assume 1mol% NH3 in TiO2

1 mol NH3 in 100 g TiO2

Molecular Weight of NH3 17 g

1 mol of N2= 14 g ;

for obtaining 1mol% N2, your mixture should contain 17 g NH3 in 100 g TiO2.

Yes, now depending on what percent of doping you are looking for you can just calculate the mol% from the molecular weight.

Deepa Remadevi

Do you wish to synthesize various weight% or mol% of N doped TiO2? Calculations will be different for both

2% N doped means the % for TiO2 is 98%, to get 2%N from ammonia the mass ratio of ammonia to that of TiO2 need to be 2.43:98 ( 1: 40.4). For example if you add 1 g of ammonia into 40.4 g TiO2, you will get 2% N doped in TiO2.

@ Aarif Shah

Thank you

i want to calculate the mol% N doped in TiO2. How it can be done..please clarify

@ Aarif Shah

Thank you

i want to calculate the mol% N doped in TiO2. How it can be done..please clarify

Please note the following equation:

1. mole of N= mass of N used/molar mass of N, the same is true for TiO2

2. mole % of N = mole of N/ (mole of N + mole of TiO2) *100%

3. in the previous example assume 2 g N added to 98 gTiO2, and do the calculation, you will get 10.4% N mole and 89.6 % TiO2 mole.

Deepa Remadevi

I presume that you intend to make 2 mol % N doped TiO2. For that you need to first calculate how much NH3 will yield 2 mol % N. once you calculate that, then calculate how much TiO2 you need to add to get the required mol% N doping. Are you using dry nano-powder of TiO2 or you will use some precursor like titanium isopropoxide or butoxide?

@ Aarif Shah

thank you for your kind response

I am using Titanium isopropoxide as precursor for preparing TiO2 and i am trying to give dope 2 mol % N doping by adding aqueous NH3 solution . Then how could i get 2 mol % N doping