35 Questions 79 Answers 0 Followers
Questions related from Amal Abdelhaleem
Dear All I need to know the exact procedures of Vatting process of vat dyes or any other method to dissolve insoluble form of vat dyes. Many thanks in advance Best regards,
04 August 2022 951 0 View
Dear All I have read that oxo-biodegradable plastic may not biodegrade entirely, thereby causing the formation of microplastics which are non-recyclable. Can anyone confirm this information and...
25 December 2019 245 1 View
Dear All Please, I have an inquiry concerning PMS/dark process for degradation of organic pollutants. I noticed that the PMS/dark process can work for degradation of my pollutant at specific pH...
12 April 2018 8,212 11 View
Dear All I am studying the quenching effect in a system containing SO4 and OH radicals. I want to scavenge Oxygen using a liquid quencher since It will be sophisticated to pump N2 as an oxygen...
08 January 2018 155 6 View
Dear All Please, what is the reason behind the addition of acid during the preparation of Fe-doped TiO2 using impregnation method? I did not add acid during preparation, but the catalyst changes...
16 August 2017 7,492 6 View
Dear All Is it possible to detect pheole, benzoquinone, hydroquinone and chlorophenol in LC-ESI/MS? Regards,
16 October 2016 4,373 2 View
Dear All I tried to dissolve about 0.03 g of ammonium tungstate in a mixture 30 mL of ethanol, 2.3 mL of CH3COOH, 0.74 mL of HCl and 3.5 mL of TBOT by stirring for 2 hrs, but i found that it does...
15 October 2016 895 1 View
Dear All I prepared N doped TiO2 and I found there are two additional peaks showing in XPS analysis at 716 and 836 eV. Please, may you help me to know what are they belonging to? Thanks in...
07 September 2016 4,356 9 View
Dear All I already prepared N doped TiO2 using sol gel technique. Please, may anyone provide with a preparation method to incorporate graphene with a solid catalyst of N doped TiO2? Regards,
20 July 2016 4,289 2 View
Dear All Which pesticide is the easiest for visible light degradation by doped TiO2, Is it Carbofuran or Diphenamid? Regards,
29 June 2016 4,348 3 View
Dear All what is the best method for preservation of a stock solution of 4-chlorophenoxy acetic acid herbicide? and what is the maximum duration for preservation? Regards,
29 April 2016 7,811 0 View
Dear All I use this method to prepare WO3/TiO2 composite: TiO2nanocompositesMesoporous WO3–TiO2nanocomposites were pre-pared via sol-gel process in the presence of F127 triblockcopolymer as...
23 April 2016 7,072 3 View
Dear all Please, May anyone help me with a good method for detecting 2-phenoxy ethanol and 4 chlorophenoxy acetic acid using LC/MS. Regards,
11 April 2016 7,660 8 View
Dear All What is the impact of pumping air bubbles during photocatalysis application using N doped TiO2? I did not pump air bubbles to my sample during the photocatalysis. Is there a big effect on...
09 March 2016 6,908 1 View
Dear All Please, What is the cause of pale yellow color of TiO2 prepared by sol gel ? I prepared it as following: 5 ml Titanium isopropoxide + 50 ml isopropanol and added solution B (10 ml...
03 March 2016 5,208 3 View
Dear All Please, may you help me with the best methods used for preparation of Bi2O3/TiO2 and WO3/TiO2 photocatalysts. Regards,
15 January 2016 824 13 View
Dear All I tried TiO2 (P25)/graphene for degradation of carbofuran, but it decreases the activity. It was not good for my compound. Can you help me if Ag/P25 (TiO2) will work efficiently for...
15 January 2016 3,107 11 View
Dear All I used graphene oxide/P25 to degrade carbofuran pesticide, but the activity of the composite was lower than P25 itself. Please, can you help me to select another photoactive meterial to...
14 January 2016 9,527 3 View
Dear All I use this method to prepare P25/GO: For preparation of TiO2–GO composites, GO powder (25.2, 50,4, 252,or 378mg, which corresponded to GO to TiO2 ratios of 0.01, 0.05, 0.10, or0.15,...
03 January 2016 2,110 0 View
Dear All Please, Can the incomplete binding between P25 (TiO2) and graphene oxide decrease the photocatalytic activity? I prepared P25/GO using colloidal blending method and tried GO from...
30 December 2015 841 4 View
Dear All please, Why P25/GO has a bad dispersion in pollutant than P25. I used both of them for MB removal and i found that P25/GO is not dispersed well in MB, but i just put P25 in MB, it is...
29 December 2015 6,580 2 View
Dear All I prepared P25/GO 0.1 % ratio. When filtrating the solution to get the solid P25/GO 0.1 %, I found that the filterate is white as the titania pass through the filter paper. This is...
18 December 2015 7,996 3 View
Dear All Please, Any one tried to reduce reduce GO/TiO2 to rGO/TiO2 via UV assisted method. I want to use this composite for photocatalytic degradation of organic pollutants. Regards,
16 December 2015 9,875 7 View
Dear All I want to prepare P25/GO composite using colloidal blending method. some papers do ultrasonication for graphite oxide in 30 ml, then dilute it to 230 ml before mixing with P25. Can you...
08 December 2015 9,420 2 View
Dear All I used colloidal blending method to prepare TiO2/GO but when i tested it for my compound, i found that the degrdation of P25 alone is higher than P25/GO. I do not know what is the reason...
04 December 2015 8,952 3 View
Dear All I am using colloidal blending method for preparation of TiO2/Graphene oxide composite, but sometimes I found that some TiO2 pass through the filter paper. I think this is due to bad...
28 November 2015 2,682 6 View
Dear All I used TiO2/GO 5% wt composite to degrade carbofuran at UV 350 nm and the activity of P25 was better than P25/GO 5% wt composite Also I used in visible range and there is no any activity...
23 November 2015 3,290 11 View
Dear AllThanks a lot for your favorable reply. I am using HPLC/UV detector and I use mobile phase of acetonitrile 60 % and Water 40 % and added 1 ml/ L H3PO4 for showing good peak. The final pH of...
11 November 2015 5,408 1 View
Dear All I am working on photocatalytic degradation of carbofuran. Please, what are the best concentrations for preparing standard curve in HPLC? Regards,
09 November 2015 4,145 10 View
Dear All I got one gram of graphene oxide sheet from Abalonyx company for trial. It has this properties: The surface area is theoretically around 2000 m2/g. The material is single layer in very...
05 November 2015 2,969 3 View
Dear All I want any paper about the proposed interactions between TiO2/graphene oxide composites and carbofuran pesticides. Regards
24 October 2015 9,497 1 View
I will work on TiO2/GO composite for photocatalytic degradation of pesticides. Please, What is the best pH for good attraction between TiO2 and graphene oxide?
23 October 2015 3,164 0 View
How Can I dissolve carbofuran in water for preparation of stock solution of 300 mg/L for studying its photocatalytic degradation?, and what is the stability and method of preservation for stock...
22 October 2015 1,414 7 View
Dear All I want to use GO-TiO2 for degradation of pesticide. please, may you help me with an effective method for strong binding between GO-TiO2. Regards,
21 October 2015 246 1 View
Dear All Please, what is the best compound to be used with TiO2 to degrade carbofuran pesticide, Is it graphene oxide or graphene? Regards,
16 October 2015 3,475 4 View
