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Development of CuO/Cu4(OH)6SO4 Nanoparticle Mixtures to Optimize the H2S Adsorption
,
Yubiao Niu,
Henry Apsey,
Omotoke Olonisakin,
Richard Palmer ,
Shirin Alexander
ACS Applied Engineering Materials, Volume: 2, Issue: 2, Pages: 305 - 312
Swansea University Authors:
Donald Hill , Yubiao Niu, Henry Apsey, Richard Palmer , Shirin Alexander
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DOI (Published version): 10.1021/acsaenm.3c00575
Abstract
In this paper, we report the H2S adsorption behavior of a sorbent composed of mixtures of tenorite (CuO) and brochantite [Cu4(OH)6SO4]. These materials are readily prepared through the addition of NaOH(aq) to CuSO4(aq). They can be loaded onto polymer foams to create effective filters that can remov...
| Published in: | ACS Applied Engineering Materials |
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| ISSN: | 2771-9545 2771-9545 |
| Published: |
American Chemical Society (ACS)
2024
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa65506 |
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| Abstract: |
In this paper, we report the H2S adsorption behavior of a sorbent composed of mixtures of tenorite (CuO) and brochantite [Cu4(OH)6SO4]. These materials are readily prepared through the addition of NaOH(aq) to CuSO4(aq). They can be loaded onto polymer foams to create effective filters that can remove malodorous H2S gas, as evidenced by breakthrough tests. X-ray diffraction shows that the ratio of the two compounds in the mixture can be finely tuned by varying the amount of NaOH(aq) that is added to the reaction mixture. X-ray photoelectron spectroscopy shows that brochantite, like tenorite, has the ability to chemically adsorb H2S. Correlation of the H2S breakthrough data with scanning transmission electron microscopy measurements shows that the most effective sorbents contain nanoscale needle-like particles. These are likely to be formed largely by the tenorite phase. The samples with the greatest H2S adsorption efficacy contained less than 20% tenorite in the mixture, where these particles had the greatest abundance. The application of this sorbent onto porous substrates to create effective filters, along with the synthetic ease of its production, could allow this methodology to find use in a number of areas where H2S poses a problem. This could include areas where protective clothing is required to adsorb the gas from environments where there is a high level of H2S, for example, in wastewater treatment plants, oil and gas wells, or in the medical sector, where it could be deployed as filter media. |
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| Keywords: |
Hydrogen sulfide, sorbent, copper oxide, nanowire, filter, malodor |
| College: |
Faculty of Science and Engineering |
| Funders: |
Financialsupportwasprovidedby SaltsHealthcareLtd.Wewouldliketo thankDr.LucyFisher,Dr.DanJones,andDr.SteveShearanfor theirhelpwiththe materialcharacterization.Wewouldalsoliketo acknowledgethe assistanceprovidedbytheSwanseaUniversityCollegeof EngineeringAIMFacility,whichwasfundedin partby the EPSRC,UK(EP/M028267/1) |
| Issue: |
2 |
| Start Page: |
305 |
| End Page: |
312 |