The following books are very good for Nanotechnology,

1. Introduction to nanoscience and nanotechnology by Gábor Louis Hornyak, Harry F. Tibbals, Joydeep Dutta, CRC Press, 2009.

2. Nanoscale Science and Technology Edited by R. W. Kelsall, I. W. Hamley and M. Geoghegan, 2005 John Wiley & Sons, Ltd.

I reccomand You Encyclopedia of Nanoscience and Nanotechnology, where you have an overview of all the known nanomaterials:

http://www.aspbs.com/enn/

Thank you Praveennath and Wojciech stepniowski. Thank you very much

Are You interested specifically in a certain kind of nanomaterials? for example, I'm fabricating nanoporous arrays via anodization and in this field I can also advice "Nanostructured materials in electrochemistry":

http://onlinelibrary.wiley.com/book/10.1002/9783527621507

@ Wojcieh stepniowski I am doing TiO2 Nano particals for photo catalytic degradation of pesticides. But One of my course is advanced Nano technology. So for this I am collecting book.

I see. You need I kind of book where You can find general information about nanotechnology: phenomena, like quantum confinement, materials etc. And in a shorter way. So I advice You: "Springer Handbook of Nanotechnology " by Bhushan.

And here is the content of the book:

http://www.google.pl/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CCwQFjAB&url=http%3A%2F%2Fwww.springer.com%2Fcda%2Fcontent%2Fdocument%2Fcda_downloaddocument%2FBhushan%2Bfront-matter.pdf%3FSGWID%3D0-0-45-933837-p173946710&ei=tsyYUMrZJYOl0AX19YDwCA&usg=AFQjCNGnroW76AgTwkXP9Lrzd84uGUEwXQ&sig2=unPn8wYsq7DVIiHiZCkuHQ

@Wojciech, Thank you Wojciech stepniowski. I will read that book. Thank you

You welcome. I'm glad I could be helpfull.