regulating the ratio of Zr to P (Zr/P), the catalytic activity of Ni/ZrP was significantly modified. With the optimized catalyst of Ni-Ni 3 P/ZrP-0.75, guaiacol is completely converted into cyclohexane at a low temperature of 240 °C. Further investigation shows that the synergistic effect of Ni and Ni 3 P, deriving from that Ni acts as metal site to activate hydrogen and Ni 3 P serves as Lewis acid site to adsorb guaiacol substrate, promotes the hydrogenation procedure significantly. Moreover, ZrP support as Lewis acid also demonstrates a synergistic interaction with Brønsted acid site that derives from the P-OH group. The coordination of Lewis-Brønsted acid site significantly improves the deoxygenation procedure. The strong interaction between Ni species and ZrP support accelerates the sequential occurrence of hydrogenation and deoxygenation procedures, thus improving the HDO efficiency. The Ni-Ni 3 P/ZrP-0.75 can be reused at least six runs without significant activity loss. Moreover, this Ni-Ni 3 P/ZrP-0.75 is efficient on the upgrading of realistic lignin-oil, with the hydrocarbon content increase from 13.4 % to 93.8 %. Therefore, this work provides a valuable reference for the rational design of bifunctional catalysts in the HDO reactions.
研究领域:
催化化学
·
生物质能源
·
环境友好化学
·
表面科学
·
材料化学
✓ 已验证
产品关联
DOI
高影响因子
Chemical Science
·
2017
·Vol. 9
·期 5
·1375-1384
·
IF 8.668
Fang-Shuai Zhang,Jia-Wei Wang,Jun Luo,Rui-Rui Liu,Zhi-Ming Zhang,Chun-Ting He,Tong-Bu Lu
The development of highly efficient, low-cost and stable electrocatalysts for overall water splitting is highly desirable for the storage of intermittent solar energy and wind energy sources. Herein, we show for the first time that nickel can be extracted from NiFe-layered double hydroxide (NiFe-LDH) to generate an Ni2P@FePOx heterostructure. The Ni2P@FePOx heterostructure was converted to an Ni2P@NiFe hydroxide heterostructure (P-NiFe) during water splitting, which displays high electrocatalytic performance for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1.0 M KOH solution, with an overpotential of 75 mV at 10 mA cm−2 for HER, and overpotentials of 205, 230 and 430 mV at 10, 100 and 1000 mA cm−2 for OER, respectively. Moreover, it could afford a stable current density of 10 mA cm−2 for overall water splitting at 1.51 V in 1.0 M KOH with long-term durability (100 h). This cell voltage is among the best reported values for bifunctional electrocatalysts. The results of theoretical calculations demonstrate that P-NiFe displays optimized adsorption energies for both HER and OER intermediates at the nickel active sites, thus dramatically enhancing its electrocatalytic activity.
研究领域:
材料科学
·
能源化学
·
电催化
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yirui Wang,Liuping Liang,Yuqing Tang,Wanling Xiao,Tao Zhou,Peikang Shen,Panagiotis Tsiakaras
Surface reconstruction is the key to improving the intrinsic activity of non-precious metal-based catalysts for the urea oxidation reaction (UOR). In this work, Cerium doped Nickel phosphide (Ce-Ni 5 P 4 ) porous nanosheets were synthesized by conventional hydrothermal and phosphorylation methods. It is found that the introduction of Ce 4f induces the electron transfer from P and Ni to Ce, increasing the chemical state of Ni, boosting the reconstruction of Ni 5 P 4 toward active substances of NiOOH with higher UOR activity and improves the UOR intermediates adsorption behavior on the (210) crystal plane for efficient electrochemical reaction. The results show that Ce-doped Ni 5 P 4 improves the UOR performance of only 1.33 V at 500 mA cm −2 , and exhibits exceptional stability over 120 h. Meanwhile, the AEMWE assembly by Ce-doped Ni 5 P 4 || MoNi foam possess a lower voltage of 2.37 V than RuO 2 ||MoNi foam at 1 A cm −2 , demonstrating an excellent performance in industrial applications. The in-situ Raman confirms the enhanced electrochemical reconstruction process caused by the introduction of Ce, which promotes the large current density UOR process. The theoretical calculations show that the stable (210) crystal plane without reconstruction is activated by the Ce doping, and the modulated electron distribution around the Ni sites weakens the binding energy of the Ni N bond, reducing the energy barrier of the rate-determining step for more efficient reaction kinetics. This work provides a hierarchical reconstruction strategy to promote the coupling of activated structures and stable bulks, improving the catalytic UOR activity at large current density and providing new insights for the development of catalysts for industrial applications.
研究领域:
材料科学
·
电化学
·
催化
·
纳米技术
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yuelong Xu,Ran Wang,Yuxuan Zheng,Lihui Zhang,Tifeng Jiao,Qiuming Peng,Zhenfa Liu
Because of their high catalytic activity and abundant resources, nonprecious transition metal phosphides are favorable substitutes for noble metals as hydrogen evolution reaction (HER) electrocatalysts. In this work, self-assembled Ni/Co phosphide composite N-doped carbon spheres were successfully prepared via a hydrothermal process, which had abundant exposed active sites for the HER. The as-obtained samples exhibited excellent electrocatalytic activity for the HER with an overpotential of only 160 mV (vs. RHE) at a current density of 10 mA cm −2 in a 0.5 M H 2 SO 4 solution and a comparatively low Tafel slope (57 mV dec −1 ). Additionally, the Ni 2 P/CoP spheres also show good stability after 120 h and 5000 cycles of a cyclic voltammetry test. Their highly efficient catalytic activity for the HER is attributed to the specific spherical structure, which provides exposed Ni 2 P and CoP for favorable adsorption and desorption of hydrogen. Therefore, nonprecious transition metal phosphide spheres may provide a promising strategy to improve the catalytic activity of HER electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 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）