Gibong Yoon

7 Questions 4 Answers 0 Followers

Questions related from Gibong Yoon

Can anyone explain why there are some shere silica?

when i make silica nanowires that zinc oxide covered with TEOS by using sol-gel method there are some zinc oxide@silica nanowires and silica nanospheres. i only want to get zinc oxide@silica...

22 September 2016 5,803 2 View

Can anyone tell me the about lithium ion batteries?

when distances over which lithium ion diffuse are decreased, why lithium ion batteries have high power? can anyone explain how??

29 July 2016 473 5 View

How do i calculate particle size by using debye scherrer equation?

I know this equation. D=Kλ/(β cos θ) , β = FWHM*2π/360 i got this from one of my experiments by data, k= 0.9, λ=0.154nm, θ=7.21, β = FWHM*2π/360=0.1635*2π/360 If these data are right, the...

02 June 2016 8,748 6 View

I want to know when plasticizer added to polymer like PVC, why tg falls?

i want to understand the principle. when plasticizer added to polymer, why tg falls? please let me know?

31 May 2016 8,483 14 View

What is the best etching solution for hydrogen capped with silicon?

I make silicon by magnesiothermic reduction. and I treat HCl to remove impurities. and will use etching solution(HF,nitric acid, etc...) does anyone know best etching solution ratio(ex. WATER :...

24 December 2015 7,416 2 View

Does anyone know how to precipitate silicon nanoparticles from acetone?

I make silicon nanoparticles dispersed in ethanol. the size is 5~10 nm. and i will use capping agent to stop oxidation and to precipitate from acetone. does anyone know how to precipitate SiNP...

18 December 2015 7,434 2 View

Howdo I set up a reaction of (3-aminopropyl)trimethoxysilane as precursor with trisodium citrate dihydrate reducing agent?

Do you know this mechanism? reaction of (3-aminopropyl)trimethoxysilane as precursor with trisodium citrate dihydrate reducing agent?I refer this paper 'Large-scale aqueous synthesis of...

30 October 2015 4,622 1 View