JOURNAL OF NANOPARTICLE RESEARCH
·
2017
·Vol. 19
·期 4
·1-10
·
IF 2.02
Zhao Qi,Han Yang,Huang Xiang,Dai Jinhui,Tian Jintao,Zhu Zhibin,Yue Li
Nanosized nickel phosphide (Ni 2 P) has been synthesized via hydrothermal reaction with environmental-friendly red phosphorus and nickel chloride. The reaction mechanism has been studied by measurement techniques of IC, XRD ,TEM, EDS, and XPS. The results showed that the particle sizes of as-prepared Ni 2 P are in nanoscale ranging from 10 to 30 nm. In hydrothermal reaction, red phosphorus reacts with water to its oxyacids, especially its hypophosphorous acid (or hypophosphite) which can reduce nickel chloride to nickel, and then metallic nickel will penetrate into the rest of red phosphorus to generate nano-Ni 2 P. Furthermore, the catalytic performance of as-synthesized Ni 2 P for the hydrodesulfurization of dibenzothiophene has been tested. It has been shown that the HDS reaction process over Ni 2 P catalyst agrees well with the pseudo-first order kinetic equation, and the HDS conversion can reach up to 43.83% in 5 h with a stable increasing catalytic activity during the whole examination process.
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JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Mingyu Pi,Tianli Wu,Weimeng Guo,Xiaodeng Wang,Dingke Zhang,Shuxia Wang,Shijian Chen
The design and development of high-efficiency and non-noble-metal hydrogen evolution reaction (HER) electrocatalysts for future clean and renewable energy system has excited significant research interests over the recent years. In this communication, the polymorphic tungsten diphosphide (p-WP 2 ) nanoparticles with mixed monoclinic (α-) and orthorhombic (β-) phases are synthesized by phase-controlled phosphidation route via vacuum capsulation and explored as a novel efficient electrocatalyst towards HER. The p-WP 2 catalyst delivers superior performance with excellent stability under both acidic and alkaline conditions over its single phases of α-WP 2 and β-WP 2 . This finding demonstrates that a highly efficient hybrid electrocatalyst can be achieved via precise composition controlling and may open up exciting opportunities for their practical applications toward energy conversion.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Ke Zhang,Zhiping Xiong,Shumin Li,Bo Yan,Jin Wang,Yukou Du
Herein, we reduced PdCl 4 2− ions on the synthetized cuprous phosphide/reduced graphene oxidation (Cu 3 P/RGO) hybrids to improve the catalytic activity and durability of Pd nanocrystals . In comparison with commercial Pd/C and Pd/RGO catalysts, the Pd/Cu 3 P/RGO exhibit high electroactivity and durability toward alcohol oxidation in alkaline medium. The enhanced catalytic performance of Pd/Cu 3 P/RGO is due to the high electrochemically active surface area, which can be ascribed to the interactions between Cu 3 P/RGO and Pd nanocrystals . The investigation of Cu 3 P/RGO as a promoter in alcohol electrooxidation will offer an opportunity in the field of direct alcohol fuel cells (DAFCs).
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JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
·
2016
·
IF 3.958
Weibing Li,Yaping Zhang,Guodong Tian,Shuya Xie,Qingqing Xu,Lin Wang,Jiming Tian,Yuyu Bu
In this present paper, nano-sized red phosphorus particles (NRP) were prepared through a mechanical milling and ultrasonic flotation method. The as-prepared red phosphorus nano particles were loaded on the surface of graphene. The residual oxidative bonds on the surfaces of the red phosphorus and graphene were carried out to form effective interface contact. The present results indicated that comparing with large size commercial red phosphorus particles, NRP possesses higher specific surface area and photocatalytic activity. The NRP/graphene composite shows a great adsorption capacity for rhodamine (RhB). Meanwhile, its visible-light-driven decolorization performance for RhB was 5 times higher than that of pure NRP, which can decolorize of RhB completely in only 3 min. So, NRP/graphene composite photocatalyst possess great potential in the area of environment organic pollution purge. Electrochemical impedance spectra (EIS) and Mott-Schottky spectra results of these samples indicated that a downward bend of the conduction band of NRP was formed when it contacted with graphene, resulting in a rapid electron injection into the graphene. Therefore, the probability of recombination of photogenerated carriers was inhibited effectively, thus enhanced the overall photocatalytic performance of the composite material.
