Low-crystalline Ce-based bimetallic MOFs synthesized via DBD plasma for excellent visible photocatalytic performance

Tang, Tao; Jin, Xianghui; Tao, Xumei; Huang, Liang; Shang, Shuyong

doi:10.1016/j.jallcom.2021.162452

Cited by 31 publications

(19 citation statements)

References 45 publications

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“…In this regard, Tang et al confirmed the chemical compositions at the surface and oxidation states via XPS spectra of Ce-MOFs and FeCe-MOFs with different Fe : Ce molar ratios. 74 The XPS spectrum demonstrated the presence of all the constituent ions in the respective materials such as C, O, and Ce in Ce-MOFs and C, O, Ce, and Fe in all Fe Ce-MOFs. As shown in Fig.…”

Section: Physico-chemical Characterizationmentioning

confidence: 92%

Inner transition metal-modulated metal organic frameworks (IT-MOFs) and their derived nanomaterials: a strategic approach towards stupendous photocatalysis

et al. 2023

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Section: Physico-chemical Characterizationmentioning

confidence: 92%

Inner transition metal-modulated metal organic frameworks (IT-MOFs) and their derived nanomaterials: a strategic approach towards stupendous photocatalysis

et al. 2023

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“…Isotherms of Ce/Mo metal oxide samples obtained by different preparation methods can be considered as type IV isotherms according to the International Union of Pure Applied Chemistry (IUPAC) classification. At the same time, the sample has H4 hysteresis phenomenon [23].…”

Section: Bet Analysismentioning

confidence: 97%

“…The diffraction peak at 530 eV could be attributed to lattice oxygen (O β ), while the diffraction peak at 533 eV can be presumed to be adsorbed oxygen (O α ) with the surface chemical species [21][22][23][24][25]. O α showed higher electron mobility than O β .…”

Section: Xps Analysismentioning

confidence: 99%

“…The Eg of MO-H, MO-C and MO-P was 2.54 eV, 2.50 eV and 2.43 eV, respectively. MO-P exhibited a relatively narrow band gap, which was favorable for the transport of photogenerated electrons, reducing the recombination rate of e − -h + , and facilitating the enhancement of photocatalytic performance [21][22][23][24].…”

Section: Uv-vis Drs Analysismentioning

confidence: 99%

“…9. It can be seen from the Mott-Schottky curve that the slope of the curve is positive, so it is judged that MO-P is N-type semiconductor [23], and the flat band potential of MO-P is about − 0.58 V vs. Ag/AgCl, corresponding to − 0.38 V vs. NHE for MO-P (E NHE = E Ag/AgCl + 0.197 V). The flat band position of an N-type semiconductor is generally 0.1-0.3 V more positive than the E CB , equivalent to close to its E CB [24].…”

Section: Mott-schottky Analysismentioning

confidence: 99%

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Ce2(MoO4)3 synthesized with oleylamine and oleic acid as additives for photocatalysis: effect of preparation method

Huang

Kong

Chang

et al. 2022

Photochem Photobiol Sci

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Ce 2 (MoO 4 ) 3 was prepared using dielectric barrier discharge (DBD) plasma method, co-precipitation method and hydrothermal method, respectively, with water/ethanol (W/O) as solvent, oleylamine (OAm) and oleic acid (OAc) as additives. Preparation method showed significant influence on the morphological and structural properties, as well as photocatalytic performance. Ce 2 (MoO 4 ) 3 synthesized with DBD plasma (MO-P) was mainly flowerlike nanosheets, which were beneficial to promoting electron transfer and providing more space for catalytic activity. Also, MO-P samples exhibited more oxygen vacancies, which were conducive to the photocatalytic performance. What's more, MO-P showed lower PL intensity and narrow energygap, which implied a slow photoelectron-hole pair recombination rate and an increased electron transfer rate. The degradation rate of methyl orange (50 mg/L) could achieve 98% within 12 min with 0.5 g/L MO-P. Hydroxyl radicals (•OH) and superoxide radicals (•O 2 − ) played a major effect. Plasma synthesis method exhibited potential application prospect in photocatalysts preparation.

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Trace to the Source: Self‐Tuning of MOF Photocatalysts

Zhou

Zhang

Xiao

et al. 2023

Advanced Energy Materials

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Benefitting from ultra‐high porosity, large specific surface area (SSA), and rich active sites, metal–organic frameworks (MOFs) have emerged as a star material in energy and environment related applications, especially in photocatalysis. In comparison with conventional photocatalysts, MOFs can be customized in terms of electronic structure, photo‐responsiveness, and morphological dimensions by rational design, which means that MOFs eliminate the need for other species to achieve enhanced photocatalytic performance, such as metals, compounds, and polymers, which may introduce extra costs, be time‐consuming, be multi‐phase, or have an unclear mechanism. Most previous review works related to MOF photocatalysis have mixed self‐tuning and assisted‐tuning, which often gives an incomplete understanding. In this work, the self‐tunning of MOFs by analyzing component (as clusters, ligands, and inclusions), defect (defect engineering, as linkers, clusters, and oxygen vacancies (OVs), and crystal (as facets, dimensions, and amorphization) is summarized. Then, outstanding examples of these strategies applied to water redox, CO2/N2 reduction, organic conversion, and environmental treatment are discussed. Finally, the opportunities and challenges faced in the self‐tuning of MOFs are analyzed from different perspectives. This paper is a comprehensive and systematic review on the self‐tuning of MOFs to enhance photocatalytic activity.

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Low-crystalline Ce-based bimetallic MOFs synthesized via DBD plasma for excellent visible photocatalytic performance

Cited by 31 publications

References 45 publications

Inner transition metal-modulated metal organic frameworks (IT-MOFs) and their derived nanomaterials: a strategic approach towards stupendous photocatalysis

Inner transition metal-modulated metal organic frameworks (IT-MOFs) and their derived nanomaterials: a strategic approach towards stupendous photocatalysis

Ce2(MoO4)3 synthesized with oleylamine and oleic acid as additives for photocatalysis: effect of preparation method

Trace to the Source: Self‐Tuning of MOF Photocatalysts

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