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Forum index » Science and Technology » Chem » Analytical
TiO2 content determination
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pakaque
science forum beginner


Joined: 27 Apr 2005
Posts: 9

PostPosted: Wed May 31, 2006 5:55 am    Post subject: TiO2 content determination Reply with quote

i have a 2 different samples of titanium dioxide loaded onto quartz
sand support.the first sample's TiO2 comes from powdered Degussa P25
and the other comes from sol-gel synthesis.attachment of the TiO2 to
the quartz sand support was done via heat treatment in furnace at 600
degrees C. my question is..how do i measure the content of TiO2 loaded
on the quartz sand.weighing before and after tio2 attachment does not
give accurate result as the tio2 content on the support is too small,
thus producing error when weighing. is there any other method? is it
possible to do spectrophotometric analysis? if possible, how do i do
it? is there any standard method? thanks for any reply. really
appreciate it
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Beda
science forum beginner


Joined: 24 Feb 2006
Posts: 7

PostPosted: Wed May 31, 2006 9:59 am    Post subject: Re: TiO2 content determination Reply with quote

I don't know how u cover your sample (dip-spin coating).
I used a profilometer Talystep II, taylor hobson.
On the board u can measure the size-level of the depth thanks to a
diamond tip on the head of the profilometer.
don't know with spettrophotometric methods. I think they gve other
infoes

bye

andrew


rentabau wrote:
Quote:
i have a 2 different samples of titanium dioxide loaded onto quartz
sand support.the first sample's TiO2 comes from powdered Degussa P25
and the other comes from sol-gel synthesis.attachment of the TiO2 to
the quartz sand support was done via heat treatment in furnace at 600
degrees C. my question is..how do i measure the content of TiO2 loaded
on the quartz sand.weighing before and after tio2 attachment does not
give accurate result as the tio2 content on the support is too small,
thus producing error when weighing. is there any other method? is it
possible to do spectrophotometric analysis? if possible, how do i do
it? is there any standard method? thanks for any reply. really
appreciate it
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Unknown
science forum beginner


Joined: 30 May 2005
Posts: 11

PostPosted: Wed May 31, 2006 11:33 am    Post subject: Re: TiO2 content determination Reply with quote

On 30 May 2006 22:55:06 -0700, "rentabau" <pakaque@gmail.com> wrote:

Quote:
,;i have a 2 different samples of titanium dioxide loaded onto quartz
,;sand support.the first sample's TiO2 comes from powdered Degussa P25
,;and the other comes from sol-gel synthesis.attachment of the TiO2 to
,;the quartz sand support was done via heat treatment in furnace at 600
,;degrees C. my question is..how do i measure the content of TiO2 loaded
,;on the quartz sand.weighing before and after tio2 attachment does not
,;give accurate result as the tio2 content on the support is too small,
,;thus producing error when weighing. is there any other method? is it
,;possible to do spectrophotometric analysis? if possible, how do i do
,;it? is there any standard method? thanks for any reply. really
,;appreciate it

Dissolve TiO2 and determine colorimetrically with hydrogen peroxide.
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pakaque
science forum beginner


Joined: 27 Apr 2005
Posts: 9

PostPosted: Wed May 31, 2006 10:30 pm    Post subject: Re: TiO2 content determination Reply with quote

Unknown wrote:
Quote:
On 30 May 2006 22:55:06 -0700, "rentabau" <pakaque@gmail.com> wrote:

,;i have a 2 different samples of titanium dioxide loaded onto quartz
,;sand support.the first sample's TiO2 comes from powdered Degussa P25
,;and the other comes from sol-gel synthesis.attachment of the TiO2 to
,;the quartz sand support was done via heat treatment in furnace at 600
,;degrees C. my question is..how do i measure the content of TiO2 loaded
,;on the quartz sand.weighing before and after tio2 attachment does not
,;give accurate result as the tio2 content on the support is too small,
,;thus producing error when weighing. is there any other method? is it
,;possible to do spectrophotometric analysis? if possible, how do i do
,;it? is there any standard method? thanks for any reply. really
,;appreciate it

