Cerium-based metal sulfide derived nanocomposite-embedded rGO as an efficient catalyst for photocatalytic application

Kandhasamy, Narthana; Murugadoss, Govindhasamy; Thiruppathi, K.; Kirubaharan, A.M. Kamalan; Kumar, Manavalan Rajesh; Ramalingam, G.

doi:10.1007/s11356-022-24311-y

Cited by 14 publications

(3 citation statements)

References 87 publications

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“…In the Ce 2 S 3 spectrum, distinct peaks are associated with surface hydroxyl groups (O–H) around 3350 cm –1 . The presence of sulfur is indicated by the stretching vibration at approximately 1640 cm –1 with a strong peak at 1385 cm –1 corresponding to the Ce–S bond stretching vibration and a weaker peak at 1124 cm –1 corresponding to the S–H pulling stretch mode . In the TiO 2 spectrum, a band between 500 and 800 cm –1 signifies the Ti–O–Ti bending vibration bond within the TiO 2 lattice.…”

Section: Resultsmentioning

confidence: 84%

“…The presence of sulfur is indicated by the stretching vibration at approximately 1640 cm −1 with a strong peak at 1385 cm −1 corresponding to the Ce−S bond stretching vibration and a weaker peak at 1124 cm −1 corresponding to the S−H pulling stretch mode. 21 In the TiO 2 spectrum, a band between 500 and 800 cm −1 signifies the Ti−O−Ti bending vibration bond within the TiO 2 lattice. Furthermore, the peak observed at 1653 cm −1 represents the Ti−OH stretching vibration, while a broader band observed in the range of 3300− 3500 cm −1 signifies the stretching vibration of surface hydroxyl groups (O−H) on TiO 2 nanorods.…”

Section: Resultsmentioning

confidence: 99%

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Harnessing the Synergistic Power of Ce₂S₃/TiO₂ S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Liao,

Zhou,

Chen

et al. 2024

ACS Catal.

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In the context of achieving carbon neutrality, converting lignin-derived molecules into high-value products through photocatalytic technology provides an environmentally friendly pathway. Establishing energy-efficient processes for converting lignin derivatives requires the construction of highly active and selective photocatalysts. However, enhancing the efficiency and selectivity of photocatalysts for lignin degradation poses an ongoing challenge due to discrepancies in the redox potential and the rapid recombination of photogenerated carriers. To address these significant obstacles, we devised an innovative strategy by developing a Ce 2 S 3 nanoparticle-anchored TiO 2 nanorod (Ce 2 S 3 /TiO 2 ). This advanced photocatalyst with the S-scheme heterojunction, enabling simultaneous control of carrier dynamics and band structure, was used to study the photocatalytic degradation of the lignin model compound 2phenoxy-1-acetophenone. Moreover, the photocatalyst can cleave the C β -O-4 bond selectively to convert the lignin model compound 2-phenoxy-1-acetophenone into phenol and acetophenone under visiblelight irradiation. The yields are up to 94 and 80%, respectively, and 94 or 1.4 times greater than those obtained by pure TiO 2 or Ce 2 S 3 individually. In addition, our study for the increased activity in Ce 2 S 3 /TiO 2 based on density functional theory calculations emphasizes the pivotal role of the S-scheme heterojunction generated between Ce 2 S 3 and TiO 2 . This heterojunction significantly enhances carrier separation efficiency, thereby augmenting the efficacy of the photocatalytic process. The findings furnish valuable insights for developing advanced photocatalytic systems tailored to the efficient depolymerization of C β -O-4 bonds in lignin.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Harnessing the Synergistic Power of Ce₂S₃/TiO₂ S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Liao,

Zhou,

Chen

et al. 2024

ACS Catal.

