An Earth‐Abundant Ni‐Based Single‐Atom Catalyst for Selective Photodegradation of Pollutants

Vilé, Gianvito; Sharma, Priti; Nachtegaal, Maarten; Tollini, Flavio; Moscatelli, Davide; Sroka-Bartnicka, Anna; Tomanec, Ondřej; Petr, Martin; Filip, Jan; Pieta, Izabela S.; Zbořil, Radek; Gawande, Manoj B.

doi:10.1002/solr.202170071

Cited by 24 publications

(20 citation statements)

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“…The N 1s core‐level spectra of p‐CoSi 1 N 3 @D is well divided into four peaks, including pyridinic N, CoN, pyrrolic N, and graphitic N (Figure S12, Supporting Information). [ 45–50 ] The pyrrolic N in binding energy of 400.0 eV served as the dominant chemical species. Most importantly, different from diatomite, only a weak peak located at 101 eV, which associated to the SiC bond, can be observed in the high‐resolution Si 2p XPS spectra of p‐CoSi 1 N 3 @D (Figure S13, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…The XANES curve of p‐CoSi 1 N 3 @D ( Figure a) shows a white line peak between that of Co foil and CoO, demonstrating that Co single atoms carried positive charges and their oxidation states are situated between 0 and +2. [ 47,52,53 ] The Fourier‐transformed k 3 ‐weighted EXAFS curve of p‐CoSi 1 N 3 @D displays one prominent peak at 1.31 Å, corresponding to CoN scanning path (Figure 3b). A shoulder peak at around 1.88 Å is consistent with the prediction of CoSi coordination in CoSi x N 4‐x models (Figures S18a, S19a, S20a, and S21a, Supporting Information), revealing the successful coordination of Si atoms in CoN 4 moieties.…”

Section: Resultsmentioning

confidence: 99%

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Mineral Modulated Single Atom Catalyst for Effective Water Treatment

Dong

Chen

Tang

et al. 2022

Adv Funct Materials

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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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mineral Modulated Single Atom Catalyst for Effective Water Treatment

Dong

Chen

Tang

et al. 2022

Adv Funct Materials

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“…Environmental treatment (plastic waste transformation, 208 domestic sewage treatment, 209,210 VOC, 76 factory exhaust desulfurization and denitrification, etc.) processes often require a large amount of energy, and the use of fossil energy makes these processes a source of carbon dioxide emissions 97 . The treatment of pollutants in the environment can promote the realization of the goal of carbon neutrality in an indirect way 211 .…”

Section: Applications Of Single‐atom Catalysts In Carbon Neutralmentioning

confidence: 99%

“…Ultravioletvisible (UV-vis) diffuse reflectance spectroscopy is often used to study the light absorption (Figure 6A) and band gap of materials (Figure 6B). 97,98 Xiang et al 99 prepared Ni single-atom catalysts supported on graphitic carbon nitride (g-C 3 N 4 ). The introduction of single metal atoms into g-C 3 N 4 has the dual effects of narrowing the band gap and enhancing light absorption in the 450-800 nm range (Figure 7A).…”

Section: Potential Roles Of Single Atoms In Photocatalysismentioning

confidence: 99%

Towards single‐atom photocatalysts for future carbon‐neutral application

Zhang

et al. 2022

SmartMat

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The implementation of carbon neutrality to achieve the goal of controlling global warming in the Paris Climate Agreement is currently the most important international climate issue. Efficient utilization of solar energy through photocatalysts is of great significance to the adjustment of energy structure. Single‐atom photocatalysts have excellent catalytic activity and selectivity in a variety of applications, including sustainable energy conversion, chemical synthesis, CO2 reduction, environmental remediation, and other areas, owing to their unique electronic structure and high atom usage. Here, we elaborated on the content and implementation direction of the carbon neutrality policy and demonstrated the design principles of single‐atom photocatalysts. Recent single‐atom synthesis strategies are summarized, and representative characterization methods have been shown to further reveal the structure–performance relationship. Then, we focus on the application of single‐atom photocatalysts in CO2 reduction, sustainable energy conversion, and environmental remediation. Finally, the opportunities and challenges in the application of single‐atom photocatalysts were discussed based on its current development.

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“…Single‐atom catalysts with isolated metal species entrapped in the cavities of inert carriers have become the new frontier in heterogeneous catalysis. These materials emulate the coordination environment of homogeneous catalysts and maximize the utilization of precious metals [1–20] . To date, these materials are mostly evaluated in slurry or packed‐bed reactors.…”

Section: Introductionmentioning

confidence: 99%

3D‐Printed Structured Reactor with Integrated Single‐Atom Catalyst Film for Hydrogenation

Vilé

Xie

et al. 2022

ChemCatChem

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Structured catalytic reactors are gaining considerable attention for integrated chemical synthesis because they offer enhanced mass transfer and easy catalyst recovery. In this paper, a new, cost-effective design strategy that combines 3D printing and single-atom catalysis is presented, enabling the construction of an integrated mixer-based reactor insert, coated with a thin single-atom catalytic layer. The material has been characterized from the nano to the macro scale to unlock structure-property relationships. The performance of the catalyst structure was evaluated via hydrogenation of two model compounds used in the flavorings and fragrances industry. The structured catalytic reactor was active, selective, and reusable several times without apparent drop in performance. This immobilized catalyst system removes the need for catalyst separation post-reaction, and enables modern synthesis options catalyzed over atomicallyprecise nanomaterials.

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An Earth‐Abundant Ni‐Based Single‐Atom Catalyst for Selective Photodegradation of Pollutants

Cited by 24 publications

References 0 publications

Mineral Modulated Single Atom Catalyst for Effective Water Treatment

Mineral Modulated Single Atom Catalyst for Effective Water Treatment

Towards single‐atom photocatalysts for future carbon‐neutral application

3D‐Printed Structured Reactor with Integrated Single‐Atom Catalyst Film for Hydrogenation

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