I want to know about the mechanism of hydrothermal process of Bivo4,I mean what happened in process of formation bivo4 from bi(no3)2.5H2o and Nh4vo3?(also role of vapor pressure which is in autoclave meanwhile hydrothermal process)
you can get suitable information regarding your question in the following article :
"Rationally engineered BiVO4 micro-leaves as a bifunctional photocatalyst for highly durable solar water treatment and water splitting - ScienceDirect"
I hope this will help in your work. Good luck with your research !!