I was reading Sci Am while I waited for Mr buffy to do his pool exercises this afternoon. They referenced this paper, and I thought it was interesting. In essence it says…copper is antimicrobial, as are many metals. We can make a piece of copper better by lacing it with laser holes to increase the surface area and kill off more microbes.

https://sci-hub.tw/https://doi.org/10.1002/admi.201901890

(Sorry about that annoying SciHub woman waving in the corner again)

buffy said:

I was reading Sci Am while I waited for Mr buffy to do his pool exercises this afternoon. They referenced this paper, and I thought it was interesting. In essence it says…copper is antimicrobial, as are many metals. We can make a piece of copper better by lacing it with laser holes to increase the surface area and kill off more microbes.

https://sci-hub.tw/https://doi.org/10.1002/admi.201901890

(Sorry about that annoying SciHub woman waving in the corner again)

Dear lord, she is very off-putting.

buffy said:

I was reading Sci Am while I waited for Mr buffy to do his pool exercises this afternoon. They referenced this paper, and I thought it was interesting. In essence it says…copper is antimicrobial, as are many metals. We can make a piece of copper better by lacing it with laser holes to increase the surface area and kill off more microbes.

https://sci-hub.tw/https://doi.org/10.1002/admi.201901890

(Sorry about that annoying SciHub woman waving in the corner again)

What is with the highly distracting waving woman, very annoying.

PermeateFree said:

buffy said:

I was reading Sci Am while I waited for Mr buffy to do his pool exercises this afternoon. They referenced this paper, and I thought it was interesting. In essence it says…copper is antimicrobial, as are many metals. We can make a piece of copper better by lacing it with laser holes to increase the surface area and kill off more microbes.

https://sci-hub.tw/https://doi.org/10.1002/admi.201901890

(Sorry about that annoying SciHub woman waving in the corner again)

What is with the highly distracting waving woman, very annoying.

The only way to get the link was through SciHub, as it’s still locked on the SciAm site. Put your hand over the woman while you read the piece.

Or buy the article you cheap whiny bastards…

Heh, I just bought a bag of these – Solid copper battery clamps – to attach gloves to my orange gear with, for exactly this reason.

And because they’re a lot more steampunky, oviously.

:-)

poikilotherm said:

Or buy the article you cheap whiny bastards…

or download it and read it at leisure.

buffy said:

I was reading Sci Am while I waited for Mr buffy to do his pool exercises this afternoon. They referenced this paper, and I thought it was interesting. In essence it says…copper is antimicrobial, as are many metals. We can make a piece of copper better by lacing it with laser holes to increase the surface area and kill off more microbes.

https://sci-hub.tw/https://doi.org/10.1002/admi.201901890

(Sorry about that annoying SciHub woman waving in the corner again)

Yes. A heck of a lot of metals are highly toxic to microorganisms. And the more the surface area the greater the effectiveness.

Just trying to remember which metals (and semi-metals).
IIRC correctly, gold is not one of them. Possibly not zinc either.

Copper, chromium, arsenic, mercury, silver, thallium, lead obviously.

I think I can add palladium, rhodium, cerium, manganese and nickel to that.

And others.

mollwollfumble said:

buffy said:

I was reading Sci Am while I waited for Mr buffy to do his pool exercises this afternoon. They referenced this paper, and I thought it was interesting. In essence it says…copper is antimicrobial, as are many metals. We can make a piece of copper better by lacing it with laser holes to increase the surface area and kill off more microbes.

https://sci-hub.tw/https://doi.org/10.1002/admi.201901890

(Sorry about that annoying SciHub woman waving in the corner again)

Yes. A heck of a lot of metals are highly toxic to microorganisms. And the more the surface area the greater the effectiveness.

Just trying to remember which metals (and semi-metals).
IIRC correctly, gold is not one of them. Possibly not zinc either.

Copper, chromium, arsenic, mercury, silver, thallium, lead obviously.

I think I can add palladium, rhodium, cerium, manganese and nickel to that.

And others.

We use copper as an adjunct algaecide in water chemistry.

I’m sure you’ve seen kids with green hair from being in a swimming pool all day? Poor old Chlorine usually gets the blame, but it’s not… ;-)

Copper is used in lots of fungicide applications in agricultutre. It is also used to burn the leaves off deciduous trees in Nurseries.

roughbarked said:

Copper is used in lots of fungicide applications in agriculture. It is also used to burn the leaves off deciduous trees in Nurseries.

As Cu metal?

Or in a Cu-containing compound (eg CuSO4)?

Michael V said:

roughbarked said:

Copper is used in lots of fungicide applications in agriculture. It is also used to burn the leaves off deciduous trees in Nurseries.

As Cu metal?

Or in a Cu-containing compound (eg CuSO4)?

Also Chromated Copper Arsenate.

Michael V said:

roughbarked said:

Copper is used in lots of fungicide applications in agriculture. It is also used to burn the leaves off deciduous trees in Nurseries.

As Cu metal?

Or in a Cu-containing compound (eg CuSO4)?

Yes copper salts. Various. ie: Copper sulphate as you have mentioned and Copper oxychloride.

Tamb said:

Michael V said:

roughbarked said:

Copper is used in lots of fungicide applications in agriculture. It is also used to burn the leaves off deciduous trees in Nurseries.

As Cu metal?

Or in a Cu-containing compound (eg CuSO4)?

Also Chromated Copper Arsenate.

That too.

Copper oxychloride plus metalaxyl.. various embellishments of Bordeaux mix.

roughbarked said:

Michael V said:

roughbarked said:

Copper is used in lots of fungicide applications in agriculture. It is also used to burn the leaves off deciduous trees in Nurseries.

As Cu metal?

Or in a Cu-containing compound (eg CuSO4)?

Yes copper salts. Various. ie: Copper sulphate as you have mentioned and Copper oxychloride.

The OP was about Cu as metal.

Michael V said:

roughbarked said:

Michael V said:

As Cu metal?

Or in a Cu-containing compound (eg CuSO4)?

Yes copper salts. Various. ie: Copper sulphate as you have mentioned and Copper oxychloride.

The OP was about Cu as metal.

OK.

roughbarked said:

Michael V said:

roughbarked said:

Yes copper salts. Various. ie: Copper sulphate as you have mentioned and Copper oxychloride.

The OP was about Cu as metal.

OK.

“It reveals direct formation of mesoporous structures with higher surface oxide (Cu2O and CuO), which provide a highly stable superhydrophilic property to the LT-Cu surfaces. The antibacterial properties of
LT-Cu are tested against pathogenic bacterial strains with different concentrations including Pseudomonas aeruginosa, and methicillin- resistant Staphylococcus aureus (MRSA USA300) at 105 CFU mL−1,
and Escherichia coli and Staphylococcus aureus at high bacterial concentrations of 108 CFU mL−1 using standard contact killing tests. The analysis shows that LT-Cu needs 40, 90, 60, and 120 min to completely eradicate the respective bacterial strain. The LT-Cu causes membrane damage to the bacterial cells immediately after exposure. Furthermore, the biocompatibility of LT-Cu is investigated by in vitro immune-staining assays with mammary stromal fibroblasts and T4-2 cells.”