How can I chemically etch a SiO2 nanoparticulate template using a neutral solution rather than HF or NaOH?

16 August 2015 1 937 Report

My SiO2 is loaded with metals (e.g. Co/Ni/Fe) along with carbon. I am looking for a good method which can selectively etch SiO2 and the metals are kept as it is.

Oleg Brylev

The metals you mentioned and carbon are not soluble in NaOH solutions at moderate concentration so you can use them to selectively etch SiO2.

More M. Al-Mamun's questions See All

Do you think can be any Uranium bearing rocks in Eastern part of Iran and western part of Afghanistan?

I want to know more about Uranium ore deposits in world.

11 August 2024 6,720 0 View

Do you think can be any diamond bearing rocks in Eastern part of Iran and western part of Afghanistan?

I want to know more about diamond ore deposits in world.

11 August 2024 2,167 1 View

What is the difference between mathematical R^4 space and physical 4D unit space?

We assume that the difference is huge and that it is not possible to compare the two spaces. The R^4 mathematical space considers time as an external controller and the space itself is immobile in...

10 August 2024 6,678 14 View

If Banks do not provide credit facility, what are the options available for FPOs and impact on producer’s income?

10 August 2024 8,198 5 View

Controlling for pupil light reflex when analyzing pupil size time course?

I used eye tracking to examine how participants from two different populations (A and B) react to an image. Participants in population A exhibit larger pupil sizes over time, but they also have...

10 August 2024 3,229 0 View

What are a “Farmers Producer Organization” (FPO) and its essential features?

10 August 2024 477 5 View

Strugglling with m6A dot blot any suugesstion ?

I have been doing the m6A dot blot for a while with no improvement, I am extracting the RNA, and I can see the dots although the three biological replicas give a different reading on the memberan...

10 August 2024 8,539 5 View

Do interactions between biosphere, carbon cycle, & water cycle impact global warming & interaction between atmosphere & hydrosphere?

How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?

09 August 2024 3,291 2 View

How to get moment output in Abaqus Standart?

I have input a moment load in module load Abaqus, i put my moment load on the node surface (using reference point). I have define moment in history output and make a set for moment too. But the...

08 August 2024 4,831 4 View

How is energy cycled through the Earth's climate system and how do matter cycle and energy flow through the rock cycle?

08 August 2024 8,162 0 View

What is the best method to detect the chemical composition of pollen ?

I have multiple small samples of grass pollen with anthers. I want to find a method to identify concentrations of proteins, lipids, and other various elements for these samples. any suggestions?

28 July 2024 5,331 1 View

Hi dear researchers, do you suggest the best and shortest path for chemical synthesis and green synthesis of magnetite(Fe3O4)?

Suggest the best and shortest route for the chemical synthesis and and green synthesis of magnetite(Fe3O4) The chemical synthesis should contain the least dangerous chemicals along with full...

21 July 2024 2,476 2 View

Why do fish have fishy odors naturally ?

Chemical Engineering /Food Engineering

20 July 2024 4,152 4 View

What should be consider when do CVD?

I'm trying to create a new substance. Are there any important considerations when fabricating with CVD? For example, lattice constant If you have any such considerations, please let me know.

15 July 2024 9,359 0 View

Is there any possible explanation for the statement written below?

Low magenic concenrartion indicating enhanced chemical weathering associated with warm and wet climate in detrital sediments.

14 July 2024 1,381 4 View

Is there an explanation of why a negative photoresist take-off after contact with ferric chloride (like in the pictures) ?

Deep etching Negative photoresist Acrylate polymer Chemical etching Ferric chloride Crosslinking Resolution

11 July 2024 2,476 4 View

NH3/NF3/H2 Remote plasma Oxi/nit selective etching mechanism help ??

Hello, I am an Etch Engineer. I am performing etching with high T_ox/Nit selectivity using remote plasma. Etching plasma is formed using only NH3/NF3/H2. 1. I wonder if it would be advantageous...

11 July 2024 8,115 2 View

How to remove DDQ from bodipy reaction only possible colmun chomatography tecnique use here ?

bodipy moiety are high polar nature .so its are bottom of TLC PALTE up to 20;80(ethyl acetate;hexane) mixture so its binding in SiO2 SO YIELD is so decreased. how to remove DDQ from reaction mixture?

02 July 2024 8,846 4 View

How to calculate the proportions in grams or milliliters of the compounds for 60 mL of SAPO-11 zeolite precursor gel?

It is required to make a precursor gel for a SAPO-11 Zeolite, the compounds are the following: * As a source of Al: Aluminum Isopropoxide (98%) Formula: C9 H21 O3 Al PM: 204.24 g/mol Density:...

01 July 2024 617 3 View

Could anyone recommend software for drawing the physical structure of nanoparticles?

I am looking for professional software to draw the physical structure of nanoparticles or vesicles, not the chemical structures for which we use ChemDraw, but the actual physical structures,...

23 June 2024 1,292 3 View