3D bionic reactor optimizes photon and mass transfer by expanding reaction space to enhance photocatalytic CO2 reduction

Pan, Longkai; Zhang, Minggang; Yao, Liu; Jin, Zhipeng; Liu, Hongxia; Zhou, Shixiang; Yao, Ziyi; Zhu, Gangqiang; Cheng, Laifei; Zhang, Litong

doi:10.1016/j.seppur.2022.121974

Cited by 9 publications

(1 citation statement)

References 55 publications

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“…Photocatalytic CO 2 reduction is a surface catalytic reaction that occurs when light interacts with a surface, forming complex structures with more surface catalytically active sites preferable to bulk structures [14][15][16][17]. Extrusion-based additive manufacturing (EAM), which uses a nozzle to extrude material layer-by-layer from the bottom up, is a suitable technique for manufacturing parts with complex geometries, enabling e cient light absorption.…”

Section: Introductionmentioning

confidence: 99%

Extrusion-based additive manufacturing of three-dimensional MoSe2-nanosheet-coated TiO2 hetero-structures for photocatalytic CO2 reduction

Oh,

Charles,

et al. 2023

Int J Adv Manuf Technol

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Extrusion-based additive manufacturing (EAM) provides design freedom and facilitates the production of complicated structures that are often challenging to produce using conventional processing methods. In this study, a TiO 2 feedstock was developed by mixing TiO 2 with a binder and optimized for extrusion. To maximize the reaction e ciency, we fabricated three-dimensional (3D) structures for photocatalytic CO 2 reduction based on the designed model. To further enhance the photocatalytic CO 2 reduction e ciency, we introduced a heterostructure by hydrothermally synthesizing MoSe 2 , a transition metal dichalcogenide (TMD), on the TiO 2 surface. MoSe 2 , which is known for its affordability in fabrication heterostructures, high electrical conductivity, expanded light absorption range, and reduced bandgap, has the potential to enhance photocatalytic e ciency. The effectiveness of various TiO 2 -MoSe 2 3D structural designs for CO 2 reduction was evaluated. A custom-made stainless-steel reactor was used for CO 2 reduction under UV-vis irradiation, followed by gas chromatography analysis of the produced gases. The optimized structure exhibited remarkable CO 2 selectivity, reaching approximately 82%, demonstrating the feasibility of using EAM for fabricating 3D structures for photocatalytic CO 2 reduction.

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Section: Introductionmentioning

confidence: 99%

Extrusion-based additive manufacturing of three-dimensional MoSe2-nanosheet-coated TiO2 hetero-structures for photocatalytic CO2 reduction

Oh,

Charles,

et al. 2023

Int J Adv Manuf Technol

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Multiplying Light Harvest Driven by Hybrid‐Reflections 3D Electrodes Achieves High‐Availability Photo‐Charging Zinc‐Ion Batteries

Zhang

Pan

Jin

et al. 2023

Advanced Energy Materials

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batteries (SCs-REBs) systems provide a valuable solution for solar energy utilization. [2] However, the primary inherent defects of the SCs-REBs system, including high environmental selectivity and complex configuration, seriously weaken the efficiency and practicability. Thus, more innovative strategies and methods need to be proposed to improve environmental adaptability, continuous availability, and configuration simplification of solar energy or various clean energy harvest/ storage systems.Recently, some emerging battery systems that can be directly self-charged under light environments, called photocharging batteries (PCBs), have been developed. [3] PCBs offer more compact designs and continuous availability than the conventional SCs-REBs system. [4] The development of PCBs originated from an adequate understanding of the semiconducting properties and spontaneous reactions of some active materials in REBs. Gao et al. [3a] early reported a PCB based on a bifunctional TiO 2 /poly(3,4ethylenedioxy thiophene) (TiO 2 /PEDOT) electrode and LiClO 4 electrolyte. The TiO 2 /PEDOT electrode displayed a fast photocharging process due to the good optoelectronic properties of TiO 2 materials. However, this electrode exhibited an insufficient specific capacity (0.3 µAh cm −2 at 8.0 µA cm −2 ) because of the weak energy storage ability of TiO 2 /PEDOT in the LiClO 4 electrolyte. Volder et al. [3c] then constructed a photo-charging zinc ion battery (ZIB) consisting of a photoactive vanadium oxide cathode, aqueous electrolyte, and Zn anode. The photoactive cathode displays suitable bandgap energy for light harvest and high reversible capacity in aqueous ZIB. The specific capacity of the photo-charging ZIB was 0.75 mAh cm −2 at 0.01 mA cm −2 . Subsequently, a series of research for photocharging ZIBs, including shortening the photo-charging time, and increasing the specific capacity and open-circuit voltage, were investigated. [4,5] These improvements show promising potential for the application of photo-charging ZIBs. Furthermore, our previous research revealed that a spontaneous oxidation reaction existed in the VO 2 -based ZIB, thus realizing a self-charging behavior that can coexist with the photo-charging Independent photo-charging technologies based on aqueous zinc-ion batteries (ZIBs) are promising candidates for next-generation renewable energy systems. The conflict between light utilization and electrochemical performance in the planar electrode severely limits the availability of photocharging ZIBs. Herein, 3D light-trapping structures (LTSs) are proposed and applied in a rigid VO 2 /C@SiCuOC electrode. A hybrid-reflection effect driven by LTSs is employed to improve light-harvesting efficiency. The suitable energy levels of VO 2 and C ensure charge transport, while the rigid SiCuOC support meets the stability requirements. Such a 3D VO 2 /C@SiCuOC electrode exhibits a multiplying photo-response current density of 42.2 µA cm −2 (≈400% of the plate) and delivers a higher energy density (0.19 mWh cm −2 at 0.51 m...

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Characterization and enhancement of quasi-static and shear mechanical properties of 3D printed lightweight SiOC lattices: Effects of structural design and parameters

Shi

Yang

Mei

et al. 2023

Journal of the European Ceramic Society

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3D bionic reactor optimizes photon and mass transfer by expanding reaction space to enhance photocatalytic CO2 reduction

Cited by 9 publications

References 55 publications

Extrusion-based additive manufacturing of three-dimensional MoSe2-nanosheet-coated TiO2 hetero-structures for photocatalytic CO2 reduction

Extrusion-based additive manufacturing of three-dimensional MoSe2-nanosheet-coated TiO2 hetero-structures for photocatalytic CO2 reduction

Multiplying Light Harvest Driven by Hybrid‐Reflections 3D Electrodes Achieves High‐Availability Photo‐Charging Zinc‐Ion Batteries

Characterization and enhancement of quasi-static and shear mechanical properties of 3D printed lightweight SiOC lattices: Effects of structural design and parameters

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