One of my colleague told me to add silver nanoparticles to the soap but vits very very expensive plus not easily available
I believe your colleague is referring to "
colloidal silver". It was very popular for wound healing and to treat infections around the turn of the last century. In the 1940's it was replaced with the discovery of antibiotics. 16 years ago I used it make a mouth rinse to treat periodontal disease. I bought it freshly made from another soaper who lives here in the Denver area.
Colloidal silver is experiencing a comeback currently among those looking for natural alternatives to modern medicine, especially antibiotics. Surprisingly, you can make it at home quite easily and inexpensively. All it takes is a jar of water, a 9-volt battery and a source of silver. A
sterling silver knife, spoon or fork can be used.
Google YouTube for
DIY Colloidal Silver. Here's one video:
You will also need to do a lot of research to learn about its benefits and things to watch out for. It does have a downside! Too much of it causes the skin to turn blue resulting in a condition referred to as "Blue Man" which is irreversible. As long as you are aware of the cautions, proceed with care.
i want to work it as strong antibacterial or antimicrobial
I have never used CS in liquid soap, but essential oils like lavender, tea tree (Australian) and others
are known for their antibacterial properties and I would do the research along those lines if I were to make LS like you want to make.
My advice is to find a well known product for "antibacterial or antimicrobial" liquid soap. Then present the ingredient list on the
Recipe Feedback Forum for help in designing the soap you want to make.
I have used linseed oil to duplicate "
Murphy's Oil Soap" for wood and wood floors. It is processed with methanol (wood alcohol) and, while it is fine for the paint and varnish industry, for skincare you want to use its "twin sister" flaxseed oil which is better for skin -- has a nicer scent too.
Zany's Flaxseed Shampoo 
