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Lim KRG, Aizenberg M, Aizenberg J. Colloidal Templating in Catalyst Design for Thermocatalysis. J Am Chem Soc 2024; 146:22103-22121. [PMID: 39101642 PMCID: PMC11328140 DOI: 10.1021/jacs.4c07167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Conventional catalyst preparative methods commonly entail the impregnation, precipitation, and/or immobilization of nanoparticles on their supports. While convenient, such methods do not readily afford the ability to control collective ensemble-like nanoparticle properties, such as nanoparticle proximity, placement, and compartmentalization. In this Perspective, we illustrate how incorporating colloidal templating into catalyst design for thermocatalysis confers synthetic advantages to facilitate new catalytic investigations and augment catalytic performance, focusing on three colloid-templated catalyst structures: 3D macroporous structures, hierarchical macro-mesoporous structures, and discrete hollow nanoreactors. We outline how colloidal templating decouples the nanoparticle and support formation steps to devise modular catalyst platforms that can be flexibly tuned at different length scales. Of particular interest is the raspberry colloid templating (RCT) method which confers high thermomechanical stability by partially embedding nanoparticles within its support, while retaining high levels of reactant accessibility. We illustrate how the high modularity of the RCT approach allows one to independently control collective nanoparticle properties, such as nanoparticle proximity and localization, without concomitant changes to other catalytic descriptors that would otherwise confound analyses of their catalytic performance. We next discuss how colloidal templating can be employed to achieve spatially disparate active site functionalization while directing reactant transport within the catalyst structure to enhance selectivity in multistep catalytic cascades. Throughout this Perspective, we highlight developments in advanced characterization that interrogate transport phenomena and/or derive new insights into these catalyst structures. Finally, we offer our outlook on the future roles, applications, and challenges of colloidal templating in catalyst design for thermocatalysis.
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Affiliation(s)
- Kang Rui Garrick Lim
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Michael Aizenberg
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Joanna Aizenberg
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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2
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Lourdu Madanu T, Chaabane L, Mouchet SR, Deparis O, Su BL. Manipulating multi-spectral slow photons in bilayer inverse opal TiO 2@BiVO 4 composites for highly enhanced visible light photocatalysis. J Colloid Interface Sci 2023; 647:233-245. [PMID: 37253292 DOI: 10.1016/j.jcis.2023.05.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/11/2023] [Accepted: 05/17/2023] [Indexed: 06/01/2023]
Abstract
Manipulation of light has been proved to be a promising strategy to increase light harvesting in solar-to-chemical energy conversion, especially in photocatalysis. Inverse opal (IO) photonic structures are highly promising for light manipulation as their periodic dielectric structures enable them to slow down light and localize it within the structure, thereby improving light harvesting and photocatalytic efficiency. However, slow photons are confined to narrow wavelength ranges and hence limit the amount of energy that can be captured through light manipulation. To address this challenge, we synthesized bilayer IO TiO2@BiVO4 structures that manifested two distinct stop band gap (SBG) peaks, arising from different pore sizes in each layer, with slow photons available at either edge of each SBG. In addition, we achieved precise control over the frequencies of these multi-spectral slow photons through pore size and incidence angle variations, that enabled us to tune their wavelengths to the electronic absorption of the photocatalyst for optimal light utilization in aqueous phase visible light photocatalysis. This first proof of concept involving multi-spectral slow photon utilization enabled us to achieve up to 8.5 times and 2.2 times higher photocatalytic efficiencies than the corresponding non-structured and monolayer IO photocatalysts respectively. Through this work, we have successfully and significantly improved light harvesting efficiency in slow photon-assisted photocatalysis, the principles of which can be extended to other light harvesting applications.
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Affiliation(s)
- Thomas Lourdu Madanu
- Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
| | - Laroussi Chaabane
- Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
| | - Sébastien R Mouchet
- Solid-State Physics Laboratory (LPS) & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium; School of Physics, University of Exeter, Physics Building, Stocker Road, Exeter EX4 4QL, UK
| | - Olivier Deparis
- Solid-State Physics Laboratory (LPS) & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
| | - Bao-Lian Su
- Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium; State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China.
