What is the possible mechanism for PMS activation under dark with NaoH at pH=10?

Dear All I found that my pollutant can be degraded at pH=10 (pH adjusted by NaOH) under PMS/dark process. Please, what are the possible reasons to justify this phenomenon. Apart from base...

03 April 2018 6,231 4 View

Are there any compounds that can cause activation of sole H2O2 under visible light?

Dear All Please, are there any compounds that cause activation of sole H2O2 under visible light?

10 November 2017 6,698 2 View

What is the reason for the low activity of Fe(III) impregnated TiO2 compared to sole TiO2 under visible light?

Dear All Please, What is the reason for the low activity of Fe(III) impregnated TiO2 compared to sole TiO2 under visible light. Although the Fe(III) impregnated TiO2 led to a high shift in the...

09 October 2017 3,353 0 View

Why the acid is added during preparation of Fe-doped TiO2 using impregnation method?

07 August 2017 2,018 6 View

What is the reason for activation of metal free catalysts in the presence of Peroxymonosulfate at alkaline pH 9.3?

Dear All What are the possible reasons for activation of metal free catalysts in the presence of PMS at alkaline pH 9.3. Although the catalyst will be negatively charged and the pollutant is...

02 March 2017 9,014 5 View

How to synthesize MnFe2O4/N doped TiO2 using sonochemical method?

11 December 2016 9,024 0 View

How to synthesize MnFe2O4/N doped TiO2 Core shell using sol gel method?

10 November 2016 5,950 0 View

Can I measure sulfate radicals using dimethyl sulfoxide ?

10 November 2016 299 5 View

How to dissolve ammonium tungstate in sol gel method?

09 October 2016 7,618 1 View

What is the concentration of salisylic acid for hydroxyl radicals measurement?

Dear All Please, i want to measure hydroxyl radicals generated during photocatalytic reaction using salicylic acid. Please, what is the suitable concentration of salisylic or it depends on the...

09 October 2016 4,330 1 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

RNA degraded after good nanodrop readings?

23 February 2021 8,850 2 View