Oxygen vacancies induced heterogeneous catalysis of peroxymonosulfate by Ni-doped AgFeO2 materials: Evolution of reactive oxygen species and mechanism

Zhao, Ying; An, Hongze; Dong, Guojun; Feng, Jing; Wei, Tong; Ren, Yueming; Ma, Jun

doi:10.1016/j.cej.2020.124371

Cited by 135 publications

(38 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The oxygen vacancies on the surface of metal/metal oxide play an important role in the generation of 1 O 2 and efficient activation of PMS. The surface and lattice oxygen vacancies are expected to facilitate oxygen adsorption and storage, and accelerate oxygen mobility, which are important for rapid generation of O 2 •− and their following conversion to 1 O 2 [ 105 , 127 ]. Gao et al prepared LaBO 3 perovskites with different B site metal (B= Fe, Zn, Mn and Ni) to investigate the effect of B site metals on the PMS activation and 1 O 2 generation route [ 8 ].…”

Section: Evolution Of 1 O 2 mentioning

confidence: 99%

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Xiao

Faheem

et al. 2021

IJERPH

View full text Add to dashboard Cite

Advanced oxidation processes (AOPs) based on peroxydisulfate (PDS) or peroxymonosulfate (PMS) activation have attracted much research attention in the last decade for the degradation of recalcitrant organic contaminants. Sulfate (SO4•−) and hydroxyl (•OH) radicals are most frequently generated from catalytic PDS/PMS decomposition by thermal, base, irradiation, transition metals and carbon materials. In addition, increasingly more recent studies have reported the involvement of singlet oxygen (1O2) during PDS/PMS-based AOPs. Typically, 1O2 can be produced either along with SO4•− and •OH or discovered as the dominant reactive oxygen species (ROSs) for pollutants degradation. This paper reviews recent advances in 1O2 generation during PDS/PMS activation. First, it introduces the basic chemistry of 1O2, its oxidation properties and detection methodologies. Furthermore, it elaborates different activation strategies/techniques, including homogeneous and heterogeneous systems, and discusses the possible reaction mechanisms to give an overview of the principle of 1O2 production by activating PDS/PMS. Moreover, although 1O2 has shown promising features such as high degradation selectivity and anti-interference capability, its production pathways and mechanisms remain controversial in the present literatures. Therefore, this study identifies the research gaps and proposes future perspectives in the aspects of novel catalysts and related mechanisms.

show abstract

Section: Evolution Of 1 O 2 mentioning

confidence: 99%

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Xiao

Faheem

et al. 2021

IJERPH

View full text Add to dashboard Cite

show abstract

“…Oxygen vacancies would induce localized states, trap charge carriers efficiently and inhibit the recombination between electrons and holes. 23 As a result, the number of electrons that effectively participate in the adsorption and reaction would be increased, which is beneficial for the catalytic process.…”

Section: Resultsmentioning

confidence: 99%

Synergistic oxygen vacancy-rich CuO/visible light activation of peroxymonosulfate for degradation of rhodamine B: fast catalyst synthesis and degradation mechanism

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Hence, it is more selective and efficient in certain degradation processes such as the decarboxylation of carboxylic acids. , Furthermore, the half-life of • SO 4 – (30–40 μs) is significantly longer than that of • OH (∼1 ns). Generally, • SO 4 – is produced upon activation of peroxydisulfate (PDS) or peroxymonosulfate (PMS), which can be achieved by energy-transfer (e.g., UV, heat) and electron-transfer (e.g., transition metals, electron-donating functional groups). − PDS and PMS are often used as oxidants to effectively trap the e – produced by photocatalytic MOFs and generate • SO 4 – to degrade pollutants (eqs –). − The low-valence transition metals in the SBU of MOFs can also activate PDS and PMS without light (eqs –). ,, In addition, • SO 4 – can react with water and produce • OH (eq ). , …”

Section: Generation Of Reactive Radical Species In Mof-induced Photoc...mentioning

confidence: 99%

Metal Organic Frameworks (MOFs) as Photocatalysts for the Degradation of Agricultural Pollutants in Water

et al. 2021

View full text Add to dashboard Cite

Increasing demand for food due to rapid population growth has exerted unprecedented pressure on the global agricultural industry. Agrochemicals are widely used to ensure productivity, leading to the prevalence of legacy and emerging agricultural chemicals in the environment, most of which are toxic and persistent. Metal−organic frameworks (MOFs) as a group of novel photocatalytic materials with ultrahigh porosity and tunability have demonstrated high potential for efficient removal of these recalcitrant pollutants. This critical review aims to present the potential of MOF-catalyzed photodegradation of pesticides and antibiotics. Initially, the capabilities of different MOF-based composites to harvest visible light are compared. Examples include MOFs combined with bismuth oxyhalides (BiOX) and graphite oxide (GO). Mechanisms involved in MOF-induced photocatalytic processes such as electron−hole (e − /h + ) separation, generation of reactive species, and degradation pathways of representative pollutants as well as impacts of water chemistry are illustrated in detailed. Research on applying MOF-catalyzed processes is largely in progress, and many more studies with greater mechanistic evaluation are needed to fully assess the potential of such processes to depollute water.

show abstract

Oxygen vacancies induced heterogeneous catalysis of peroxymonosulfate by Ni-doped AgFeO2 materials: Evolution of reactive oxygen species and mechanism

Cited by 135 publications

References 52 publications

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Synergistic oxygen vacancy-rich CuO/visible light activation of peroxymonosulfate for degradation of rhodamine B: fast catalyst synthesis and degradation mechanism

Metal Organic Frameworks (MOFs) as Photocatalysts for the Degradation of Agricultural Pollutants in Water

Contact Info

Product

Resources

About