Design of a ZnO/Poly(vinylidene fluoride) inverse opal film for photon localization-assisted full solar spectrum photocatalysis

Chen, Yukai; Wang, Yu; Fang, Jiaojiao; Dai, Baoying; Kou, Jiahui; Lu, Chunhua; Zhao, Yuanjin

doi:10.1016/s1872-2067(20)63588-4

Cited by 30 publications

(19 citation statements)

References 63 publications

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“…Studies have revealed the possibility to synthesize nanocomposite materials that contain ZnO or TiO 2 as one component and some other component in association. Chen, Wang, et al (2020) developed ZnO/Poly (vinylidene fluoride) film and studied its solar spectrum photocatalytic performance. It was found that the photocatalytic efficiency of the film was 1.63-fold more than that of pure ZnO film under same conditions.…”

Section: Introductionmentioning

confidence: 99%

A review of graphene‐TiO₂ and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

Thakre

Barai

Bhanvase

2021

Water Environment Research

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Technologies for wastewater remediation have been growing ever since the environmental and health concern is realized. Development of nanomaterials has enabled mankind to have different methods to treat the various kinds of inorganic and organic pollutants present in wastewater from many resources.Among the many materials, semiconductor materials have found many environmental applications due to their outstanding photocatalytic activities. TiO 2 and ZnO are more effectively used as photocatalyst or adsorbents in the withdrawal of inorganic as well as organic wastes from the wastewater. On the other hand, graphene is tremendously being investigated for applications in environmental remediation in view of the superior physical, optical, thermal, and electronic properties of graphene nanocomposites. In this work, graphene-TiO 2 and graphene-ZnO nanocomposites have been reviewed for photocatalytic wastewater treatment. The various preparation techniques of these nanocomposites have been discussed. Also, different design strategies for graphene-based photocatalyst have been revealed. These nanocomposites exhibit promising applications in most of the water purification processes which are reviewed in this work. Along with this, the development of these nanocomposites using biomass-derived graphene has also been introduced. Practitioner Points• Graphene-TiO 2 and graphene-ZnO nanocomposites are effective for wastewater treatment through photocatalysis.• These nanocomposite photocatalysts have been used in the form of membrane as well as antibacterial agents.• Synthetic strategies and design considerations of graphene-based photocatalyst play a major role.• Biomass-derived graphene-TiO 2 and graphene-ZnO nanocomposites have also found application in wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

A review of graphene‐TiO₂ and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

Thakre

Barai

Bhanvase

2021

Water Environment Research

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“…To date, various semiconductors have been developed for photocatalytic H2O2 production, including TiO2 13,16,21 , ZnO [22][23][24] , g-C3N4 [25][26][27] , CdS 28,29 , graphene 30,31 and BiVO4 32 . Among them, ZnO, featured with non-toxicity, stability and earth-abundance, has attracted much interest 33 , but it still suffers from poor absorption of sunlight and fast recombination of photoinduced charge carriers 34 .…”

mentioning

confidence: 99%

“…Polydopamine (PDA) is a widely-explored photosensitizer which can promote solar light utilization of semiconductor materials [39][40][41][42] . Because of enriched functional groups on PDA, e.g., primary amine, tertiary amino and catechol, it can be firmly anchored on the surface of ZnO and stabilize throughout the reaction 34,42 .…”

mentioning

confidence: 99%

Enhanced Photocatalytic H<sub>2</sub>O<sub>2</sub> Production over Inverse Opal ZnO@ Polydopamine S-scheme Heterojunctions

