In this work, three-dimensional flower-like and petal-like copper hydroxyphosphate Cu(OH)(PO) (CHP) based on the self-assembly of numerous nanosheets has been successfully fabricated on a copper foil by a mild one-pot wet-chemical method without ligand assistance. This research contributes to the development of the method to change the morphology of the CHP active material by varying the degree of substrate oxidation. The two different CHP architectures were used to photocatalytically degrade rhodamine 6G (Rh 6G) under solar light, which can absorb wide-range light wavelength from the UV to the near-infrared region. They all exhibit high photocatalytic activity and good durability, which are potential candidates for high performance and recyclable wide wavelength photocatalysis.
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http://dx.doi.org/10.1021/acs.langmuir.7b03157 | DOI Listing |
Adv Sci (Weinh)
September 2021
Solar Fuels Group, Centre for Inorganic and Polymeric Nanomaterials, Department of Chemistry, University of Toronto, Toronto, M5S 3H6, Canada.
Calcium hydroxyphosphate, Ca (PO ) (OH) , is commonly known as hydroxyapatite (HAP). The acidic calcium and basic phosphate/hydroxide sites in HAP can be modified via isomorphous substitution of calcium and/or hydroxide ions to enable a cornucopia of catalyzed reactions. Herein, isomorphic substitution of Ca ions by Cu ions especially at very low levels of exchange created new analogs of molecular surface frustrated Lewis pairs (SFLPs) in Cu Ca (PO ) (OH) , thereby boosting its performance metrics in heterogeneous CO photocatalytic hydrogenation.
View Article and Find Full Text PDFLangmuir
November 2017
Advanced Materials Laboratory & Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
In this work, three-dimensional flower-like and petal-like copper hydroxyphosphate Cu(OH)(PO) (CHP) based on the self-assembly of numerous nanosheets has been successfully fabricated on a copper foil by a mild one-pot wet-chemical method without ligand assistance. This research contributes to the development of the method to change the morphology of the CHP active material by varying the degree of substrate oxidation. The two different CHP architectures were used to photocatalytically degrade rhodamine 6G (Rh 6G) under solar light, which can absorb wide-range light wavelength from the UV to the near-infrared region.
View Article and Find Full Text PDFNanotechnology
January 2015
Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361000, People's Republic of China.
Libethenite Cu2PO4OH nanocrystals with different morphologies were prepared by an ionic liquid-assisted hydrothermal route, and were further investigated as photocatalysts under visible-light irradiation. The Cu2PO4OH elongated truncated bipyramids exposing {100} facets exhibit superior photocatalytic activity compared to other particles, which can be attributed to the presence of 100% Cu5c atoms on {100} facets. It is highly expect this research can provide a useful fundamental understanding of shape-dependent photocatalytic performance of copper hydroxyphosphate.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
September 2014
Geological Institute, Slovak Academy of Sciences, Ďumbierska 1, 97411 Banská Bystrica, Slovakia.
Oriented cornetite [Cu3PO4(OH)3], libethenite [Cu2PO4(OH)] and pseudomalachite [Cu5(PO4)2(OH)4] and non-oriented reichenbachite [Cu5(PO4)2(OH)4] and ludjibaite [Cu5(PO4)2(OH)4] minerals from Ľubietová and Špania Dolina dump fields, Banská Bystrica, Slovakia were examined by polarized Raman spectroscopy. The examined minerals display the characteristic vibrational modes of PO4 and OH groups and further lattice modes. The PO4 stretching and bending vibrations of the investigated minerals occur between 1150 and 900 cm(-1) and between 700 and 350 cm(-1), respectively.
View Article and Find Full Text PDFJ Hazard Mater
August 2010
School of Chemical and Energy Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
Copper hydroxyphosphate was synthesized hydrothermally and characterized by XRD and SEM. The peroxide degradation of azo dye on this material was evaluated by examining initial pH, catalyst loading, H(2)O(2) dosage, initial dye concentration and temperature. Although copper hydroxyphosphate is a low surface area material without micropores or mesopores, it shows considerable activity for oxidative degradation of azo dyes under near-neutral pH conditions.
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