Pengpeng Qiu

6 Questions 12 Answers 0 Followers

Questions related from Pengpeng Qiu

Why TiO2 (001) surface will be exposed after the treatment by using fluoride based chemicals?

There are a lot papers about the expose of TiO2 (001) surface by using fluoride based chemicals. What kinds of mechinism is there. And what is the advantage by exposing 001 surface

30 May 2017 5,647 1 View

How many cavitation bubbles can be generated in one second in sonolysis?

Who knows the number of cavitation bubbles that can be generated in one second when applying ultrasound. Is there exact data? or order?

20 July 2016 9,068 1 View

Is there any rare earth metal based upconversion material that can upconvert visible light to UV light ?

Does anyone know a rare earth metal based material can upconvert visible light to UV light.

03 June 2015 435 4 View

Can Er doped LiYF4 or NaYF4 adsorb visible light (522 nm) and emit UV light (381, 409, 452 nm)?

I have read a paper "Visible-to-UV/Violet Upconversion Dynamics in Er 3+ -DopedOxyfl uoride Nanoscale Glass Ceramics". It is said this material can upconvert visible light to UV light. However,...

03 June 2015 4,001 3 View

Why there is a small peak (5.1000 ) around BPA peak (4.796) in my HPLC chromatogram for bisphenol-A (BPA)?

i have used HPLC to measure the bisphenol-A (BPA), The condition i used is as follows: Columnn: Eclipse XDB C18 4.6 *100 mm, 5 um. Mobile phase: A 60% ACN; B ACN, Temp. 40 degree C. In the...

01 April 2015 8,911 10 View

Does anyone have experience Bisphenol-A analysis?

Who has experience to analyze BPA by using HPLC. Could someone provide me a method to analyze it?

09 August 2014 3,405 7 View