Brandon Chen

6 Questions 1 Answers 0 Followers

Questions related from Brandon Chen

What exactly does "adjusting 8mM Ammonium Chloride" to solutions of pH of 9 and 10 mean?

From what I can interpret, it means making a 8mM Ammonium chloride stock solution using Deionized water, then gradually adding ammonium hydroxide (28%, 14M) until the pH meter reads 9 or 10 pH. Is...

30 June 2017 2,568 2 View

How to transfer suspension of Silica NP from ethanol into water?

Is there a method for transferring dispersed primary(~20nm) silica nanoparticles (NP) from ethanol to water without significant aggregation? If you happen to know a dispersed silica...

04 May 2017 8,677 3 View

What are some filtering methods for sub 100nm nanoparticles?

What are practical bulk filtration methods for suspended nanoparticles under 100nm, preferably under 20 nm? By bulk, i mean filtering more than 1 ml at a time. Glass filters I have seen are mainly...

04 May 2017 446 4 View

How to prepare Silica NP for SEM imaging?

I'm trying to image silica nanoparticles with a Scanning Electron Microscope. I think SEM samples are required to be conductive or sputter coated with a conductive layer of gold, but I'm not sure...

05 March 2017 3,801 3 View

What is the mechanism of nonstick ceramic cookware?

Ceramic cookware are all the latest craze in regards to safe cookware. However, they tend to lose their non stick properties within a year or so. From what I can understand, the nonstick property...

25 January 2017 2,653 3 View

What mixing methods reduce nanoparticle agglomeration?

I'm attempting to homogeneously mix silica nano-particles in the range of 10nm within a silica gel. However, the silica particles tend to agglomerate into clusters of 100 nm and greater in size,...

16 December 2016 6,009 6 View