Z-scheme polyimide/tungsten trioxide aerogel photocatalyst for enhanced photocatalytic CO<sub>2</sub> reduction under visible light

Zhao, Xinfu; Yi, Xibin; Liu, Benxue; Yu, Shimo; Liu, Xiaochan

doi:10.1088/1361-6528/abf7ed

Cited by 7 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recycling CO 2 into value-added fuels through photocatalysis is one promising route for achieving the goal of being carbon-neutral [1][2][3]. During the process, diverse products such as CO, CH 3 OH, or CH 4 could be obtained under solar energy, ascribing to the transfer of multiple photoelectrons as well as the feeding of protons resulting from H 2 O oxidation by photogenerated holes [4].…”

Section: Introductionmentioning

confidence: 99%

Selectively triggering photoelectrons for CO₂ to CH₄ reduction over SrTiO₃ {110} facet with dual-metal sites

Lü¹,

Zhu²,

Wang³

et al. 2021

Nanotechnology

View full text Add to dashboard Cite

In this article, the roles of surface-active sites in dominating photoelectron selectivity for CO2 reduction products are well demonstrated over photocatalyst models of {100} SrTiO3 and {110} SrTiO3. On the easily exposed {100} facets terminated with Sr-O atoms, photoelectrons are of 8 mol % for CH4 and 92 mol % for CO generation. The Sr-O-Ti configuration in the {110} facets could enrich the surface charge density due to the lower interface resistance for higher photocatalytic efficiency (1.6-fold). The dual sites of Ti and adjacent Sr atoms are active for strong adsorption and activation of the generated CO* species from primary CO2 reduction on the surface, thus kinetically favoring the activity of photoelectrons (73 mol %) in hydrogenation for CH2* species and hence CH4 product. Inversely, the poor CH4 selectivity is due to difficulty in subsequent photoelectron reduction reaction by the weak adsorption of CO* at the single-Sr site on the {100} facets, independent of the electron and proton concentration. Our results may offer some illuminating insights into the design of a highly efficient photocatalyst for selective CO2 reduction.

show abstract

Section: Introductionmentioning

confidence: 99%

Selectively triggering photoelectrons for CO₂ to CH₄ reduction over SrTiO₃ {110} facet with dual-metal sites

Lü¹,

Zhu²,

Wang³

et al. 2021

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…A polyimide/WO 3 composite aerogel was used as a photocatalyst to reduce CO 2 . 235 The Z-scheme mechanism enhanced the activity at the interface of the two components, in which the photoexcited electrons in WO 3 were recombined with the holes in polyimide and left high energetic electrons in polyimide to reduce CO 2 . Doping Fe 3+ in TiO 2 aerogels reduced the bandgap of TiO 2 and suppressed the electron−hole pair recombination, which enhanced the photoreduction of CO 2 to methanol.…”

Section: Photocatalytic Water Splittingmentioning

confidence: 99%

“…The CO 2 reduction reaction was carried out either in a liquid medium or on the gas–solid catalyst surface. − Metal oxide-based aerogels were thoroughly studied for the photoreduction of CO 2 in a liquid medium. A polyimide/WO 3 composite aerogel was used as a photocatalyst to reduce CO 2 . The Z-scheme mechanism enhanced the activity at the interface of the two components, in which the photoexcited electrons in WO 3 were recombined with the holes in polyimide and left high energetic electrons in polyimide to reduce CO 2 .…”

