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(Berkeley Lab)   Once your titanium dioxide nanoparticles go black, they nev... er, I mean, you get more hydrogen, or something   (newscenter.lbl.gov) divider line 21
    More: Spiffy, hydrogen, titanium dioxides, titanium dioxide nanoparticles, Berkeley, philosophy of science, source of energy, transformations, University of California at Berkeley  
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3128 clicks; posted to Geek » on 14 Apr 2013 at 7:07 AM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-04-14 07:32:40 AM  
So, they did this in a laboratory. I think TiO2 is pretty cheap, but what would this cost on a production scale? And what other resources and energy inputs are needed? Lots more questions to answer before we get to calling this a cure for energy issues.
 
2013-04-14 07:48:57 AM  
Nanoparticles are banned in california because they cause cancer.
 
2013-04-14 07:56:00 AM  

prjindigo: Nanoparticles are banned in california because they cause cancer.


Besides homosexuals, what ISN'T banned in California?
 
2013-04-14 08:55:24 AM  

robohobo: prjindigo: Nanoparticles are banned in california because they cause cancer.

Besides homosexuals, what ISN'T banned in California?


Most things aren't, not even guns.
 
ZAZ [TotalFark]
2013-04-14 10:03:22 AM  
Most things aren't, not even guns.

As long as every grain of gunpowder comes with a proposition 65 warning label in at least 16 point font.
 
2013-04-14 10:14:09 AM  

prjindigo: Nanoparticles are banned in california because they cause cancer.


Oh joy - I eagerly await the inevitable email from Environmental Health & Safety informing me that even though I only set foot on lab premises about once every two or three years, my Job Hazard Assessment now requires me to complete an online course in nanoparticle safety. ;)

/Along with my annual General Employee Radiological Training.
//I managed to get out of my HIGH RISK Ergonomics Self-Assessment, though
///By having my supervisor tell EH&S that I don't actually do anything that's considered "work."
////Lab Rat Slashies!
 
2013-04-14 10:18:25 AM  

prjindigo: Nanoparticles are banned in california because they cause cancer.


When they're smaller than the holes on a HEPA filter that is a major concern, there aren't enough long term studies to determine if they're going to behave like asbestos in the lungs yet.   But everyone is assuming nano-particles will behave in a similar manner and are taking precautions now so you aren't flooded with nano-particle commercials here in 30 years.
 
2013-04-14 10:24:57 AM  

Girion47: prjindigo: Nanoparticles are banned in california because they cause cancer.

When they're smaller than the holes on a HEPA filter that is a major concern, there aren't enough long term studies to determine if they're going to behave like asbestos in the lungs yet.   But everyone is assuming nano-particles will behave in a similar manner and are being a bunch of killjoys. taking precautions now so you aren't flooded with nano-particle commercials here in 30 years.

 
2013-04-14 10:25:41 AM  

prjindigo: Nanoparticles are banned in california because they cause cancer.


Here's a good article from the ASSE.

Link
 
2013-04-14 10:28:39 AM  

Crudbucket: Girion47: prjindigo: Nanoparticles are banned in california because they cause cancer.

When they're smaller than the holes on a HEPA filter that is a major concern, there aren't enough long term studies to determine if they're going to behave like asbestos in the lungs yet.   But everyone is assuming nano-particles will behave in a similar manner and are being a bunch of killjoys. taking precautions now so you aren't flooded with nano-particle commercials here in 30 years.


"Studies have also shown that when inhaled, some nanoparticles can enter directly into the brain through the nasal mucous membrane, thus bypassing the blood-brain barrier. "
 
2013-04-14 10:29:20 AM  
That's nano-racist!
 
2013-04-14 10:34:51 AM  

Girion47: Crudbucket: Girion47: prjindigo: Nanoparticles are banned in california because they cause cancer.

When they're smaller than the holes on a HEPA filter that is a major concern, there aren't enough long term studies to determine if they're going to behave like asbestos in the lungs yet.   But everyone is assuming nano-particles will behave in a similar manner and are being a bunch of killjoys. taking precautions now so you aren't flooded with nano-particle commercials here in 30 years.

