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A comment on Nontoxic powder uses sunlight to quickly disinfect contaminated drinking water. Parent comment

Re:Nontoxic powder uses sunlight to quickly disinfect contam... by prox on Saturday May 20, 2023 @04:49AM (#36010346)
Is aluminum magnetic? Didn’t think so?
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Re:Nontoxic powder uses sunlight to quickly disinfect contam... by dspillett on Saturday May 20, 2023 @04:58AM (#36010380)
No, that is why it might still there to remove with a coffee filter, after removing the powder magnetically, I assume.
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Re:Nontoxic powder uses sunlight to quickly disinfect contam... by MobiusHorizons on Saturday May 20, 2023 @12:20PM (#36013206)
> The powder consists of nano-size flakes of aluminum oxide, molybdenum sulfide, copper, and iron oxide

Aluminum oxide is not magnetic, but the iron oxide (presumably bonded to the other ingredients) is magnetic.

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Re:Nontoxic powder uses sunlight to quickly disinfect contam... by culi on Saturday May 20, 2023 @04:11PM (#36015123)
The original paper specifies in the abstraction:

> discrete nanoflakes of (Al2O3@v-MoS2)/Cu/Fe3O4

https://www.nature.com/articles/s44221-023-00079-4

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