I have one question
why my tio2 turned to yellow after annealing process (2h, 600 C, 5 C/min)
the first one is before annealing and the second one after annealing
when I checked with ICP, TiO2 content is >96% by weight.
Can someone explain to me?
@kenneth - TQ for your thought. I also wonder why my TiO2 did not have photocatalytic property after i have done methylene Blue test.
kenneth: i am using Titanium oxysulfate (TiOSO4) as precursor by slow addition of Ammonium hydroxide until white precipitation (metatitanic acid). This is my XRD data. I wonder what other factors that influence tio2 to become photocatalyst active?
Kenneth: well crystallized but still no photocatalytic activity. I dried at 70 C for 12 hours before calcination process .. please do give a suggestion =)
Abdul Razak Mohamed Sikkander
Velammal Engineering College
Nanyang Technological University
University of the West of Scotland
Vishal Mohan Udmale
University of Mumbai
Yasir F Joya
Ghulam Ishaq Khan Institute of Engineering Sciences and Technology
Mohammed Ibrahim Abdalwadoud
King Fahd University of Petroleum and Minerals
SIRIM QAS International Sdn. Bhd.
Eskisehir Osmangazi University
Islamic Azad University, Chalous, Iran