CV vertex current is increasing and peak is shifting? Any good reference pointing those issues with dicussion?

Hello, I am looking for some good references that are mentioning/discussing/resoning the shifting of oxidation and reduction peaks as well as describing the reason of increasing the vertex current...

03 April 2019 7,534 4 View

Electrolysis using Ti electrode? better or bad?

Hello all, I am using a nano-indention device (JKR) to check adhesion capability of polymer gel under electric condition. I place two electrode on top of my sample. one electrode is indention stem...

02 March 2019 6,910 2 View

Electrical conductivity and resistivity of graphene?

Hello, I was looking for a electrical conductivity and resistivity value of graphene sheet but could not find any. Most of the info says it is superconductive without any value. Will be happy to...

31 December 2018 6,856 4 View

Why N-Acetyldopamine is giving 2 oxidation and reduction peaks?

Hello I was checking the peak of N-Acetyl dopamine using cyclic voltammerty. The electrolyte was pH 7.4 tris buffer. N-acetyle dopamine was diluted in buffer. reference electrode ag/agcl, working...

09 October 2018 9,054 0 View

How to measure PPM from the Concentration?

Hello, I am trying to measure Acetone exposure amount to the sensor. I used to blow air through acetone and pass the air into a flowmeter which gives reading in cc/Min. and then the output air...

31 December 2016 490 5 View

How to make SnO2 and TiO2 nanocomposite paste?

09 October 2016 556 5 View

ATR-FTIR of solvent exposing on graphene! IS my interpretation ok? need suggestion?

Hello I was trying to find difference between solvent exposure on graphene. I added a picture here. Is my interpretation ok about the bonding? though all the curve looks like same except the...

07 August 2016 7,627 5 View

Raman Peak undefined?

06 July 2016 5,190 9 View

Attenuted Total reflactance dip at 2400 cm-1. need explanation?

Hello Everyone, I am making some grapheme film, and exposing it to different gases. After that I am doing ATR(Attenuated Total reflectance) to see the effect. The problem is When I am exposing to...

06 July 2016 5,800 5 View

Platinum coated titanium ball/electrode

Hello, I am looking for some platinum ball of 1/4 inch diameter, or platinum coated titanium ball of 1/4 inch. If anyone has idea about any sources, vendors or manufacturers info, or even if...

01 January 1970 8,667 0 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 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

To date, according to health authorities, 30% of the population's diseases are initiated by drinking water pollution. Do you know this problem?

The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...

23 February 2021 912 5 View

Thermal reduction of graphene oxide.?

I am trying to reduce graphene oxide by thermally but I have no proper information regarding this. Can any one help me regarding the details about temperature and time for the reduction of...

23 February 2021 4,155 4 View

Multinomial probabilities and confidence intervals - obtaining the CI of the reference category?

Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...

22 February 2021 2,541 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