Change of intensity with doping?

Dear Researchers, I have my samples SnO2 doped with with Cu (1, 2, & 4%). The peak intensity reduces in XRD for 1 and 2%. However, for 4% additional peaks appears which I believe is due to...

05 June 2019 4,806 3 View

CNT-metal oxide combo?

Dear Researchers, Since CNT is not soluble in standard solvents like DI water, ethanol etc, how do I make a doping/composite of CNT and metal oxide. Your suggestions will be highly appreciated....

05 June 2019 6,386 2 View

How to measure the amount of sample (quantum dots) in a solvent?

I have quantum dots dispersed a solvent. If I am considering 2 ml of the solvent, then how do I find out how much is the amount of sample in that solvent? I tried drying the sample to obtain...

03 April 2019 4,333 8 View

SAED Image analysis?

Dear Sir/Mam, Considering the scale, we measure the distance between the centre and the bright spot of the diffraction pattern. This should tally with the reciprocal of the d-spacing and the...

07 August 2018 3,371 2 View

High temperature hydrothermal reactor?

Kindly let me know the details along with an image of a high temperature hydrothermal reactor operating at 400c to 500c. Thanks and regards

06 July 2018 5,765 3 View

Measurement of Size of Quantum dots?

Dear Sir/Mam, I have synthesized some quantum dots suspended in solvent (DI water) . I am interested in finding the size of those dots. One way would be offcourse HRTEM. But I am interested in...

05 June 2018 8,740 3 View

Synthesis of Graphene Oxide - not by Hummers method?

I am interested in synthesizing Graphene Oxide but not by Hummers method. If any one can suggest from his/her expertise. Also, does other method or even Hummer method ensure a good quality. Also...

05 June 2018 2,962 0 View

Screen printers and gas sensing setup?

Dear Sir/Mam/Colleague, What kind of Screen Printers do I use to deposit thin films? If possible provide me with a link of the description of the instrument. Also, what will be the approximate...

09 October 2017 9,136 0 View

Writing a project?

I worked on metal oxides and its application for gas sensors. Now I intend to write a project, and found Bio-sensors (using metal oxide) as a very interesting project. My doubt lies, whether the...

07 August 2017 5,478 0 View

Synthesis of SnS3?

What are the possible ways to synthesize doped SnS3 by simple chemical synthesis without use of hydrothermal reactor. By ways I mean what kind of chemicals. (An acetate or a chloride compound...

01 February 2017 2,224 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

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 5 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 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

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

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

How to reduce static electricity of powder after lyophilization?

I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...

22 February 2021 10,099 5 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

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22 February 2021 9,932 11 View