Han¹,

Xu²,

Cheng³

et al. 2022

Acta Physico Chimica Sinica

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Photocatalytic H2O2 production is a sustainable and inexpensive process that requires water and gaseous O2 as raw materials and sunlight as the energy source. However, the slow kinetics of current photocatalysts limits its practical application. ZnO is commonly used as a photocatalytic material in the solar-to-chemical conversion, owing to its high electron mobility, nontoxicity, and relatively low cost. The adsorption capacity of H2O2 on the ZnO surface is low, which leads to the continuous production of H2O2. However, its photoresponse is limited to the ultraviolet (UV) region due to its wide bandgap (3.2 eV). Polydopamine (PDA) has emerged as an effective surface functionalization material in the field of photocatalysis due to its abundant functional groups. PDA can be strongly anchored onto the surface of a semiconducting photocatalyst through covalent and noncovalent bonds. The superior properties of PDA served as a motivation for this study. Herein, we prepare an inverse opal-structured porous PDA-modified ZnO (ZnO@PDA) photocatalyst by in situ self-polymerization of dopamine hydrochloride. The crystal structure, morphology, valency, stability, and energy band structure of photocatalysts are characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflectance spectroscopy (UV-Vis DRS), electrochemical impedance spectroscopy (EIS), Mott-Schottky curve (MS), and electron paramagnetic resonance (EPR). The experimental results showed that electrons in PDA are transferred to ZnO upon contact, which results in an electric field at their interface in the direction from PDA to ZnO. The photoexcited electrons in the ZnO conduction bands flow into PDA, driven by the electric field and bent bands, and are recombined with the holes of the highest occupied molecular orbital of PDA, thereby exhibiting an S-scheme charge transfer. This unique S-scheme mechanism ensures effective electron/hole separation and preserves the strong redox ability of used photocarriers. In addition, the inverse opal structure of ZnO@PDA promotes light-harvesting due to the supposed "slow photon" effect, as well as Bragg diffraction and scattering. Moreover, the enhanced surface area provides a high adsorption capacity and increased active sites for photocatalytic reactions. Therefore, the resulting ZnO@PDA (0.03% (atomic fraction) PDA) exhibits the optimal H2O2 production performance (1011.4 μmol•L −1 •h −1 ), which is 4.4 and 8.9 times higher than pristine ZnO and PDA, respectively. The enhanced performance is ascribed to the improved light absorption, efficient charge separation, and strong redox capability of photocarriers in the S-scheme heterojunction. Therefore, this study provides a novel strategy for the design of inorganic/organic S-scheme heterojunctions for efficient photocatalytic H2O2 production.

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“…176,177 ZnO is considered an effective photocatalyst for purification of water. [178][179][180][181][182][183][184][185][186] Wide bandgap energy (3.2 eV) of ZnO restricts its photocatalytic performance to UV irradiation only. [187][188][189][190][191] To enhance photocatalytic performance and its ability to absorb sunlight, different photocatalyst composites (ZnO/BiOX) have been synthesized.…”

Section: Bismuth Oxyhalides Based Binary Compositesmentioning

confidence: 99%

A review on bismuth oxyhalide based materials for photocatalysis

et al. 2021

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Design of a ZnO/Poly(vinylidene fluoride) inverse opal film for photon localization-assisted full solar spectrum photocatalysis

Cited by 30 publications

References 63 publications

A review of graphene‐TiO₂ and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

A review of graphene‐TiO₂ and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

Enhanced Photocatalytic H<sub>2</sub>O<sub>2</sub> Production over Inverse Opal ZnO@ Polydopamine S-scheme Heterojunctions

A review on bismuth oxyhalide based materials for photocatalysis

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Design of a ZnO/Poly(vinylidene fluoride) inverse opal film for photon localization-assisted full solar spectrum photocatalysis

Cited by 30 publications

References 63 publications

A review of graphene‐TiO2 and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

A review of graphene‐TiO2 and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

Enhanced Photocatalytic H<sub>2</sub>O<sub>2</sub> Production over Inverse Opal ZnO@ Polydopamine S-scheme Heterojunctions

A review on bismuth oxyhalide based materials for photocatalysis

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A review of graphene‐TiO₂ and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment

A review of graphene‐TiO₂ and graphene‐ZnO nanocomposite photocatalysts for wastewater treatment