Samsudeen Olanrewaju Azeez Your question is a little unclear. Are you saying you want a 0.2% loading of Pt on TiO2 (that is, for example, 0.2 g Pt and 99.8 g TiO2 making a total of 100g)? This is a material with potentially catalytic applications (e.g. water splitting). PtCl2 is a really unusual starting point for such materials. Usually chloroplatinic acid (CPA) is the Pt precursor. Nominally this is H2PtCl6.6H2O but it's hygroscopic and one has to be very careful with the weighing. Normally one would make the catalyst and afterward determine the final Pt content by AAS or ICP. A standard route is as follows:

• Determine the pore volume of the dried TiO2 by titration, appropriate porosimetry (was Hg), or BET. I'll use a convenient example of 1 mL/g
• Nominal molecular mass of H2PtCl6.6H2O is 517.9 and the atomic weight of Pt is 195.08. Thus, 517.9 g of the chloroplatinic acid give rise to 195.08 g of Pt in the finished material. If we take the example of making 100 g of the 0.2% catalyst (adapt for your situation) then you'll need [0.2*(517.9/195.08] g of the CPA or ~ 0.53 g and this would be on a support of 99.8 g
• So, to make 100 g of catalyst would involve taking, say, 110 g of TiO2 of known pore volume and drying overnight at, say, 1250C. Carefully weigh out 99.8 g of the dried material and keep in a desiccator. Dissolve 0.53 g of CPA in ~ 100 mL water (pore volume 1 mL/g example) - just saturates the pores - and add to the dried TiO2 thoroughly mixing the system
• Reduce with H2 or dilute (5 or 10%) hydrazine hydrate to produce the Pt. The slurry can then be washed and dried. I prefer these reductants to other materials. I'd avoid borohydride reduction like the plague - contaminates the system with intractable B

If you are really using PtCl2 (molecular mass 265.99 g/mol) or different masses of TiO2 then you can easily adapt the above recipe - 266 g of PtCl2 give rise to 195.1 g of Pt (or you'll need ~ 0.27 g of PtCl2 to make 0.2 g of Pt)... Your major problem here is that PtCl2 is insoluble in water and you'll need to dissolve in dilute HCl. Determine the final/actual metal content by AAS or ICP.