Synthesis of mesoporous chromium phosphatesvia solid-state reaction at low temperature

A Review on the Synthesis and Applications of Mesostructured Transition Metal Phosphates

“…The as-synthesized material exhibits a relatively high specific surface area of 384 m 2 /g and a narrow pore size distribution centered at 3.6 nm, but no apparent structural patterns can be identified from TEM observations. Ball milling of CrCl 3 ·6H 2 O + NaH 2 PO 4 ·2H 2 O + CTAB, followed by template removal with calcination in N 2 at 823 K, can produce mesoporous CrP with banger-like pore geometry (Figure 7a) [99]. The mesoporous CrP possessed a specific surface area as high as 250 m 2 /g.…”

“…The mesoporous CrP possessed a specific surface area as high as 250 m 2 /g. When used in the dehydration of isopropanol to propene, these catalysts exhibited significantly higher isopropanol conversions and propene yields than those synthesized via the solution sol-gel route and the non-mesoporous chromium phosphate [99]. …”

“…( a ) Less ordered mesoporous chromium phosphate (CrP) prepared by ball milling (reprinted with permission from [99]. Copyright 2012 Royal Society of Chemistry); ( b ) Zinc phosphate (ZnP) nanoparticles synthesized by bio-assembly (reprinted with permission from [103].…”

Cs2Zn5(PO4)4 and Cs3La(PO4)2: Two Cs‐Containing Phosphates with Three‐Dimensional Frameworks

“…Referring to the literature, the free PO 4 3– group has four vibration modes: symmetric stretching mode ( ν 1 ), symmetric bending mode ( ν 2 ), asymmetric stretching mode ( ν 3 ) and asymmetric bending mode ( ν 4 ) . The absorption peaks range from 1100–1000, 980–940, 660–500, 480–400 cm –1 in Cs 2 Zn 5 (PO 4 ) 4 and 1100–1000, 900, 580–540, 490–400 in Cs 3 La(PO 4 ) 2 , which are attributed to ν 3 , ν 1 , ν 4 and ν 2 , respectively . The UV/Vis‐NIR diffuse reflectance spectra of Cs 2 Zn 5 (PO 4 ) 4 and Cs 3 La(PO 4 ) 2 are shown in Figure c and Figure d.…”

A binder-free facile synthetic approach for amorphous, hydrous nickel copper phosphate thin film electrode preparation and its application as a highly stable cathode for hybrid asymmetric supercapacitors

“…To date, various processing techniques have been used for the synthesis of metal phosphates, such as hydrothermal, 34,35 co-precipitation, 36 solid-state reaction, 37 and various other methods. 38,39 However, these methods include post-annealing treatment, high temperatures, toxic gases, and time-consuming reaction, which altogether hinder their commercialization in the real world.…”