Experimental and computational study of visible light-induced photocatalytic ability of nitrogen ions-implanted TiO
2
nanotubes
Zhang Ruijing
1
, Liu Xiaoli
1
, Hou Xinggang
1, †
, Liao Bin
2, ‡
The optical absorption of TiO
2
and I–N-doped TiO
2
and S–N-doped TiO
2
.