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Madanu TL, Mouchet SR, Deparis O, Liu J, Li Y, Su BL. Tuning and transferring slow photons from TiO 2 photonic crystals to BiVO 4 nanoparticles for unprecedented visible light photocatalysis. J Colloid Interface Sci 2023; 634:290-299. [PMID: 36535165 DOI: 10.1016/j.jcis.2022.12.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/28/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Periodic structures with alternating refractive indices such as inverse opal photonic crystals are capable of reducing the group velocity of light such that this slowed light can be more efficiently harvested for highly enhanced solar energy conversion. However, the generation, the manipulation and, in particular, the practical applications of these slow photons remain highly challenging. Here, we report the first proof of concept on the ability to control, in an inverse opal TiO2-BiVO4 hetero-composite, the transfer of slow photons generated from the inverse opal photonic structure to the photocatalytically active BiVO4 nanoparticles for highly enhanced visible light photoconversion. Tuning the slow photon frequencies, in order to accommodate the electronic band gap of BiVO4 for slow photon transfer and for significantly improved light harvesting, was successfully achieved by varying the structural periodicity (pore size) of inverse opal and the light incidence angle. The photocatalytic activity of BiVO4 in all inverse opal structures, promoted by slow photon effect, reached up to 7 times higher than those in the non-structured compact films. This work opens new avenues for the practical utilization of slow photon effect under visible light in photocatalytic energy-related applications like water splitting and carbon dioxide reduction and in photovoltaics.
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Affiliation(s)
- Thomas L Madanu
- Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61-B-5000 Namur, Belgium
| | - Sébastien R Mouchet
- Solid-State Physics Laboratory & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61-B-5000 Namur, Belgium; School of Physics, University of Exeter, Physics Building, Stocker Road, Exeter EX4 4QL, UK
| | - Olivier Deparis
- Solid-State Physics Laboratory & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61-B-5000 Namur, Belgium
| | - Jing Liu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China
| | - Yu Li
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China
| | - Bao-Lian Su
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China.
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Díaz-Marín CD, Li D, Vázquez-Cosme FJ, Pajovic S, Cha H, Song Y, Kilpatrick C, Vaartstra G, Wilson CT, Boriskina S, Wang EN. Capillary Transfer of Self-Assembled Colloidal Crystals. NANO LETTERS 2023; 23:1888-1896. [PMID: 36802577 DOI: 10.1021/acs.nanolett.2c04896] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Colloidal self-assembly has attracted significant interest in numerous applications including optics, electrochemistry, thermofluidics, and biomolecule templating. To meet the requirements of these applications, numerous fabrication methods have been developed. However, these are limited to narrow ranges of feature sizes, are incompatible with many substrates, and/or have low scalability, significantly limiting the use of colloidal self-assembly. In this work, we study the capillary transfer of colloidal crystals and demonstrate that this approach overcomes these limitations. Enabled by capillary transfer, we fabricate 2D colloidal crystals with nano-to-micro feature sizes spanning 2 orders of magnitude and on typically challenging substrates including those that are hydrophobic, rough, curved, or structured with microchannels. We developed and systemically validated a capillary peeling model, elucidating the underlying transfer physics. Due to its high versatility, good quality, and simplicity, this approach can expand the possibilities of colloidal self-assembly and enhance the performance of applications using colloidal crystals.
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Affiliation(s)
- Carlos D Díaz-Marín
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Diane Li
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Fernando J Vázquez-Cosme
- Departamento de Ingeniería Mecánica, Universidad de Puerto Rico─Mayagüez, Mayagüez, 00681, Puerto Rico
| | - Simo Pajovic
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hyeongyun Cha
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Youngsup Song
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Cameron Kilpatrick
- Department of Mechanical Engineering, Stanford University, Stanford, California, 94305, United States
| | - Geoffrey Vaartstra
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Chad T Wilson
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Svetlana Boriskina
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Evelyn N Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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5
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He W, Fan S, Liu G, Zhou L, Chai L, Zhu H, Li C, Yu B. Preparation and properties of poly (vinylidene fluoride) membrane with inverse opal-like structure. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Pt-Modified Interfacial Engineering for Enhanced Photocatalytic Performance of 3D Ordered Macroporous TiO2. CRYSTALS 2022. [DOI: 10.3390/cryst12060778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Narrowing the band gap and increasing the photodegradation efficiency of TiO2-based photocatalysts are very important for their wide application in environment-related fields such as photocatalytic degradation of toxic pollutants in wastewater. Herein, a three-dimensionally ordered macroporous Pt-loaded TiO2 photocatalyst (3DOM Pt/TiO2) has been successfully synthesized using a facile colloidal crystal-template method. The resultant composite combines several morphological/structural advantages, including uniform 3D ordered macroporous skeletons, high crystallinity, large porosity and an internal electric field formed at Pt/TiO2 interfaces. These unique features enable the 3DOM Pt/TiO2 to possess a large surface for photocatalytic reactions and fast diffusion for mass transfer of reactants as well as efficient suppression of recombination for photogenerated electron-hole pairs in TiO2. Thus, the 3DOM Pt/TiO2 exhibits significantly enhanced photocatalytic activity. Typically, 88% of RhB can be degraded over the 3DOM Pt/TiO2 photocatalyst under visible light irradiation (λ ≥ 420 nm) within 100 min, much higher than that of the commercial TiO2 nanoparticles (only 37%). The underlying mechanism for the enhanced photocatalytic activity of 3DOM Pt/TiO2 has been further analyzed based on energy band theory and ascribed to the formation of Schottky-type Pt/TiO2 junctions. The proposed method herein can provide new references for further improving the photocatalytic efficiency of other photocatalysts via rational structural/morphological engineering.
