Confined synthesis of BiVO<sub>4</sub> nanodot and ZnO cluster co-decorated 3DOM TiO<sub>2</sub> for formic acid production from the xylan-based hemicellulose photorefinery

Zhao, Heng; Yu, Xinti; Hu, Guichun; Zhong, Na; Hu, Zhi‐Yi; Larter, Stephen R.; Li, Yu; Kibria, Golam; Hu, Jinguang

doi:10.1039/d1gc02150h

Cited by 8 publications

(11 citation statements)

References 37 publications

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“…In terms of light harvesting, the hierarchically porous structure stands out due to the multiple scattering effect, prolonging the interaction between incident photons with photocatalytic materials [20][21][22] . Three-dimensionally ordered macroporous (3DOM) structure has been extensively applied in photocatalytic applications because of its outstanding competence in improving light absorption and facilitating mass diffusion [23][24][25][26] . Our previous investigation has revealed the significant promotion in photocatalytic H 2 production by CaTiO 3 perovskite with 3DOM structure and carbon quantum dots as cocatalysts, which exhibited comparable activity as 3DOM CaTiO 3 -Au [27] .…”

Section: Introductionmentioning

confidence: 99%

Photothermal catalytic H2 production over hierarchical porous CaTiO3 with plasmonic gold nanoparticles

Yu¹,

Yu²,

Zhao³

et al. 2023

Chem Synth

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The synergistic promotion by photocatalysis and thermocatalysis is a promising approach for sustainable hydrogen (H2) production. Herein, we rationally design a perovskite-based catalyst with three-dimensionally ordered macroporous structure (3DOM CaTiO3-Au) for photothermal catalytic H2 production from different substrates. The hierarchical 3DOM structure facilitates light harvesting and mass diffusion of the substrates, while the gold nanoparticles (Au NPs) promote charge separation. The photogenerated and hot electrons are oriented accumulated on the surface of Au NPs. The non-metallic gold species [Au(I)] show more activity for H2 evolution. As a result, 3DOM CaTiO3-Au exhibits excellent activity for H2 production from glycerol and other substrates with hydroxyl groups. The present work demonstrates a feasible approach to improve sustainable H2 production by rationally designing and fabricating efficient photothermal catalysts.

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Section: Introductionmentioning

confidence: 99%

Photothermal catalytic H2 production over hierarchical porous CaTiO3 with plasmonic gold nanoparticles

Yu¹,

Yu²,

Zhao³

et al. 2023

Chem Synth

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“…until mineralization is complete and products like formic acid, carbon dioxide, carbon monoxide, and hydrogen are obtained. 74,75 This emphasizes the importance of cOH produced during the photocatalytic process as shown in Fig. 4b.…”

Section: Papermentioning

confidence: 72%

Cellulose as sacrificial agents for enhanced photoactivated hydrogen production

Alvarado-Ávila

Luca

Edlund

et al. 2023

Sustainable Energy Fuels

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“…The presence of accumulated mesopores at the grain boundaries trapped the precursors and formed BiVO 4 nano dots and ZnO clusters. [ 262 ] The quantum sized BiVO 4 along with the formation of heterojunction in the composites exhibited excellent activity to break β‐1,4‐glycosidic linkages of xylan in hemicellulose from wheat straw to produce xylose and formic acid ( Figure 14 ). The confinement effect of hierarchically porous materials not only helps to prepare specific photocatalysts but also provides shape‐selective catalysis.…”

Section: Advantages Of Hierarchically Porous Materialsmentioning

confidence: 99%

“…Our group conducted a series of investigation about using hierarchically porous materials for selective biomass photoreforming. [129,209,262] Inspired by the natural photosynthesis, a hierarchically 3DOM TiO 2 -Au-CdS ternary photocatalyst was well designed and fabricated (Figure 13). It possessed both ordered macropore and accumulated mesopore.…”

Section: Large Surface Area To Provide Abundant Active Sitesmentioning

confidence: 99%

“…Figure 14. a) Schematic illustration of the confined synthesis of composite photocatalyst, b) HR-TEM image of the as-fabricated photocatalyst (dotted white circles represent BiVO 4 nanodots and solid white circles represent ZnO clusters)), c) proposed mechanism of wheat straw photoreforming into formic acid. Reproduced with permission [262]. Copyright 2021, The Royal Society of Chemistry.…”

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Biomass Photoreforming for Hydrogen and Value‐Added Chemicals Co‐Production on Hierarchically Porous Photocatalysts

