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Metal Recipes

Post your successful (or not so successful) metal salt solutions here

Barium?

Submitted by maa10 on Thu, 07/15/2010 - 12:10

Does anyone have a suggestions for making .35M Ba(NO3)2?
It is precipitating out for us. And it seems that we can only make 0.05M with H20

Thanks,
Michael Albano
Albion College

Anhydrous or hydrated?

Submitted by ashlray on Tue, 06/22/2010 - 15:51

I am coming up with some metal combinations to test and I am needing to order some metal nitrates. Should I be ordering the anhydrous forms of the metal nitrates or the hydrated forms?

V, W, or Bi recipes?

Submitted by sberglund on Tue, 02/16/2010 - 20:39

Has anyone successfully made printable solutions using V, W, or Bi? We just attempted to make some 0.35 M metal / 0.6 M ammonium nitrate / 0.015 M nitric acid solutions. Each solution precipitated very badly. For V we used ammonium vanadium oxide [NH4VO3]. For W we used ammonium tungsten pentahydrate [(NH4)10W12O41•5H2O]. For Bi we used Bismuth(III) nitrate hydrate [Bi(NO3)3•xH2O].

I read a post saying that Bi can be dissolved by using more acid. Anyone know how strong of an acid (pH level) is acceptable for the HP printer?

use of NH4NO3?

Submitted by elynna youm on Mon, 02/15/2010 - 14:51

NH4NO3 was said to be used with making the metal-nitrate solutions, but Billy and I did not use NH4NO3 in our solutions. We were wondering what the exact purpose of NH4NO3 is.

Tungsten recipes, anyone?

Submitted by billyjmc on Mon, 10/19/2009 - 11:09

Hello all,

I'm wanting to use tungsten in some experiments, but so far the best precursor I can find is ammonium metatungstate, which would work fine, but apparently, nobody knows how hydrated these polytungstates are, so I can't readily make a precise molar solution. Some sources sell specific hydrates, but only when purchasing the 99.9+% purity sources, which I'm trying to avoid due to higher associated cost.

Precursor Solutions

Submitted by saradabheemineni on Thu, 07/30/2009 - 03:20

Hi,
I was a bit confused in trying to prepare the metal precursor solutions after reading the manual. The instructions say "Create a 0.35 M solution of the desired metal nitrate salt with 0.6 M of ammonium nitrate and 0.015 M of nitric acid with the solvent being water."

Here, are we preparing 3 solutions, or 2 (or 1?) My instinct says that 3 separate solutions should be prepared, but some clarification would be helpful.

Also, is there a heating process after printing on the substrates before experimentation? Or is the substrate just left out to dry?

Thanks!
Sarada

TiO2 precusor

Submitted by Cam on Thu, 03/19/2009 - 19:48

Are there any good precursors for making a TiO2 film? I saw that some experiments had been done with Ti, so I was wondering what reagent to use.

How much ink base?

Submitted by craymond on Thu, 10/02/2008 - 15:49

I found the information in the on-line version in the printing basics section.

We're getting ready to make our first prints and we can't find any information on the amount of ink base to use or a final pH of solution to hit. We know 0.5 M M+(aq) but are missing the rest of the information. Any thoughts?

Thanks,
Casey-Oswego

CsNO3 solubility

Submitted by Cam on Tue, 09/30/2008 - 14:41

I want to use Cesium in my experiment but I can't get the CsNO3 to dissolve in the pH5 ink base to .5M. Has anyone else encountered solubility problems? If I decrease the pH of solution to promote solubility will it damage the print head?

General Instructions

Submitted by gophysics on Thu, 07/24/2008 - 13:24

Hi! Can anyone provide general instructions for making the metal salt solutions (i.e. create a 0.5 M solution of your desired metal nitrate) ... or at least specific ones for making the internal standards (0.5 M Copper nitrate and 0.5 M Iron nitrate). I'm a physics teacher, so my knowledge of such things is somewhat limited.
Thanks,
Kristen