Diatomite supported hierarchical 2D CoNi3O4 nanoribbons as highly efficient peroxymonosulfate catalyst for atrazine degradation

Dong, Xiongbo; Ren, Bangxing; Zhang, Xiangwei; Liu, Xiaorui; Sun, Zhiming; Li, Chunquan; Tan, Ye; Yang, Shanshan; Zheng, Shuilin; Dionysiou, Dionysios D.

doi:10.1016/j.apcatb.2020.118971

Cited by 157 publications

(44 citation statements)

References 61 publications

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“…This phenomenon demonstrates the remarkably enhanced electron transfer e ciency after doping Si atom into the CoN 4 moieties, which is consistent with the results of the much higher change of current output in the chronoamperometric curves for p-CoSi 1 N 3 @D (compared with p-CoN 4 ) (Supplementary Fig. 28) 8,33 . Moreover, the calculated adsorption energy of PMS on CoN 4 and CoSi 1 N 3 moieties are -3.21 eV and -5.37 eV respectively (Supplementary Table 6), suggesting that PMS adsorption on CoN 4 and CoSi 1 N 3 is thermodynamically feasible.…”

Section: Radical (Sosupporting

confidence: 87%

“…Interestingly, the BPA removal is dramatically suppressed by furfuryl alcohol (FFA, a scavenger for 1 O 2 ), while nearly no inhibition could be detected within the addition of tert-butanol (TBA, a scavenger for • OH) and methanol (Me, a scavenger for SO 4 •− and • OH) (Fig. 5c) 8,33 . These results demonstrate that only the nonradical reaction process plays signi cant role in BPA degradation when p-CoSi 1 N 3 @D acts as catalyst for PMS activation.…”

Section: Radical (Somentioning

confidence: 99%

“…Moreover, the pore structures of catalysts play signi cant roles in PMS activation via modulating the transport rates of PMS and contaminants towards active sites 32,33 . In fact, a large portion of isolated metal centers on inner surface for SACs is blocked from PMS activation.…”

Section: Introductionmentioning

confidence: 99%

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Natural mineral modulated single atom catalyst for effective water treatment

Dong¹,

Chen²,

Tang³

et al. 2021

Preprint

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Single atom catalysts (SACs) have been growing as an emerging “hot” topic in environmental remediation. Their performance can be rationally optimized via modulating spatial coordination configuration and porous structure of SACs, which is still challenging. Herein, a novel Si, N co-coordinated cobalt SACs (p-CoSi1N3@D) with 3D freestanding architecture was tailored via employing natural mineral (diatomite) as Si source and porous template. Theoretical calculations and experimental analysis reveal that Si substitution dramatically decreases electronegativity of CoN4 moieties and thus accelerates interaction and electron transfer between peroxymonosulfate and Co single atom center. Moreover, p-CoSi1N3@D inherits hierarchically porous architecture of diatomite, providing more accessible cobalt sites and open diffusion channels for peroxymonosulfate and contaminants in water treatment applications. Thanks to optimal coordination structure and porous architecture, p-CoSi1N3@D can serve as highly active catalyst toward peroxymonosulfate activation, with a turn-over frequency of 299.8 min− 1 for bisphenol A degradation, surpassing those of catalysts with transition metal SACs or oxides in disclosed literature. This work provides a novel vision for development of SACs towards wastewater reclamation.

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Section: Radical (Sosupporting

confidence: 87%

Section: Radical (Somentioning

confidence: 99%

See 1 more Smart Citation

Natural mineral modulated single atom catalyst for effective water treatment

Dong¹,

Chen²,

Tang³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, the pore structures of catalysts play significant roles in PMS activation via modulating the transport rates of PMS and contaminants toward active sites. [32,33] In fact, a large portion of isolated metal centers on inner surface for SACs is blocked from PMS activation. Although SACs derived from metal-organic frameworks (MOF) or zeolitic imidazole framework (ZIF) possess abundant micropores and small mesopores (<4 nm), the mass diffusion into their inner surface is highly undesirable.…”

Section: Introductionmentioning

confidence: 99%

Mineral Modulated Single Atom Catalyst for Effective Water Treatment

Dong

Chen

Tang

et al. 2022

Adv Funct Materials

Self Cite

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Single atom catalysts (SACs) have been growing as an emerging "hot" topic in environmental remediation. Their performance can be rationally optimized via modulating spatial coordination configuration and the porous structure of SACs, which is still challenging. Herein, a novel Si, N co-coordinated cobalt SAC (p-CoSi 1 N 3 @D) with 3D free standing architecture is tailored via employing natural mineral (diatomite) as a Si source and porous template. Theoretical calculations and experimental analysis reveal that the substitution of N by Si dramatically accelerates the interaction and electron transfer between peroxymonosulfate and the Co single atom center. Moreover, p-CoSi 1 N 3 @D inherits the hierarchically porous architecture of diatomite, providing more accessible cobalt sites and open diffusion channels for peroxymonosulfate and contaminants in water treatment applications. Thanks to optimal coordination structure and porous architecture, p-CoSi 1 N 3 @D can serve as a highly active catalyst for peroxymonosulfate activation, with a turnover frequency of 299.8 min −1 for bisphenol A degradation, surpassing those of catalysts with transition metal SACs or oxides in the disclosed literature. This work provides a novel strategy for the development of SACs for wastewater reclamation, and deepens the understanding of the significant role of templates in spatial coordination configuration of SACs.

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“…20,21 DT-based composite photocatalytic materials oen have excellent adsorption performance, which can effectively improve the contact probability between a catalyst and pollutants and improve the photocatalytic degradation activity, which is also conducive to overcome the difficult adsorption of pollutants due to the small specic surface area of the catalyst. 22,23 Tanniratt et al used zinc dust waste and DT waste extracted from the beer industry as raw materials to load ZnO particles onto DT carrier through a simple impregnation and calcination method, successfully improving the photocatalytic activity of ZnO and realizing efficient reuse of waste. 24 Among the widely studied photocatalytic semiconductor materials, graphite-like carbon nitride (g-C 3 N 4 ) (about 2.70 eV) has attracted a lot of attention due to its simple preparation process and certain response in the visible spectrum range.…”

Section: Introductionmentioning

confidence: 99%