I have some hooks that has a glued surfaced attached to it. They look like this,

Image Courtesy: www.dhgate.com
I bought a lot of them. Like 50-60. I used them almost everywhere. Mostly in kitchen. The problem is my kitchen wall is has tiles on it. Its full tiles. After using 2-1 weeks some of them has fallen off the wall. After that each day 1 or 2 hooks fall. Now I have only 2 hooks left there!
2-3 days ago, I bought Silicone Sealant to attach them again. The shopkeeper told its the strongest glue that sticks to glass or tiles. But some how they dont work on my hooks and tile.
Could you tell me what type of glue should I use to stick them on tiles wall? I know the original glue comes with hooks sticks very well on wooden platform. But here my platform is tiles.