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Nanoscale
·
2016
·Vol. 8
·期 47
·19779-19786
·
IF 7.76
Mingyu Pi,Tianli Wu,Dingke Zhang,Shijian Chen,Shuxia Wang
The design and development of high-efficiency and non-noble metal hydrogen evolution reaction (HER) electrocatalysts with optimized nanostructures for human clean and sustainable energy systems has attracted significant research interest over the past years. Herein, self-supported semimetallic tungsten diphosphide nanowire arrays on carbon cloth (WP2 NWs/CC) were topotactically fabricated by in situ phosphidation of a WO3 NWs/CC precursor. Such a binder-free flexible HER cathode with integrated three-dimensional nanostructures can not only provide a large surface area to expose abundant active sites, but also facilitate electrolyte penetration for electrons and electrolyte ions. The WP2 NWs/CC electrode exhibits superior catalytic performance, and it needs overpotentials of 109 and 160 mV with a small Tafel slope of 56 mV dec−1 to achieve current densities of 10 and 50 mA cm−2, respectively. High stability in acidic media is also observed for the catalyst for a duration of 20 hours at least. In addition, density functional theory (DFT) calculations indicate a low kinetic energy barrier for H atom adsorption on the WP2 surface which guarantees the excellent catalytic activity of the catalyst, and the influences of phosphidation temperature on the HER activity are also studied. The excellent electrocatalytic activity makes the present 3D structured WP2 NWs/CC a promising catalyst for large scale highly pure hydrogen evolution by electrochemical water splitting.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Jiayun Cheng,Shufen Ren,Hanping Fu,Qing Zhang,Yan Xie,Qingshuang Liang,Xiufeng Xiao
Improving radiation effect and reducing radiation resistance is the key issue to boost the effectiveness of radiotherapy. Herein, we have developed a novel BiOBr 0.5 I 0.5 -BP heterojunction nanosheets (BOBI-BP NSs) for synergistic radiodynamic and photothermal therapy to enhance the efficacy of low-dose radiotherapy under hypoxic conditions. On one hand, this BOBI-BP heterojunction is rich in high-Z elements (Bi, I) and able to deposit high radiation doses into cancer cells, enhancing the radiotherapy effect. On the other hand, due to the heterojunction structure, a large number of electron-hole pairs can be generated and separated under X-ray trigger, which significantly improves the catalytic activity of catalyzing the overexpressed H 2 O 2 in cancer cells into highly toxic •OH, overcoming the oxygen dependence. 1 O 2 could be generated because of the unique sub-band structures of BP NSs and the synergistic effect between BOBI and BP, thereby improving the therapeutic utility of low-dose X-ray irradiation. The synergistic utility of BOBI-BP NSs as a combination of radiodynamic therapy, photothermal therapy agent and radiosensitizer was demonstrated both in vitro and in vivo. This work provides the idea to develop rational designed heterostructures as efficient therapeutic nanoplatform for cancer treatment.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Guanghui Luo,Huimin Liu,Ruilin Wang,Chengyu Duan,Mengdi Sun,Yinglong Lu,Zheshun Ou,Zhuofeng Hu
Developing efficient catalysts to enhance photoreduction carbon dioxide (CO 2 ) into hydrocarbon fuels is a great challenge. As metallic material, molybdenum dioxide (MoO 2 ) has very high conductivity and charge density, which make it a promising candidate as photocatalyst. However, its photocatalytic activity is limited by the serious charge recombination. How to effectively make full use of the metallic MoO 2 for photocatalytic CO 2 reduction is still a critical issue. The potential effective way to solve this problem is to introduce appropriate auxiliary catalysts to construct electron-rich interfaces. In this study, red phosphorus (P) is dispersed on MoO 2 nanoparticles to construct electron-rich interfaces which can serve as the active site for photocatalytic CO 2 reduction. The results show that the reduction of CO 2 by pure MoO 2 only produces carbon monoxide (CO) and methane (CH 4 ). However, with the aid of red P, the P-MoO 2 photocatalyst can produce ethylene (C 2 H 4 ) with the yield of 5.43 μmol h −1 g −1 , and the CO and CH 4 yields are also significantly improved. Experimental results and density functional theory (DFT) calculations indicate that photogenerated carriers can migrate from MoO 2 to the interface, and the reduction of CO 2 occurs at the interface. This study provides a significant insight for the design of efficient photocatalysts by using metallic photocatalysts.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·
IF 3.7
Jinchun Tu,Jiazheng Hu,Bingrong Wang,Hai Li,Zhun Tang,Mingliang Guo
Developing economical and robust electrocatalysts to prevent chlorine ions corrosion and improve seawater splitting efficiency is essential for seawater electrolysis. Herein, fluorine-doped nickel cobalt phospho-sulfide nanowires (F-NiCoPS NWs) were synthesized as high-performance catalysts for overall seawater splitting. The strongly electronegative F anion is favorable to build weak metal fluorine bonds, which easily break to generate highly active species of Ni/Co-hydroxides/oxyhydroxides protective layer on the electrode surface. This process effectively avoids chlorine evolution reaction (ClER)-induced dissolution, and enhances the stability of catalysts. Density functional theory (DFT) calculations indicate that the electronegative fluorine affects the electronic structure of the catalyst’ surface, further enhancing the adsorption energy and electronic conductivity of the reaction intermediates. F-NiCoPS with appropriate F doping significantly decreased the overpotential (228 (303) mV at 10 (100) mA cm-2) and the Tafel slope (44 mV dec-1) in alkaline seawater, and exhibited a long stability of 100 h. This work provides new insights for constructing effective, cost-efficient and non-noble metal electrocatalyst for alkaline seawater splitting.
