12019-57-7Relevant academic research and scientific papers
Mineralization routes to polyphosphides: Cu2P20 and Cu5InP16
Lange, Stefan,Bawohl, Melanie,Weihrich, Richard,Nilges, Tom
, p. 5654 - 5657 (2008)
(Figure Presented) Mineralization chemistry: Cu2P20 and Cu5InP16 were synthesized by a mineralization reaction from the elements and binary starting materials. Cu2P20 is the first representative retaining the structural features of violet or fibrous phosphorus in a binary compound (see picture). Cu5InP 16 displays a previously unseen layered polyphosphide substructure built up of six-membered rings connected via four phosphorus bridges.
Solvothermal syntheses of Cu3P via reactions of amorphous red phosphorus with a variety of copper sources
Ann Aitken, Jennifer,Ganzha-Hazen, Valentina,Brock, Stephanie L.
, p. 970 - 975 (2005)
Polycrystalline Cu3P was successfully prepared under a wide variety of solvothermal conditions. The reaction of red phosphorus with several copper sources (copper metal, copper (I) iodide, copper (I) chloride and copper (II) chloride) at 150-200 °C for 1-2 days in water produced Cu3P. Products were examined with powder X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. Thermal analyses and optical spectroscopy were also performed. A detailed list of reaction conditions, products and impurity phases (where applicable) are reported.
[Cd3Cu]CuP10, [Cd3Cu] cluster stabilized in an adamantane-like polyphosphide substructure
Bawohl, Melanie,Nilges, Tom
, p. 667 - 673 (2009)
[Cd3Cu]CuP10 is the first representative of the adamantane-like polyphosphides featuring a metalloid, tetrahedral [M 3X] heterocluster, containing only d10 ions. It was prepared by the mineralization concept for
Tailoring the electrochemical hydrogen evolution activity of Cu3P through oxophilic surface modification
Vineesh, Thaze Veetil,Yarmiayev, Valeria,Zitoun, David
, (2020)
The hydrogen evolution reaction in alkaline medium can be promoted by the modification of platinum group metal with oxophilic metals. Herein, an earth abundant metal was first converted to copper phosphide Cu3P and the latter was electrochemically activated by a short and simple procedure to yield an oxidized electroactive surface. Compared with the pristine Cu3P catalyst, the electrochemical activated Cu3P catalyst exhibits an HER overpotential of 155 mV at 10 mA/cm2 (90 mV decrease from Cu3P catalyst) in alkaline medium with a stability over 24 h). XRD, XPS and EDS reveal that the oxidation occurs only on the surface of Cu3P which shows the presence of both copper phosphide and oxide species.
Synthesis and characterization of Cu3P hollow spheres by a facile soft-template process
Wang, Xinjun,Wan, Fuquan,Liu, Juan,Gao, Youjun,Jiang, Kai
, p. 233 - 236 (2009)
Hollow Cu3P microspheres have been successfully synthesized by a facile ethylenediamine tetraacetic acid (EDTA) mediated solvothermal route using CuSO4·5H2O and yellow phosphorus as starting materials in a mixture solution
An approach to preparing porous and hollow metal phosphides with higher hydrodesulfurization activity
Song, Limin,Zhang, Shujuan,Wei, Qingwu
, p. 1556 - 1560 (2011)
This paper describes an effective method for the synthesis of metal phosphides. Bulk and supported Ni2P, Cu3P, and CoP were prepared by thermal treatment of metal and the amorphous red phosphorus mixtures. Porous and hollow Ni2P particles were also synthesized successfully using this method. The structural properties of these products are investigated using X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), inductively coupled plasma (ICPAES) and X-ray photoemission spectroscopy (XPS). A rational mechanism was proposed for the selective formation of Ni2P particles. In experimental conditions, the Ni2P/SiO2 catalyst exhibits excellent hydrodesulfurization (HDS) activity for dibenzothiophene (DBT).
Thermal decomposition of dihypophosphito - (UREA) - copper(II)
Yagodin A.