Section: Photocatalytic Applications Of Metal Oxide Aerogelsmentioning

confidence: 99%

Synthesis and Photocatalysis of Metal Oxide Aerogels: A Review

Zhi

Tang

et al. 2022

Energy Fuels

View full text Add to dashboard Cite

Metal oxide aerogels have emerged as a new class of photocatalysts. As a type of 3-dimensional (3D) porous structure, an aerogel owns the characteristics of high specific surface area, tunable pore size, and large pore volume, which can distinguish itself from conventional powder or film counterparts. Such merits allow aerogels to expose more active catalytic sites and support other active cocatalysts. Metal oxide aerogels in a monolithic form also overcome the recycling and separation issues that hinder the application of free-standing powder photocatalysts. This article reviews the typical synthesis methodologies of metal oxide aerogels, including alkoxide hydrolysis and condensation, epoxide assistant, and self-assembly. It also discusses the interfacial charge and mass transfer processes in metal oxide aerogels and correlations among the composition, microstructure, and photocatalytic activity. In addition, this article gives a summary of photocatalytic applications of aerogels in water purification and sterilization, solar water splitting, and gas-phase reactions such as CO 2 reduction and CO oxidation. It also discusses the strategies for enhancing the performance of aerogel photocatalysts. In particular, this paper highlights the recent development of plasmonic aerogel photocatalysts.

show abstract

Shining Light on Carbon Aerogel Photocatalysts: Unlocking the Potentials in the Quest for Revolutionizing Solar‐to‐Chemical Conversion and Environmental Remediation

Wong,

Foo,

Siang

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

The past few years have witnessed a surge of interest in the development of carbon aerogel‐based photocatalysts, stemming from their fascinating characteristics that encompass the inherent properties of 2D carbon‐based nanomaterials and unique 3D structural features. Benefitting from their auspicious physicochemical characteristics, including low density, abundant active sites, and remarkable electrical conductivity, carbon aerogels have emerged as promising candidates for photocatalysis in energy and environmental applications. Thus, this review presents a panorama of state‐of‐the‐art advancements underlying the synthesis and modifications of carbon aerogel‐based nanocomposites for enhanced performance in photocatalytic applications. The synthetic strategies followed by the unique roles of carbon aerogel are highlighted to decipher the auspicious roles of carbon aerogels in bolstering photocatalytic activity. Additionally, the fundamental mechanism behind carbon aerogel‐based photocatalysts as well as their modifications are thoroughly discussed. Thereafter, the works on the photocatalytic applications of carbon aerogel in solar‐driven hydrogen evolution, CO2 reduction, pollutant decontamination, and bacteria inactivation, in the past 5 years are summarized with insights into charge dynamics being unveiled. Lastly, this review will prospect the ongoing challenges and future outlook of carbon aerogel‐based heterostructures in photocatalysis, aiming to facilitate the development of carbon aerogel‐based photocatalysts at the forefront of this research.

show abstract

Z-scheme polyimide/tungsten trioxide aerogel photocatalyst for enhanced photocatalytic CO₂ reduction under visible light

Cited by 7 publications

References 46 publications

Selectively triggering photoelectrons for CO₂ to CH₄ reduction over SrTiO₃ {110} facet with dual-metal sites

Selectively triggering photoelectrons for CO₂ to CH₄ reduction over SrTiO₃ {110} facet with dual-metal sites

Synthesis and Photocatalysis of Metal Oxide Aerogels: A Review

Shining Light on Carbon Aerogel Photocatalysts: Unlocking the Potentials in the Quest for Revolutionizing Solar‐to‐Chemical Conversion and Environmental Remediation

Contact Info

Product

Resources

About

Z-scheme polyimide/tungsten trioxide aerogel photocatalyst for enhanced photocatalytic CO2 reduction under visible light

Cited by 7 publications

References 46 publications

Selectively triggering photoelectrons for CO2 to CH4 reduction over SrTiO3 {110} facet with dual-metal sites

Selectively triggering photoelectrons for CO2 to CH4 reduction over SrTiO3 {110} facet with dual-metal sites

Synthesis and Photocatalysis of Metal Oxide Aerogels: A Review

Shining Light on Carbon Aerogel Photocatalysts: Unlocking the Potentials in the Quest for Revolutionizing Solar‐to‐Chemical Conversion and Environmental Remediation

Contact Info

Product

Resources

About

Z-scheme polyimide/tungsten trioxide aerogel photocatalyst for enhanced photocatalytic CO₂ reduction under visible light

Selectively triggering photoelectrons for CO₂ to CH₄ reduction over SrTiO₃ {110} facet with dual-metal sites

Selectively triggering photoelectrons for CO₂ to CH₄ reduction over SrTiO₃ {110} facet with dual-metal sites