Figure 3.

XRD patterns of hydrothermally synthesized TiO2 products in different HCl solutions. a 0.1 M b 0.5 M c 1 M d 2 M e 3 M f 4 M g 5 M h 6 M i 7 M j 8 M

Dai et al. Nanoscale Research Letters 2010 5:1829-1835   doi:10.1007/s11671-010-9720-0