Immobilization of photocatalytic materials for (waste)water treatment using 3D printing technology – advances and challenges

Xue, Yongtao; Kamali, Mohammadreza; Zhang, Xi; Askari, Najmeh; Preter, Clem De; Appels, Lise; Dewil, Raf

doi:10.1016/j.envpol.2022.120549

Cited by 33 publications

(13 citation statements)

References 136 publications

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“…At its core, 3D printing leverages computer-aided design (CAD) models, which guide the additive deposition of materials. This process allows the fabrication of complex structures that would be difficult to achieve using conventional techniques . Within the realm of wastewater treatment, this versatility has yielded innovative outcomes.…”

Section: Micro and Nanomanufacturing Techniquesmentioning

confidence: 99%

Recent Advances in Advanced Micro and Nanomanufacturing for Wastewater Purification

Verma,

Mondal,

Islam

et al. 2024

ACS Appl. Eng. Mater.

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Amid global concerns over water scarcity and escalating environmental pollution, there has been a surge in research and innovation for pioneering wastewater purification technologies. Advanced micro and nanomanufacturing methods emerge as promising avenues to enhance conventional treatment efficiency. This review guides readers through recent advancements, merging precision engineering at micro/nanoscales with water treatment intricacies, yielding transformative solutions. Exploring lithography-based techniques, additive manufacturing, self-assembly, and microfluidics, it uncovers diverse approaches crafting materials to interact with and neutralize pollutants. The manuscript navigates the fusion of micro/nanomanufacturing with the urgent global need for clean water. By showcasing empowered materials surpassing traditional treatment, it tackles expanding pollutant challenges. Beyond compiling breakthroughs, this review seeks to inspire future research by illuminating how precision manufacturing can address water treatment, holding the potential to combat scarcity and pollution, and safeguard ecosystems for generations.

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Section: Micro and Nanomanufacturing Techniquesmentioning

confidence: 99%

Recent Advances in Advanced Micro and Nanomanufacturing for Wastewater Purification

Verma,

Mondal,

Islam

et al. 2024

ACS Appl. Eng. Mater.

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“…To address the limitations of conventional photocatalytic materials, researchers have explored innovative approaches for immobilizing photocatalytic materials [21][22][23], enhancing their stability and reusability. One promising strategy involves the development of photocatalytic nanocomposites, where photocatalytic materials are incorporated into a stable matrix or support material.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Sulfamethoxazole and Enrofloxacin in Water Using Electrospun Composite Photocatalytic Membrane

Lin,

Fang,

Wang

et al. 2024

Water

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Photocatalysis has emerged as a promising technology for the removal of emerging contaminants such as antibiotics from water. Fixing photocatalytic materials on polymers to prepare applicable membranes is a feasible method for applying photocatalysis. This study explored the preparation of composite PAN-TiO2 and PAN-TiO2-rGO (PAN-rGTi) photocatalytic membranes by combining TiO2, TiO2-reduced graphene oxide (rGO) and polyacrylonitrile (PAN) using electrospinning. Characterization through SEM and EDS analysis confirms the composite membrane’s microstructure and elemental composition. The electrospun PAN-TiO2 and PAN-rGTi composite membranes exhibit a stable and efficient photocatalytic performance in degrading sulfamethoxazole (SMX) and enrofloxacin (ENR), two typical antibiotics commonly found in water bodies. Photocatalytic degradation experiments under simulated solar light reveal the superior performance of the composite photocatalytic membranes compared to PAN alone, with a notable increase in the reaction rate constants of PAN-TiO2 (1.8 to 2.2 times for SMX and 3.2 to 4.0 times for ENR) and even higher enhancements for PAN-rGTi (2.8 to 3.0 times for SMX and 5.4 to 6.5 times for ENR) compared to PAN alone. Despite minor decreases (from 97.6% to 90.4%) in activity over five cycles, the photocatalytic composite membranes remain effective, showcasing their stability and recyclability. This study highlights the potential application of PAN-TiO2 and PAN-rGTi composite membranes as sustainable and effective materials for removing emerging contaminants from water. Further exploration should focus on optimizing materials for specific emerging contaminants and improving their application feasibility for wastewater and water treatment and water purification in water bodies.

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“…Compared with the conventional subtractive manufacturing technology used to create complex structures, EAM has advantages such as minimal material wastage [18], higher energy e ciency, and the ability to overcome challenges such as machinability and formability limitations that occur when processing semiconductor-based photocatalytic materials into complex structures [19]. TiO 2 is one of the most extensively employed photocatalysts owing to its high chemical stability, and it is widely used in diverse applications, such as organic compound degradation [14,20]. TiO 2 exists in three crystalline phases: anatase, rutile, and brookite.…”

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

Preprint

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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 TiO2 feedstock was developed by mixing TiO2 with a binder and optimized for extrusion. To maximize the reaction efficiency, we fabricated three-dimensional (3D) structures for photocatalytic CO2 reduction based on the designed model. To further enhance the photocatalytic CO2 reduction efficiency, we introduced a heterostructure by hydrothermally synthesizing MoSe2, a transition metal dichalcogenide (TMD), on the TiO2 surface. MoSe2, 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 efficiency. The effectiveness of various TiO2–MoSe2 3D structural designs for CO2 reduction was evaluated. A custom-made stainless-steel reactor was used for CO2 reduction under UV-vis irradiation, followed by gas chromatography analysis of the produced gases. The optimized structure exhibited remarkable CO2 selectivity, reaching approximately 82%, demonstrating the feasibility of using EAM for fabricating 3D structures for photocatalytic CO2 reduction.

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Immobilization of photocatalytic materials for (waste)water treatment using 3D printing technology – advances and challenges

Cited by 33 publications

References 136 publications

Recent Advances in Advanced Micro and Nanomanufacturing for Wastewater Purification

Recent Advances in Advanced Micro and Nanomanufacturing for Wastewater Purification

Photocatalytic Degradation of Sulfamethoxazole and Enrofloxacin in Water Using Electrospun Composite Photocatalytic Membrane

Extrusion-based Additive Manufacturing of Three-dimensional MoSe2-nanosheet-coated TiO2 Hetero-structures for Photocatalytic CO2 Reduction

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