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“…These results confirmed the simultaneous presence of Ce 3+ and Ce 4+ oxidation states on the interface of the composite electrode, and are also consistent with the data reported in previous studies. [29,35] The Ce 4+ oxidation state may result from the formation of rich cerium vacancy defects (oxidation of Ce 3+ to Ce 4+ ) on the surface of the Ce 2 S 3 materials, which results in an efficient charge trans-fer effect between ZnO and Ce 2 S 3 , improving the supercapacitive and photoresponsive abilities of the ZnO@Ce 2 S 3 /NF composite electrode. [36] The spectrum of S 2p (Figure 2f) could be divided into two peaks exhibited at 163.9 and 162.2 eV, which are ascribed to S 2p 1/2 and S 2p 3/2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Heterogeneous Structures Consisting of Rod‐like ZnO Interspersed with Ce₂S₃ Nanoparticles for Photo‐Sensitive Supercapacitors with Enhanced Capacitive Performance

Long,

Li,

Luo

et al. 2023

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Photosensitive supercapacitors incorporate light‐sensitive materials on capacitive electrodes, enabling solar energy conversion and storage in one device. In this study, heterogeneous structures of rod‐shaped ZnO decorated with Ce2S3 nanoparticles on nickel foam (ZnO@Ce2S3/NF) are synthesized using a two‐step hydrothermal method as photosensitive supercapacitor electrodes for capacitance enhancement under visible light. The formation of ZnO@Ce2S3 heterogeneous structures is confirmed using various structural characterization techniques. The area‐specific capacitance of the ZnO@Ce2S3/NF composite electrode increased from 1738.1 to 1844.0 mF cm−2 after illumination under a current density of 5 mA cm−2, which is 2.4 and 2.8 times higher than that of ZnO and Ce2S3 electrodes under similar conditions, respectively, indicating the remarkable light‐induced capacitance enhancement performance. The ZnO@Ce2S3/NF electrode also exhibits a higher photocurrent and photovoltage than the two single electrodes, demonstrating its excellent photosensitivity. The improved capacitance performance and photosensitivity under illumination are attributed to the well‐constructed energy‐level structure, which stimulates the flow of photogenerated electrons from the outer circuit and the involvement of photogenerated holes in the resulting surface‐controlled capacitance. In addition, the assembled ZnO@Ce2S3/NF‐based hybrid supercapacitor exhibits a great energy density of 145.0 mWh cm−2 under illumination. This study provides a novel strategy for the development of high‐performance solar energy conversion/storage devices.

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Metal sulphides and their heterojunctions for photocatalytic degradation of organic dyes-A comprehensive review

Gadore

Mishra

Ahmaruzzaman

2023

Environ Sci Pollut Res

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Cerium-based metal sulfide derived nanocomposite-embedded rGO as an efficient catalyst for photocatalytic application

Cited by 14 publications

References 87 publications

Harnessing the Synergistic Power of Ce₂S₃/TiO₂ S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Harnessing the Synergistic Power of Ce₂S₃/TiO₂ S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Heterogeneous Structures Consisting of Rod‐like ZnO Interspersed with Ce₂S₃ Nanoparticles for Photo‐Sensitive Supercapacitors with Enhanced Capacitive Performance

Metal sulphides and their heterojunctions for photocatalytic degradation of organic dyes-A comprehensive review

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Cerium-based metal sulfide derived nanocomposite-embedded rGO as an efficient catalyst for photocatalytic application

Cited by 14 publications

References 87 publications

Harnessing the Synergistic Power of Ce2S3/TiO2 S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Harnessing the Synergistic Power of Ce2S3/TiO2 S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Heterogeneous Structures Consisting of Rod‐like ZnO Interspersed with Ce2S3 Nanoparticles for Photo‐Sensitive Supercapacitors with Enhanced Capacitive Performance

Metal sulphides and their heterojunctions for photocatalytic degradation of organic dyes-A comprehensive review

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Harnessing the Synergistic Power of Ce₂S₃/TiO₂ S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Harnessing the Synergistic Power of Ce₂S₃/TiO₂ S-Scheme Heterojunctions for Profound C–O Bond Cleavage in Lignin Model Compounds

Heterogeneous Structures Consisting of Rod‐like ZnO Interspersed with Ce₂S₃ Nanoparticles for Photo‐Sensitive Supercapacitors with Enhanced Capacitive Performance