, p. 537 - 542 (1988)
The physico-chemical properties of the newly synthesized complex Cu(H2PO2)2CO(NH2)2 were investigated. The unit cell parameters and the mode of coordination of the urea molecule were determined. The thermal decomposition of the complex, which displays a topochemical character, was studied by thermogravimetric and mass-pectrometric methods. The end-products of the decomposition were detected. The activation energies of the process in the temperature ranges 323-330 K are 23.4 ± 1.4 and 20.64 ± 2.2 kcal/mol, respectively.
Use of synergistic effects of the co-catalyst, p-n heterojunction, and porous structure for improvement of visible-light photocatalytic H2 evolution in porous Ni2O3/Mn0.2Cd0.8S/Cu3P@Cu2S
Zhang, Dafeng,Tang, Yunxiang,Qiu, Xiaoxue,Yin, Jie,Su, Changhua,Pu, Xipeng
, (2020)
The efficient separation and transfer of photogenerated charge carriers play indispensable roles in improving the photocatalytic H2 evolution activity. Herein, we designed a Ni2O3-modified Mn0.2Cd0.8S/Cu3P@Cu2S (MCS/CPS) p-n heterojunction structure with a porous morphology for efficient and stable photocatalytic H2 evolution under visible-light irradiation. Novel porous Cu3P@Cu2S was obtained using a vulcanization method and Cu2S nanoparticles were grown uniformly in situ on the surface of Cu3P. Ni2O3 was adopted as a co-catalyst on the MCS/CPS p-n heterojunction surfaces to promote electrons transfer. Due to the synergistic effects of the co-catalyst, p-n heterojunction, and porous morphology, the as-synthesized Ni2O3/MCS/CPS composite with 9 wt% Ni2O3 and 2.5 wt% CPS exhibits an optimal photocatalytic H2 evolution rate of 9.2 mmol g?1 h?1, which is 14.4 and 2.4 times higher than those of pure MCS and 9%Ni2O3/MCS, respectively. Meanwhile, the optimal sample exhibits an apparent quantum efficiency of 33.5% at 420 nm and an excellent stability under 20 h of irradiation. Moreover, a possible mechanism for the improved photoactivity of the as-synthesized Ni2O3/MCS/CPS composite has been discussed in this paper.
Redox mechanism in the binary transition metal phosphide Cu3P
Mauvernay,Doublet,Monconduit
, p. 1252 - 1257 (2006)
The electrochemical behaviour of the binary transition metal phosphide Cu3P towards lithium is investigated through galvano- and potentiostatic measurements. Obtained through high-temperature synthesis, this system shows a better volumetric capacity than graphite and a good capacity retention. In situ X-ray diffraction and first-principles electronic structure calculations are combined with the electrochemical results to show that the complete insertion of 3Li+ in the Cu3P electrode proceeds with the formation of three intermediate phases of lithium composition LixCu(3-x)P (x=1,2,3). The extra capacity previously observed in discharge is now clearly assigned to lithium insertion into the CuP2 impurity and to SEI reactions.
Promotion of the excited electron transfer over MoO3@Cu3P p-n heterojunction for photocatalytic hydrogen production under visible light irradiation
Jin, Zhiliang,Liu, Tianxia,Yang, Kaicheng
, (2021)
In this study, the 0D-Cu3P nanoparticles were successfully anchored on the surface of 2D-MoO3 nanosheets by a one-step calcination strategy for the first time, and a low-cost, excellent performance MoO3@Cu3P photocatalyst was prepared. The unique 0D/2D structure allows Cu3P and MoO3 to be in close contact to provide more active sites, and a p-n heterojunction was established at the metallurgical interface. The existence of built-in electric field in the barrier region erects a fast transfer channel for electrons, which significantly improves transfer kinetics. Additionally, SEM, TEM, UV–vis, XPS, XRD, BET, PL and TRPL were used to study the reasons for the increase in hydrogen production activity and the intrinsic properties of the photocatalyst. Finally, a feasible photocatalytic hydrogen evolution reaction mechanism under dye-sensitized conditions is proposed. Our work has provided motivation for using the earth's abundant transition metal phosphides to design and improve the photocatalytic activity of wide-bandgap semiconductor photocatalysts.
