Highly efficient metal-free catalyst from cellulose for hydrogen peroxide photoproduction instructed by machine learning and transient photovoltage technology

Liu, Yan; Wang, Xiao; Zhao, Yajie; Wu, Qi‐Hui; Nie, Haodong; Si, Honglin; Huang, Hui; Shao, Mingwang; Kang, Zhenhui

doi:10.1007/s12274-022-4111-2

Cited by 33 publications

(16 citation statements)

References 45 publications

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“…Carbon dots (CDs) have both remarkable light-harvesting and electron-transfer/reservoir abilities, which may act as an important component of the microreactor. 18–24 With CDs in a microreactor system, the transportation of photogenerated electrons in the encapsulation system will become faster and more efficient. 25 CDs as electron storage containers may capture more electrons from the semiconductor catalyst and regulate the local charge distribution, thus acquiring more electrons to produce CH 4 .…”

Section: Introductionmentioning

confidence: 99%

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn₂S₄/TiO₂ microcapsules for efficient CO₂ photoreduction

Liang

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn₂S₄/TiO₂ microcapsules for efficient CO₂ photoreduction

Liang

et al. 2022

J. Mater. Chem. A

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“…Other values cannot be treated as actual values. [51] Copyright 2022, Springer Nature. b) TPV of maximum extraction rate of the charge and charge extraction process for SnS 2 /In 2 S 3 and SnS 2 /In 2 S 3 /CDs.…”

Section: The Fundamental Principle For Tpv Techniquementioning

confidence: 99%

“…Reproduced with permission. [51] Copyright 2022, Springer Nature. less than zero, which implied the presence of electron trapping effects with strong interfacial electron capture which resulted in slower electron transfer from the catalyst surface and promoted 2e − ORR.…”

Section: Tpv In Electrocatalytic Production Of H 2 Omentioning

confidence: 99%

Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

Zhou

Tan

et al. 2023

Advanced Energy Materials

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H2O2 plays an irreplaceable role in many aspects of human society, such as paper bleaching, medical disinfection, wastewater treatment, organic synthesis, hydrometallurgy and the electronic industry. However, the unsustainability of the current industrial production process of traditional anthraquinone has a serious conflict with the green sustainable development. The photo/electrocatalytic H2O2 production from renewable energy has the advantages of being more economical, low‐carbon and green, and in line with the requirements of energy economy. These catalytic methods of green H2O2 production have played a demonstrative role in the development of many small molecules, contributing to a fundamental understanding of general catalysis and providing a scientific perspective for future new energy cycles. In this review, the authors aim to integrate the reaction process and mechanism of photocatalytic and electrocatalytic H2O2 production, summarize the development and application of photocatalytic and electrocatalytic H2O2 production in recent years, and assess the modern technologies promoted in the process of H2O2 production research, including the development of flux production equipment and reaction coproduction, etc. This review intends to provide a clear logic profile and new directions for the development of H2O2 production, and calls for more researchers to provide more insights into the development of this field.

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“…This method featured transient voltage in response to photoelectrical stimulation, which reveals the detailed process of transmission, storage, and recombination of the photogenerated charge or hole (Figure 8A). A TPV curve (Figure 8B), 33 which covers reaction time ranging from microsecond to second scales, can be acquired by this method. Through comparison of the parameters such as the maximum intensity, the shape of the curves, the time of the maximum intensity, the integral area, and the attenuation constant, we can obtain the interfacial electron transport kinetics and in situ catalytic process reaction kinetics (Figure 8C).…”

Section: Transient Photoinduced Voltage (Tpv)mentioning

confidence: 99%

Diversity and Tailorability of Photoelectrochemical Properties of Carbon Dots

2022

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Conspectus As a new kind of carbon based functional material, carbon dots (CDs) have sparked much interest in recent years. The tunable structure, composition, and morphology of CDs unlocks opportunities to enable diversity in their photoelectrochemical properties, and thus they show great potential in various applications such as biology, catalysis, sensors, and energy storage. Nevertheless, the related understanding of CDs is insufficient at present due to their inherent complexity of microstructure, which involves the intersection of high polymer, bulk carbon, and quantum dot (QD). A good understanding of the underlying mechanism behind the properties of CDs is still a formidable challenge, requiring the integration of robust knowledge from organic chemistry, materials science, and solid state physics. Within this context, discovering more appealing properties, elucidating fundamental factors that affect the properties and proposing effective engineering strategies that can realize specific functions for CDs are now highly pursued by researchers. At the beginning of this Account, the main features of CDs are introduced, where not only the basic structural, compositional and morphological characteristics but also the rich photoelectrochemical properties are elucidated, among which the band gap, chirality, photoinduced potential, and electron sink effect are particularly emphasized. Furthermore, new analysis techniques including transient photoinduced current (TPC), transient photoinduced voltage (TPV), and machine learning (ML) to reveal the unique properties of CDs are described. Then, several appealing strategies that aim to rationally tailor CDs for oriented applications are highlighted. These regulation strategies are morphology modulation (e.g., developing CDs with new geometrical configuration, controlling the particle size), phase engineering (e.g., altering the phase crystallinity, introducing the foreign atoms), surface functionalization (e.g., grafting various types of functional groups), and interfacial tuning (e.g., building CD-based nanohybrids with well-defined interfaces). Although the fundamental investigation of CDs is relatively undeveloped because of their complexity, this does not hinder their wide application. At the same time, exploring the extensive applications of CDs will promote their in-depth understanding. Finally, the chances for building a CD-centered blueprint for sustainable society are explored and challenges for future research in the field of CDs are proposed as follows: (i) the controllable synthesis of CDs with uniform size; (ii) search for novel CDs with unique structure, morphology, or composition; (iii) quantitative understanding of the property of CDs; (iv) performance enhancement by external forces such as magnetism or heat injection; (v) construction of the dual carbon concept; (vi) further research on different photocatalytic applications. On the whole, this Account may provide meaningful references for the understanding of the microstructure–property correlation as w...

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Highly efficient metal-free catalyst from cellulose for hydrogen peroxide photoproduction instructed by machine learning and transient photovoltage technology

Cited by 33 publications

References 45 publications

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn₂S₄/TiO₂ microcapsules for efficient CO₂ photoreduction

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn₂S₄/TiO₂ microcapsules for efficient CO₂ photoreduction

Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

Diversity and Tailorability of Photoelectrochemical Properties of Carbon Dots

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Highly efficient metal-free catalyst from cellulose for hydrogen peroxide photoproduction instructed by machine learning and transient photovoltage technology

Cited by 33 publications

References 45 publications

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn2S4/TiO2 microcapsules for efficient CO2 photoreduction

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn2S4/TiO2 microcapsules for efficient CO2 photoreduction

Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

Diversity and Tailorability of Photoelectrochemical Properties of Carbon Dots

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Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn₂S₄/TiO₂ microcapsules for efficient CO₂ photoreduction

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn₂S₄/TiO₂ microcapsules for efficient CO₂ photoreduction