Molten‐Salt Technology Application for the Synthesis of Photocatalytic Materials

Luo, Laiyu; Wang, Siyu; Wang, Hong; Tian, Chungui; Jiang, Baojiang

doi:10.1002/ente.202000945

Cited by 12 publications

(9 citation statements)

References 95 publications

(131 reference statements)

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“…Based on Figure 4, the particle sizes were decreasing but they agglomerated. It indicates that Fe doping in uences the growth of CTO grain particles (Huang et al, 2016;Luo et al, 2021). Sato et al (2019) reported that the substitution of Ti 4+ with Fe 3+ with a smaller charge caused an unbalance charge, thus compensated by the reveal of oxygen vacancy.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Fe-Doped CaTiO3 Polyhedra Prepared by Molten NaCl Salt

Novianti

Haikal

Rouf

et al. 2022

Sci.Technol.Indonesia

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CaTiO3 as one of the perovskite-based photocatalysts has a band gap energy of 3.5 eV (~354 nm), thus will work at the ultraviolet light region. One of the strategies to decrease the band gap energy is doping metal. In this research, CaTiO3 was doped by Fe element as purposes to decreasing its band gap energy. Fe doped CaTiO3 compounds were synthesized using molten NaCl salt method. The diffractogram samples showed that the Fe-doped CaTiO3 crystal was successfully prepared. Meanwhile, the SEM images showed that the particle shape was regular polyhedral morphology, and doping Fe3+ caused the particle size to decrease and agglomerated. The UV-Vis DRS spectra showed that the Fe-dopant revealed the absorption light at visible range wavelength.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Fe-Doped CaTiO3 Polyhedra Prepared by Molten NaCl Salt

Novianti

Haikal

Rouf

et al. 2022

Sci.Technol.Indonesia

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“…Therefore, researchers have developed a new type of carbon nitrides with poly heptazine imide (PHI) structure, which are highly stable and crystalline. PHIs are generally synthesized from nitrogen-rich compounds through solid-state reactions with alkali metal chlorides or thermal condensation of CN precursors in eutectic salt melts [ 61 , 62 ]. Post-modification is another way to prepare PHI-based CNs by treating the condensed CNs with alkali metal salts.…”

Section: Types and The Characteristics Of Carbon Nitridesmentioning

confidence: 99%

Organocatalysis with carbon nitrides

Ruban

Ramadass

Singh

et al. 2023

Science and Technology of Advanced Materials

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Carbon nitrides, a distinguished class of metal-free catalytic materials, have presented a good potential for chemical transformations and are expected to become prominent materials for organocatalysis. This is largely possible due to their low cost, exceptional thermal and chemical stability, non-toxicity, ease of functionalization, porosity development, etc. Especially, the carbon nitrides with increased porosity and nitrogen contents are more versatile than their bulk counterparts for catalysis. These N-rich carbon nitrides are discussed in the earlier parts of the review. Later, the review highlights the role of such carbon nitride materials for the various organic catalytic reactions including Knoevenagel condensation, oxidation, hydrogenation, esterification, transesterification, cycloaddition, and hydrolysis. The recently emerging concepts in carbon nitride-based organocatalysis have been given special attention. In each of the sections, the structure–property relationship of the materials was discussed and related to their catalysis action. Relevant comparisons with other catalytic materials are also discussed to realize their real potential value. The perspective, challenges, and future directions are also discussed. The overall objective of this review is to provide up-to-date information on new developments in carbon nitride-based organic catalysis reactions that could see them rising as prominent catalytic materials in the future.

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“…Furthermore, it is also important to choose the appropriate doping method. The molten-salt method of element doping is an efficient and low-cost method because its molten-salt liquid environment can make the element distribution more uniform, and the treatment process before and after the reaction is very simple [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

One-Pot Synthesis of N-Doped NiO for Enhanced Photocatalytic CO2 Reduction with Efficient Charge Transfer

Wang

Shi

et al. 2023

Molecules

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The green and clean sunlight-driven catalytic conversion of CO2 into high-value-added chemicals can simultaneously solve the greenhouse effect and energy problems. The controllable preparation of semiconductor catalyst materials and the study of refined structures are of great significance for the in-depth understanding of solar-energy-conversion technology. In this study, we prepared nitrogen-doped NiO semiconductors using a one-pot molten-salt method. The research shows that the molten-salt system made NiO change from p-type to n-type. In addition, nitrogen doping enhanced the adsorption of CO2 on NiO and increased the separation of photogenerated carriers on the NiO. It synergistically optimized the CO2-reduction system and achieved highly active and selective CO2 photoreduction. The CO yield on the optimal nitrogen-doped photocatalyst was 235 μmol·g−1·h−1 (selectivity 98%), which was 16.8 times that of the p-type NiO and 2.4 times that of the n-type NiO. This can be attributed to the fact that the nitrogen doping enhanced the oxygen vacancies of the NiOs and their ability to adsorb and activate CO2 molecules. Photoelectrochemical characterization also confirmed that the nitrogen-doped NiO had excellent electron -transfer and separation properties. This study provides a reference for improving NiO-based semiconductors for photocatalytic CO2 reduction.

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Molten‐Salt Technology Application for the Synthesis of Photocatalytic Materials

Cited by 12 publications

References 95 publications

Synthesis and Characterization of Fe-Doped CaTiO3 Polyhedra Prepared by Molten NaCl Salt

Synthesis and Characterization of Fe-Doped CaTiO3 Polyhedra Prepared by Molten NaCl Salt

Organocatalysis with carbon nitrides

One-Pot Synthesis of N-Doped NiO for Enhanced Photocatalytic CO2 Reduction with Efficient Charge Transfer

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