Dissolve TiO2 and determine colorimetrically with hydrogen peroxide.

thank you for your kind response.forgive me for asking this silly
question since i'm not a chemist myself. but how do i determine
'colorimetrically'? i'd be most grateful if you can provide me with
reference to this method. thanks again.
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Farooq W
science forum Guru Wannabe


Joined: 25 Mar 2005
Posts: 240

PostPosted: Thu Jun 01, 2006 3:07 am    Post subject: Re: TiO2 content determination Reply with quote

rentabau wrote:
Quote:
Unknown wrote:
On 30 May 2006 22:55:06 -0700, "rentabau" <pakaque@gmail.com> wrote:

,;i have a 2 different samples of titanium dioxide loaded onto quartz
,;sand support.the first sample's TiO2 comes from powdered Degussa P25
,;and the other comes from sol-gel synthesis.attachment of the TiO2 to
,;the quartz sand support was done via heat treatment in furnace at 600
,;degrees C. my question is..how do i measure the content of TiO2 loaded
,;on the quartz sand.weighing before and after tio2 attachment does not
,;give accurate result as the tio2 content on the support is too small,
,;thus producing error when weighing. is there any other method? is it
,;possible to do spectrophotometric analysis? if possible, how do i do
,;it? is there any standard method? thanks for any reply. really
,;appreciate it

Dissolve TiO2 and determine colorimetrically with hydrogen peroxide.

thank you for your kind response.forgive me for asking this silly
question since i'm not a chemist myself. but how do i determine
'colorimetrically'?

Read it as "spectrophotometric analysis"

Quote:
i'd be most grateful if you can provide me with
reference to this method. thanks again.

See the link for an idea, quite the same, but they have used hydorgen
peroxide as the analyte using titanium as a reagent (you can try the
other way round)

http://www.solvaychemicals.us/pdf/Hydrogen_Peroxide/HH-118.pdf
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pakaque
science forum beginner


Joined: 27 Apr 2005
Posts: 9

PostPosted: Thu Jun 01, 2006 9:58 am    Post subject: Re: TiO2 content determination Reply with quote

Farooq W wrote:
Quote:
rentabau wrote:
Unknown wrote:
On 30 May 2006 22:55:06 -0700, "rentabau" <pakaque@gmail.com> wrote:

,;i have a 2 different samples of titanium dioxide loaded onto quartz
,;sand support.the first sample's TiO2 comes from powdered Degussa P25
,;and the other comes from sol-gel synthesis.attachment of the TiO2 to
,;the quartz sand support was done via heat treatment in furnace at 600
,;degrees C. my question is..how do i measure the content of TiO2 loaded
,;on the quartz sand.weighing before and after tio2 attachment does not
,;give accurate result as the tio2 content on the support is too small,
,;thus producing error when weighing. is there any other method? is it
,;possible to do spectrophotometric analysis? if possible, how do i do
,;it? is there any standard method? thanks for any reply. really
,;appreciate it

Dissolve TiO2 and determine colorimetrically with hydrogen peroxide.

thank you for your kind response.forgive me for asking this silly
question since i'm not a chemist myself. but how do i determine
'colorimetrically'?

Read it as "spectrophotometric analysis"

i'd be most grateful if you can provide me with
reference to this method. thanks again.

See the link for an idea, quite the same, but they have used hydorgen
peroxide as the analyte using titanium as a reagent (you can try the
other way round)

http://www.solvaychemicals.us/pdf/Hydrogen_Peroxide/HH-118.pdf

thank you very much for the reference. i was wondering how do i prepare
Titanium calibration curve instead of the hydrogen peroxide calibration
curve shown. is there pure titanium solution? what i currently have is
titanium (iv) isopropoxide. can i use that instead for the calibration
curve?
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