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IEEE SENSORS JOURNAL
·
2024
·
IF 4.3
Bolun Tang,Yunbo Shi,Canda Zheng,Kuo Zhao
To date, various materials have been widely investigated for developing highly selective and sensitive sensors for NO
2
, a common hazardous gas. However, the associated NO
2
-gas-sensor fabrication methods exhibit several drawbacks, which hinder the development of NO
2
-sensitive gas sensors with excellent selectivity. In this study, NiP
2
-Ni
2
P polymorphs with observable heterointerfaces were prepared using metalloid NiP
2
and metallic Ni
2
P for NO
2
gas sensing, and the characteristics of the synthesized polymorphs were evaluated through X-ray diffraction and energy-dispersive spectrometry. At 160 °C, the fabricated sensor exhibited a response of 1.5%-93.14% for NO
2
gas over a concentration range of 0.5-60 ppm; its response and recovery times were 16 and 55 s, respectively. In addition, the sensor exhibited excellent NO
2
selectivity and long-term stability. Density functional theory calculations revealed the adsorption sites of NO
2
molecules on NiP
2
, and the gas-sensing mechanism was elucidated. The findings of this study establish NiP
2
-Ni
2
P, which is currently employed as an outstanding electrocatalyst for hydrogen evolution, as a potential NO
2
sensor platform with excellent selectivity and efficient recovery characteristics.
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MOLECULES
·
2024
·Vol. 29
·期 6
·1271
·
IF 4.2
Jingjing Wang,Fulai Liu,Yunfei Li,Long Chen,Yong Chen,Hailong Zhang,Zheng Xie
Although laser technology brings convenience to production and daily life, it also causes high-energy damage. Therefore, there is an urgent need to develop optical limiting materials for laser protection. In this study, a novel nonlinear optical material, red/black phosphorus lateral heterojunction, is successfully prepared through solvothermal and ultrasonic treatment. Using the Z−scan method, the nonlinear optical properties of the red/black phosphorus heterojunction are determined at wavelengths of 532 and 1064 nm. These results indicate that the red/black phosphorus heterojunction exhibits reverse saturable absorption properties in 1.2.3-glycerol. Interestingly, the red/black phosphorus heterojunction shows an enhanced performance over red phosphorus by introducing the black phosphorus phase. Moreover, the red/black phosphorus heterojunction is doped into organically modified silicate gel glass with excellent broadband optical limiting performance. This study highlights the promising prospect of the red/black phosphorus heterojunction in the nonlinear optical and optical limiting fields.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yi Zhang,Jianguo Jiao,Hao Chen,Kai Gao,Yilong Ren,Yunze Li,Lin Zhang,Guoxin Xie,Jianbin Luo
A rough surface composed of asperities was considered as the obstacle for achieving superlubricity in traditional friction theory. Here, microscale superlubricity with the friction coefficient of 0.0086 was observed on a relatively rougher soft surface of black phosphorus (BP) composite due to the degradation of BP with oxygen and moisture via the atomic force microscopy (AFM) experiment equipped with diamond-like carbon (DLC) microsphere probe. Comparative analyses corroborated that the produced phosphorus oxides (oBP) with abundant P=O and P−OH bonds and the local graphitized amorphous carbon film at the sliding interface decreased the possibility of direct contact between original rough peaks and provided an ultra-low shear strength for achieving superlubricity. Furthermore, a certain nanoscale roughness structure on the composite surface facilitated a more reliable superlubricity state, which supplied the larger contact area and locking capillary force to hold and retain the lubricating liquid film formed by the water absorption of oBP. These findings provided fundamental insights into the nature of tribological mechanisms and suggested a new method to achieve ultra-low friction of polymer composite materials in engineering.
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Advanced Energy Materials
·
2017
·Vol. 8
·期 1
·1701799
·
IF 16.721
Tong Wu,Jinchen Fan,Qiaoxia Li,Penghui Shi,Qunjie Xu,Yulin Min
Designing high-performance palladium (Pd) supports with enhanced ethanol oxidation reaction (EOR) activity has consistently been a challenge. Here, a novel anatase titanium dioxide nanosheets-black phosphorus (ATN-BP) hybrid is fabricated as a support for Pd nanoparticles used in the EOR. The direct ball-milling of BP nanoflakes and ATN under argon protection lead to the formation of ATN-BP hybrids with BP nanoflakes interconnected by cataclastic ATN with P O Ti bonds. The structure of ATN-BP not only is beneficial for improving the electrolyte penetration and electron transportation but also has a strong influence on the stripping of reactive intermediates through the synergistic interaction between Pd and ATN-BP. The results demonstrate that the Pd/ATN-BP hybrids with heterointerfaces of Pd, BP, and ATN exhibit ultrahigh electroactivity and durability. In the EOR, the Pd/ATN-BP catalyst can achieve an electrochemically active surface area of ≈462.1 m 2 g Pd −1 and a mass peak current density of 5023.8 mA mg Pd −1 , which are 11.67 and 6.87 times greater, respectively, than those of commercial Pd/C. The Pd/ATN-BP catalysts also show remarkable stability with a retention rate of the peak current density of ≈30.6% after a durability test of 3600 s.
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