Hierarchical flower-like titanium phosphate derived from H-titanate nanotubes for photocatalysis

Abstract

Nanosheet-assembled hierarchical flower-like titanium phosphate (TiP) is synthesized via hydrothermal treatment of H-titanate nanotubes (Ti-NT) at the optimized conditions of 0.1 M of H 3 PO 4 and hydrothermal temperature of 130°C. A possible formation mechanism for the TiP flowers, involving the disintegration of Ti-NT and the growth and assembling of TiP nanosheets, is proposed. The main compositions of the uncalcined TiP flowers are titanium hydrogen phosphate hydrates (Ti(HPO 4 ) 2 ÁxH 2 O), which can be transformed to titanium phosphate (TiP 2 O 7 ) after high temperature calcination. The photocatalytic activity of the prepared TiP flowers is increased with the increased calcination temperature, which may be attributed to the better photocatalytic activity of TiP 2 O 7 than Ti(HPO 4 ) 2 ÁxH 2 O and the increased crystallization of TiP 2 O 7 .

Bismuth oxychloride modified titanium phosphate nanoplates: A new p-n type heterostructured photocatalyst with high activity for the degradation of different kinds of organic pollutants

“…Recently, phosphate based composite materials become one of research hotspots because of their special open framework structure [4]. Especially, the n-type titanium phosphate has received extensive attentions because of its high photooxidation and photoreduction capability, non-toxicity, good chemical stability, and low fabrication cost [5][6][7][8][9][10][11][12][13]. However, easy recombination of photoinduced electron-hole pairs still existing in the photocatalysis process of titanium phosphate, which leads to its low quantum yields [14].…”

Highly Acidic, Thermal Stable NbPO4@Fullerene Catalyst for Dehydration of Cyclohexanol

“…The pore size of the catalysts increases with increase in concentration of phosphorous. The FESEM image for Nb1P3 shown in Figure (a) represents flower like morphology …”

Organic–Inorganic Hybrid Metal Phosphonates as Recyclable Heterogeneous Catalysts

“…This can be overcome by making the hybrid metal phosphonate network by using bridging organophosphorous coupling agents. Further, porous titanium(IV) phosphonate materials of different structures have been utilized over the years in heterogeneous catalysis, adsorption of metal ions, proton conduction, photodecomposition of organic dyes, etc. Recently, titanium phosphate material MTiP‐1 has been synthesized through the evaporation‐induced self‐assembly method .…”