"Studies have also shown that when inhaled, some nanoparticles can enter directly into the brain through the nasal mucous membrane, thus bypassing the blood-brain barrier. "


Blood-brain, shmod-shmrain. It's science, what's the big whoop?
 
2013-04-14 10:38:22 AM  

Crudbucket: Girion47: Crudbucket: Girion47: prjindigo: Nanoparticles are banned in california because they cause cancer.

When they're smaller than the holes on a HEPA filter that is a major concern, there aren't enough long term studies to determine if they're going to behave like asbestos in the lungs yet.   But everyone is assuming nano-particles will behave in a similar manner and are being a bunch of killjoys. taking precautions now so you aren't flooded with nano-particle commercials here in 30 years.

"Studies have also shown that when inhaled, some nanoparticles can enter directly into the brain through the nasal mucous membrane, thus bypassing the blood-brain barrier. "

Blood-brain, shmod-shmrain. It's science, what's the big whoop?


You ate sweet tasting "chips" from the neighbor's garage siding didn't you?

Are your gums blue?
 
2013-04-14 10:53:26 AM  
We can produce 40mg of H2 from 100 hours of sunlight!

Awesome.
 
2013-04-14 11:09:53 AM  

Vlad_the_Inaner: We can produce 40mg of H2 from 100 hours of sunlight!

Awesome.


Well, depending on the ammount of titanium oxide used, or the area over which it was spread-it could be awesome, yes.
'100 hours of sunlight' isn't really a useful measurement, because it doesn't tell us the area.

It's like saying 'Oh my god, 100 hours of sunlight and this solar panel only managed to generate enough electricity to power a TV set!", but... if the solar panel is the size of a postage stamp, that's impressive. If it's the size of a city block, it's worthless.
 
2013-04-14 11:39:31 AM  

Unobtanium: So, they did this in a laboratory. I think TiO2 is pretty cheap, but what would this cost on a production scale? And what other resources and energy inputs are needed? Lots more questions to answer before we get to calling this a cure for energy issues.


"40 milligrams of hydrogen detected during a 100 hour solar-driven hydrogen production experiment "

so yah, lots of scale questions
one basic question, would it be more efficient to use PV to make electricity and electricity to split water to make H2.
Because until the new process is more efficient than that process ....
 
2013-04-14 11:43:21 AM  
"Despite being the most abundant element in the universe, pure hydrogen is scarce on Earth because hydrogen combines with just about any other type of atom."

Hydrogen is the biggest whore in our universe.
 
2013-04-14 11:48:01 AM  
I can't be the only one who thinks this is a stellar headline.
 
2013-04-14 12:24:22 PM  
TiO2 is cheap (it's paint whitener).  Using 20 atmospheres of pure hydrogen to generate the disorder (which is what these guys did) is not.
 
2013-04-14 01:18:16 PM  
It's not about the cost, it's about rarity. The idea being that you can make 10x more efficient solar-to-hydrogen plant. Probably be more expensive but the increased efficiency could mean more effective production-scale hydrogen plants.

Frankly though, we should just be using Thorium.

Interesting thing is, could you combine these black particles (since they absorb infrared) with a thorium reactor to make a hydrogen-producing nuke plant?
 
2013-04-15 01:04:04 AM  
TFA is the most egregious oversell of scientific research that I've seen lately.  So full of BS.

OK, so, yeah, they cooked some TiO2 up with H2.  Big deal.  Yes, it makes it semiconducting, with interband states, and therefore absorptive of IR as well as visible light.  Again, ancient knowledge.

Tons of researchers did all of this type of work in the late 1960's to mid-1980's.  But, oh, I see!  Those works were often disseminated at conferences, the proceedings books of which are just gathering dust in libraries.  Nobody OCR's those.

That is, even though all of this has been known for a long while, students and even young tenure-seeking faculty have all conveniently "forgotten" all of this scientific knowledge.  You know, reading is hard, and these articles are on paper goddamit!  I don't have time to go to the library!  If it's not find-able on Google, then it doesn't exist!  And therefore when I do it, it's new!
 
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