Zhao

Liu

Zhong

et al. 2023

Advanced Energy Materials

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technologies to utilize renewable energy sources such as wind, solar, geothermal, and biomass is highly desired to maintain the harmonious, sustained, and steady development of human civilization. [1][2][3] Biomass, a most widely abundant and easily accessible natural resource have already supported mankind for thousands of years. [4][5][6] Until now, biomass is still supplying ≈25% of global energy and it has been widely recognized as one of the most important energy source in the future. [7][8][9][10] The first-generation biofuels such as bioethanol generated from carbohydrates in corn and wheat have already made huge contribution to the global economies. However, drawbacks are from the huge consumption of food crops during the production procedure, which exacerbates food shortage problem. [11][12][13] The secondgeneration biofuels are derived from various types of non-food feedstocks such as lignocellulosic biomass and wastes, which holds great potential to sustainably produce fuels and value-added chemicals along with addressing environmental issues and without competing with food reserves. [14][15][16] Lignocellulosic biomass consisting of polysaccharides (cellulose and hemicellulose) and aromatic polymers (lignin) comprises more than 50% of total organic matter on earth. [5] Developing efficient technologies to convert lignocellulosic biomass into high-intensity fuels and platform Biomass, a naturally abundant, sustainable and clean resource has great potential as an alternative to replace the limited fossil feedstock for valueadded chemicals and fuels. Biomass with abundant reductive functional groups could theoretically act as electron donor to consume photogenerated holes and/or active free radicals. Biomass photoreforming over semiconductor photocatalysts using solar light as energy input attracts much attention in this context. However, biomass photoreforming still suffers low conversion efficiency and product selectivity due to its structural complexity, poor solubility and unclear reaction mechanism. Owing to the advanced features of mass diffusion of biomass derivatives and adjustable surface properties, hierarchically porous photocatalysts with desired active sites at each length scale of porosity have shown their superiority in boosting the conversion efficiency and selectivity of biomass photoreforming. Herein, a critical review is presented on selective biomass photoreforming for simultaneous H 2 and value-added chemicals co-production on hierarchically porous photocatalysts. The fundamentals of biomass photoreforming and current bottleneck of biomass valorization by photocatalytic process are presented and analyzed. The rational photocatalyst design with hierarchically porous structure to improve the biomass conversion and product selectivity by boosting mass transfer is highlighted. Finally the challenges and opportunities for photocatalytic biomass valorization are presented in the perspective ssection.

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Confined synthesis of BiVO₄ nanodot and ZnO cluster co-decorated 3DOM TiO₂ for formic acid production from the xylan-based hemicellulose photorefinery

Abstract: Biomass photorefinery provides a promising strategy for value-added chemical production from natural feedstocks. Herein, we designed and fabricated three-dimensionally ordered macroporous (3DOM) ternary composite for the photoreforming of hemicellulose and...

Cited by 8 publications

References 37 publications

Photothermal catalytic H2 production over hierarchical porous CaTiO3 with plasmonic gold nanoparticles

Photothermal catalytic H2 production over hierarchical porous CaTiO3 with plasmonic gold nanoparticles

Cellulose as sacrificial agents for enhanced photoactivated hydrogen production

Biomass Photoreforming for Hydrogen and Value‐Added Chemicals Co‐Production on Hierarchically Porous Photocatalysts

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Confined synthesis of BiVO4 nanodot and ZnO cluster co-decorated 3DOM TiO2 for formic acid production from the xylan-based hemicellulose photorefinery

Abstract: Biomass photorefinery provides a promising strategy for value-added chemical production from natural feedstocks. Herein, we designed and fabricated three-dimensionally ordered macroporous (3DOM) ternary composite for the photoreforming of hemicellulose and...

Cited by 8 publications

References 37 publications

Photothermal catalytic H2 production over hierarchical porous CaTiO3 with plasmonic gold nanoparticles

Photothermal catalytic H2 production over hierarchical porous CaTiO3 with plasmonic gold nanoparticles

Cellulose as sacrificial agents for enhanced photoactivated hydrogen production

Biomass Photoreforming for Hydrogen and Value‐Added Chemicals Co‐Production on Hierarchically Porous Photocatalysts

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Confined synthesis of BiVO₄ nanodot and ZnO cluster co-decorated 3DOM TiO₂ for formic acid production from the xylan-based hemicellulose photorefinery