Single atom catalyst-mediated generation of reactive species in water treatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F23%3A10253189" target="_blank" >RIV/61989100:27640/23:10253189 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15640/23:73621626

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2023/CS/D3CS00627A" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2023/CS/D3CS00627A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3cs00627a" target="_blank" >10.1039/d3cs00627a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Single atom catalyst-mediated generation of reactive species in water treatment

Popis výsledku v původním jazyce

Water is one of the most essential components in the sustainable development goals (SDGs) of the United Nations. With worsening global water scarcity, especially in some developing countries, water reuse is gaining increasing acceptance. A key challenge in water treatment by conventional treatment processes is the difficulty of treating low concentrations of pollutants (micromolar to nanomolar) in the presence of much higher levels of inorganic ions and natural organic matter (NOM) in water (or real water matrices). Advanced oxidation processes (AOPs) have emerged as an attractive treatment technology that generates reactive species with high redox potentials (E-0) (e.g., hydroxyl radical (HO center dot ), singlet oxygen (O-1(2)), sulfate radical (SO4 center dot-), and high-valent metals like iron(iv) (Fe(iv)), copper(iii) (Cu(iii)), and cobalt(iv) (Co(iv))). The use of single atom catalysts (SACs) in AOPs and water treatment technologies has appeared only recently. This review introduces the application of SACs in the activation of hydrogen peroxide and persulfate to produce reactive species in treatment processes. A significant part of the review is devoted to the mechanistic aspects of traditional AOPs and their comparison with those triggered by SACs. The radical species, SO4 center dot- and HO center dot , which are produced in both traditional and SACs-activated AOPs, have higher redox potentials than non-radical species, O-1(2) and high-valent metal species. However, SO4 center dot- and HO center dot radicals are non-selective and easily affected by components of water while non-radicals resist the impact of such constituents in water. Significantly, SACs with varying coordination environments and structures can be tuned to exclusively generate non-radical species to treat water with a complex matrix. Almost no influence of chloride, carbonate, phosphate, and NOM was observed on the performance of SACs in treating pollutants in water when nonradical species dominate. Therefore, the appropriately designed SACs represent game-changers in purifying water vs. AOPs with high efficiency and minimal interference from constituents of polluted water to meet the goals of water sustainability.

Název v anglickém jazyce

Single atom catalyst-mediated generation of reactive species in water treatment

Popis výsledku anglicky

Water is one of the most essential components in the sustainable development goals (SDGs) of the United Nations. With worsening global water scarcity, especially in some developing countries, water reuse is gaining increasing acceptance. A key challenge in water treatment by conventional treatment processes is the difficulty of treating low concentrations of pollutants (micromolar to nanomolar) in the presence of much higher levels of inorganic ions and natural organic matter (NOM) in water (or real water matrices). Advanced oxidation processes (AOPs) have emerged as an attractive treatment technology that generates reactive species with high redox potentials (E-0) (e.g., hydroxyl radical (HO center dot ), singlet oxygen (O-1(2)), sulfate radical (SO4 center dot-), and high-valent metals like iron(iv) (Fe(iv)), copper(iii) (Cu(iii)), and cobalt(iv) (Co(iv))). The use of single atom catalysts (SACs) in AOPs and water treatment technologies has appeared only recently. This review introduces the application of SACs in the activation of hydrogen peroxide and persulfate to produce reactive species in treatment processes. A significant part of the review is devoted to the mechanistic aspects of traditional AOPs and their comparison with those triggered by SACs. The radical species, SO4 center dot- and HO center dot , which are produced in both traditional and SACs-activated AOPs, have higher redox potentials than non-radical species, O-1(2) and high-valent metal species. However, SO4 center dot- and HO center dot radicals are non-selective and easily affected by components of water while non-radicals resist the impact of such constituents in water. Significantly, SACs with varying coordination environments and structures can be tuned to exclusively generate non-radical species to treat water with a complex matrix. Almost no influence of chloride, carbonate, phosphate, and NOM was observed on the performance of SACs in treating pollutants in water when nonradical species dominate. Therefore, the appropriately designed SACs represent game-changers in purifying water vs. AOPs with high efficiency and minimal interference from constituents of polluted water to meet the goals of water sustainability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21000 - Nano-technology

Projekt

<a href="/cs/project/EH22_008%2F0004587" target="_blank" >EH22_008/0004587: Technologie za hranicí nanosvěta</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Society Reviews

ISSN

0306-0012

e-ISSN

1460-4744

Svazek periodika

52

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

001085479500001

EID výsledku v databázi Scopus

2-s2.0-85175415452