| Kaolin | Metakaolin coated with titanium | Zeolite incorporated with titanium | Zeolite incorporated with titanium and silver |
| 1112sh, Si–O | 1088s, Si–O | 997s, Si–O(Si), and Si–O(Al) | 1030b, Si–O(Si), and Si–O(Al) | 1091s, Si–O | 794m, Al–O | 686m, Si–O–Si, and Anatase | 692m, Si–O–Si, and Anatase | 1065s, Si–O | 691w, Anatase | 547m, Si–O–Si, and O–Si–O | 606m, Si–O–Si, and O–Si–O | 1022s, Si–O | 463sh, Anatase | 460m, O–Si–O, and Anatase | 465m, O–Si–O, and Anatase | 794w, Si–O–Si | 794sh, Si–O–Si | 3421vb, O–H | 3441s, O–H | 530m, AlVI–O | 530sh, AlVI–O | 1652m, O–H | 1633m, O–H | 467m, Si–O | | | | 442sh, Si–O | | | |
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