Fabrication of inverse opal TiO2-supported Au@CdS core–shell nanoparticles for efficient photocatalytic CO2 conversion

Wei, Yuechang; Jiao, Jinqing; Zhao, Zhen; Liu, Jian; Li, Jianmei; Jiang, Guiyuan; Wang, Yajun; Duan, Aijun

doi:10.1016/j.apcatb.2015.05.041

Cited by 122 publications

(63 citation statements)

References 47 publications

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“…This work highlights the promise of integrating plasmonic metals with semiconductor heterojunction structures for the efficient generation, transfer, and separation of charge carriers. Moreover, the combination of Au nanoparticles with semiconductor heterojunctions in the form of the Z‐scheme has been reported to enhance the photocatalytic CO 2 reduction activity . An all‐solid‐state Z‐scheme system with (CdS semishell)–(Au core)–(TiO 2 support) nanojunctions has been fabricated through a gas bubbling‐assisted membrane reduction‐precipitation method.…”

Section: Current Progressmentioning

confidence: 99%

Emerging Applications of Plasmons in Driving CO₂ Reduction and N₂ Fixation

et al. 2018

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The photochemical production of fuels using sunlight is an innovative way for meeting the quickly increasing energy demands. One of the largest challenges is to develop high-performance photocatalysts that can meet the requirements of practical applications. Owing to their intriguing localized surface plasmon resonances, noble metal nanoparticles and nanostructures show a great potential for enhancing the photocatalytic efficiency and thereby have attracted rapidly growing interest recently. Here, for the first time, the latest achievements in the utilization of plasmons in driving CO reduction and N fixation into high-value products are comprehensively described. The involved plasmonic enhancement mechanisms in the two types of reactions are fully illustrated. A particular emphasis is given to the outlook on the direction and prospects for future work in this topic.

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Section: Current Progressmentioning

confidence: 99%

Emerging Applications of Plasmons in Driving CO₂ Reduction and N₂ Fixation

et al. 2018

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“…[25] In our previous work, we already studied TiO 2 inverse opals with differents top bands produced by using spheres with adjusted sizes as template. [26] Moreover, we illustrated that photonic crystals could achieve considerably Photonic crystals can delay the propagation of light and increase its path length through as low-light effect, which could have immense potential in improving photocatalytic conversion efficiencies.W ee mployed ac olloidal crystal template methodt os ynthesize TiO 2 photonic crystals (PC-TiO 2 ), with platinumn anoparticles (Pt NPs) being deposited on the surface of the PC-TiO 2 support at differentl oading amounts by the gas bubbling-assisted membrane reduction (GBMR) method. As eries of Pt/PC-TiO 2 photocatalysts with well-defined inverse-opal structure have uniform Pt NPs (about 2.5 nm) homogeneously dispersed on the pore walls of the support.…”

Section: Introductionmentioning

confidence: 94%

Platinum Nanoparticles Supported on TiO₂ Photonic Crystals as Highly Active Photocatalyst for the Reduction of CO₂ in the Presence of Water

et al. 2017

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Photonic crystals can delay the propagation of light and increase its path length through a slow‐light effect, which could have immense potential in improving photocatalytic conversion efficiencies. We employed a colloidal crystal template method to synthesize TiO2 photonic crystals (PC‐TiO2), with platinum nanoparticles (Pt NPs) being deposited on the surface of the PC‐TiO2 support at different loading amounts by the gas bubbling‐assisted membrane reduction (GBMR) method. A series of Pt/PC‐TiO2 photocatalysts with well‐defined inverse‐opal structure have uniform Pt NPs (about 2.5 nm) homogeneously dispersed on the pore walls of the support. The slow‐light effect of photonic crystals effectively enhances the absorption efficiency of solar irradiation. Moreover, the Pt deposition significantly extends the spectral response and reduces the recombination rates of photoinduced electron–hole pairs. As a result, the Ptx/PC‐TiO2 catalysts exhibit excellent photocatalytic activity for the reduction of CO2 in the presence of H2O. In addition, we propose a reaction mechanism for the photoreduction of CO2 under light irradiation.

