A review on the recent development of bismuth-based catalysts for CO2 photoreduction

Pan, Qiangsheng; Wu, Yuanfeng; Su, Xiaoxiao; Yin, Yue; Shi, Shengbin; Oderinde, Olayinka; Yui, Guiyun; Zhang, Chuanxiang; Zhang, Yulong

doi:10.1016/j.molstruc.2023.136404

Cited by 6 publications

(2 citation statements)

References 171 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These are only examples, since the scope of this review is not a comprehensive discussion of the materials, but a focus on photoreactors. Many different examples of active materials can be found elsewhere for the interested reader [35][36][37].…”

Section: Fundamentals Of Heterogeneous Photocatalysis and Mechanismmentioning

confidence: 99%

Reactor and Plant Designs for the Solar Photosynthesis of Fuels

Degerli,

Gramegna,

Tommasi

et al. 2024

Energies

View full text Add to dashboard Cite

Solar-boosted photo-technology stands out as a powerful strategy for photosynthesis and photocatalytic processes due to its minimal energy requirements, cost-effectiveness and operation under milder, environmentally friendly conditions compared to conventional thermocatalytic options. The design and development of photocatalysts have received a great deal of attention, whereas photoreactor development must be studied deeper to enable the design of efficient devices for practical exploitation. Furthermore, scale-up issues are important for this application, since light distribution through the photoreactor is a concurrent factor. This review represents a comprehensive study on the development of photoreactors to be used mainly for the photoreduction of CO2 to fuels, but with concepts easily transferable to other photosynthetic applications such as ammonia synthesis and water splitting, or wastewater treatment, photovoltaics combined to photoreactors, etc. The primary categories of photoreactors are thoroughly examined. It is also explained which parameters influence the design of a photoreactor and next-generation high-pressure photoreactors are also discussed. Last but not least, current technologies for solar concentrators are recalled, considering their possible integration within the photoreactor. While many reviews deal with photocatalytic materials, in the authors’ view, photoreactors with significant scale and their merged devices with solar concentrators are still unexploited solutions. These are the key to boost the efficiency of these processes towards commercial viability; thus, the aim of this review is to summarise the main findings on solar photoreactors for the photoreduction of CO2 and for related applications.

show abstract

Section: Fundamentals Of Heterogeneous Photocatalysis and Mechanismmentioning

confidence: 99%

Reactor and Plant Designs for the Solar Photosynthesis of Fuels

Degerli,

Gramegna,

Tommasi

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…As for the wastewater treatment, the photocatalyst is a key factor in photocatalytic reaction. Bismuth tungstate (Bi 2 WO 6 ), as a typical aurivillius oxide, is becoming a new and efficient photocatalyst due to its nontoxic, natural abundance, high stability, excellent corrosion resistance, ease of preparation, and strong oxidation capacity. − However, its application is limited by certain drawbacks, including a limited range of light absorption (<450 nm), wide band gap, and fast electron–hole (e – –h + ) pair recombination rate . Therefore, many strategies have been used to enhance the treatment efficiency of pure Bi 2 WO 6 , such as ion doping, carrier coupling, heterojunction construction, and so on. − Among the above strategies, ion doping can adjust the electronic optical structure of the catalysts, extend the visible light response region and intensity, narrow the band gap, and quicken photoinduced carrier separation. − Hence, ion doping, as a convenient and promising method, has received increasing attention for enhancing the performance of photocatalysts. − In previous reports, Ce-doped Bi 2 WO 6 –BiOCl p–n heterojunction, Ce/N partially replaced W/O of Bi 2 WO 6 , and Ce–F–Bi 2 WO 6 nanoplates were designed and prepared for photocatalytic degradation of salicylic acid and rhodamine B (RhB).…”

Section: Introductionmentioning

confidence: 99%

Ce-Doped Nanosheet as Visible Light Photocatalyst for the Photocatalytic Degradation of Tetracycline Hydrochloride

Zhang,

Luo,

Sun

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

In this paper, a facile and efficient photocatalytic system for tetracycline hydrochloride (TCH) degradation is proposed. Ce-doped Bi2WO6 (Ce–Bi2WO6) nanosheets rich in oxygen vacancies were synthesized using a simple hydrothermal method and were systematically characterized. The results exhibited that a 10% Ce–Bi2WO6 (BWCe-10) catalyst with thinner and curling nanosheets was rich in oxygen vacancies, and the band gap was narrowed from 2.78 eV (Bi2WO6) to 1.61 eV, which was conducive to enhancing the photocatalytic activity of BWCe-10. As expected, BWCe-10 nanosheets exhibited much higher photocatalytic performance with 61.1% degradation of TCH within 40 min due to the formation of oxygen vacancies. Moreover, the addition of H2O2 further enhanced the TCH degradation efficiency and yielded a removal rate of 90.4%, revealing a strong synergistic effect between oxygen vacancies and H2O2 in the BWCe-10/H2O2/light system. As an electron acceptor, H2O2 boosts the separation rate of the photogenerated carriers, thereby improving the photocatalytic activity. Furthermore, the potential applications of the BWCe-10 nanosheet in terms of the effect of coexisting ions, stability, and universality were investigated. In addition, possible degradation mechanisms and pathways were proposed. In this system, h+ and e– played important roles in TCH degradation and followed the sequence h+/e– > •O2 – > •OH, and the formation of •OH and •O2 – was proved by ESR analysis. This simulated sunlight-driven system offers insights into the degradation of organic contaminants.

show abstract