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“…(1) [57,64,65] . According to the related literatures [34,66,67] , the group velocity of light could dramatically reduce at the edges of stop-band and result in the appearance of slow photons. Especially, the red-edge of stop-band for inverse opals is thought to be more important in photocatalysis because of the relative higher refractive index of skeletal material.…”

Section: The Slow Photon Effect On the Efficiency Of Photocatalytic Hmentioning

confidence: 99%

“…For the second sample, named as Pt/CdS/Au/3DOM-SrTiO3(300), Pt nanoparticles (0.7wt%) were in situ photodeposited on the surface of CdS via a UV-Vis light driven Z-scheme process over CdS/Au/3DOM-SrTiO3(300) photocatalyst [33,34,38] . As seen in Figure 10, the decoration of Pt nanoparticles can significantly increase the hydrogen evolution rate of the CdS/Au/3DOM-SrTiO3(300) composite.…”

Section: Cds/au/3dom-srtio3 Photocatalystsmentioning

confidence: 99%

“…Moreover, the surface plasmon resonance (SPR) of metal nanoparticles arising from the collective oscillation of electrons in the metallic nanostructure could also improve the performance of photocatalysts through hot electron transfer [25][26][27][28][29][30][31] . Many researchers had attempted to fabricate the ternary composites using two semiconductors and one noble metal, such as Au/CdS/TiO2 [23,[32][33][34][35][36][37] , Au/CdS/WO3 [38,39] , Pt/CdS/TiO2 [40][41][42][43][44][45] , and Au/CdS/ZnO [46][47][48] . However, improving the light harvesting efficiency through a special nanostructure design is still an attractive research field.…”

Section: Introductionmentioning

confidence: 99%

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Ternary CdS/Au/3DOM-SrTiO 3 composites with synergistic enhancement for hydrogen production from visible-light photocatalytic water splitting

Chang

Zhang

et al. 2017

Applied Catalysis B: Environmental

103

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New ternary composites based on three dimensionally ordered macroporous (3DOM) SrTiO3 (CdS/Au/3DOM-SrTiO3) were prepared and used as photocatalysts in visible light (λ > 420 nm) photocatalytic water splitting for hydrogen evolution.Through optimizing the pore size of 3DOM-SrTiO3 materials and the loading amounts of Au and CdS, CdS/Au/3DOM-SrTiO3(300), templated by 300 nm sized poly(methyl methacrylate) colloids, was found to exhibit a remarkably enhanced photocatalytic hydrogen evolution rate (2.74 mmol/h•g), which was 3.2 times as high as that of CdS/Au/C-SrTiO3 catalyst based on commercial SrTiO3. This notably enhanced photocatalytic performance was mainly attributed to the slow photon enhancement effect of 3DOM-SrTiO3(300) material, which significantly promoted the light harvesting efficiency of ternary composite for the slow photon region of 3DOM-SrTiO3(300) was well matched with the optical absorption band of photocatalyst. Further depositing Pt nanoparticles on CdS/Au/3DOM-SrTiO3(300) composite as a co-catalyst, an extraordinarily high hydrogen evolution rate (up to 5.46 mmol/g•h) and apparent quantum efficiency (42.2% at 420 nm) were achieved because of the synergistic effect of efficient carrier separation, Au SPR effect, and slow photon effect. Furthermore, these ternary CdS/Au/3DOM-SrTiO3 composite photocatalysts were very stable and could be easily recycled four times in visible light photocatalytic water splitting experiments without any loss in activity.3 Keywords Three-dimensionally ordered macroporous material; CdS/Au/3DOM-SrTiO3; Ternary composite; Hydrogen production from water splitting; Slow photon effect.4

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Fabrication of inverse opal TiO2-supported Au@CdS core–shell nanoparticles for efficient photocatalytic CO2 conversion

Cited by 122 publications

References 47 publications

Emerging Applications of Plasmons in Driving CO₂ Reduction and N₂ Fixation

Emerging Applications of Plasmons in Driving CO₂ Reduction and N₂ Fixation

Platinum Nanoparticles Supported on TiO₂ Photonic Crystals as Highly Active Photocatalyst for the Reduction of CO₂ in the Presence of Water

Ternary CdS/Au/3DOM-SrTiO 3 composites with synergistic enhancement for hydrogen production from visible-light photocatalytic water splitting

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Fabrication of inverse opal TiO2-supported Au@CdS core–shell nanoparticles for efficient photocatalytic CO2 conversion

Cited by 122 publications

References 47 publications

Emerging Applications of Plasmons in Driving CO2 Reduction and N2 Fixation

Emerging Applications of Plasmons in Driving CO2 Reduction and N2 Fixation

Platinum Nanoparticles Supported on TiO2 Photonic Crystals as Highly Active Photocatalyst for the Reduction of CO2 in the Presence of Water

Ternary CdS/Au/3DOM-SrTiO 3 composites with synergistic enhancement for hydrogen production from visible-light photocatalytic water splitting

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Emerging Applications of Plasmons in Driving CO₂ Reduction and N₂ Fixation

Emerging Applications of Plasmons in Driving CO₂ Reduction and N₂ Fixation

Platinum Nanoparticles Supported on TiO₂ Photonic Crystals as Highly Active Photocatalyst for the Reduction of CO₂ in the Presence of Water