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Wang Z, Zhu H, Tu W, Zhu X, Yao Y, Zhou Y, Zou Z. Host/Guest Nanostructured Photoanodes Integrated with Targeted Enhancement Strategies for Photoelectrochemical Water Splitting. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103744. [PMID: 34738739 PMCID: PMC8805576 DOI: 10.1002/advs.202103744] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/05/2021] [Indexed: 06/13/2023]
Abstract
Photoelectrochemical (PEC) hydrogen production from water splitting is a green technology that can solve the environmental and energy problems through converting solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes has proven to be an effective strategy to improve solar-to-fuel conversion efficiency dramatically. In host/guest photoanodes, the absorber layer is deposited onto a high-surface-area electron collector, resulting in a significant enhancements in light-harvesting as well as charge collection and separation efficiency. The present review aims to summarize and highlight recent state-of-the-art progresses in the architecture designing of host/guest photoanodes with integrated enhancement strategies, including i) light trapping effect; ii) optimization of conductive host scaffolds; iii) hierarchical structure engineering. The challenges and prospects for the future development of host/guest nanostructured photoanodes are also presented.
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Affiliation(s)
- Zhiwei Wang
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
- Hefei National Laboratory for Physical Sciences at the MicroscaleSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026P. R. China
| | - Heng Zhu
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
| | - Wenguang Tu
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
| | - Xi Zhu
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
| | - Yingfang Yao
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
- College of Engineering and Applied SciencesNanjing UniversityNanjingJiangsu210093P. R. China
| | - Yong Zhou
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
- Jiangsu Key Laboratory for Nano TechnologyNational Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresSchool of PhysicsNanjing UniversityNanjingJiangsu210093P. R. China
| | - Zhigang Zou
- School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172P. R. China
- Jiangsu Key Laboratory for Nano TechnologyNational Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresSchool of PhysicsNanjing UniversityNanjingJiangsu210093P. R. China
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8
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Díaz-Marín CD, Shetty RM, Cheung S, Vaartstra G, Gopinath A, Wang EN. Rational Fabrication of Nano-to-Microsphere Polycrystalline Opals Using Slope Self-Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12568-12576. [PMID: 34672609 DOI: 10.1021/acs.langmuir.1c01857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Self-assembly of artificial opals has garnered significant interest as a facile nanofabrication technique capable of producing highly ordered structures for optical, electrochemical, biomolecular, and thermal applications. In these applications, the optimum opal particle diameter can vary by several orders of magnitude because the properties of the resultant structures depend strongly on the feature size. However, current opal fabrication techniques only produce high-quality structures over a limited range of sphere sizes or require complex processes and equipment. In this work, the rational and simple fabrication of polycrystalline opals with diameters between 500 nm and 10 μm was demonstrated using slope self-assembly of colloids suspended in ethanol-water. The role of the various process parameters was elucidated through a scaling-based model that accurately captures the variations of opal substrate coverage for spheres of size 2 μm or smaller. For spheres of 10 μm and larger, capillary forces were shown to play a key role in the process dynamics. Based on these insights, millimeter-scale monolayered opals were successfully fabricated, while centimeter-scale opals were possible with sparse sphere stacking or small uncovered areas. These insights provide a guide for the simple and fast fabrication of opals that can be used as optical coatings, templates for high power density electrodes, molecule templates, and high-performance thermo-fluidic devices.
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Affiliation(s)
- Carlos D Díaz-Marín
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Rishabh M Shetty
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Samantha Cheung
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Geoffrey Vaartstra
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ashwin Gopinath
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Evelyn N Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Lim SY, Hedrich C, Jiang L, Law CS, Chirumamilla M, Abell AD, Blick RH, Zierold R, Santos A. Harnessing Slow Light in Optoelectronically Engineered Nanoporous Photonic Crystals for Visible Light-Enhanced Photocatalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03320] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Siew Yee Lim
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Carina Hedrich
- Center for Hybrid Nanostructures, Universität Hamburg, Hamburg, Hamburg 22761, Germany
| | - Lin Jiang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Cheryl Suwen Law
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Manohar Chirumamilla
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Hamburg, Hamburg 21073, Germany
| | - Andrew D. Abell
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Department of Chemistry, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Robert H. Blick
- Center for Hybrid Nanostructures, Universität Hamburg, Hamburg, Hamburg 22761, Germany
| | - Robert Zierold
- Center for Hybrid Nanostructures, Universität Hamburg, Hamburg, Hamburg 22761, Germany
| | - Abel Santos
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
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10
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Zhang X, John S. Photonic crystal light trapping for photocatalysis. OPTICS EXPRESS 2021; 29:22376-22402. [PMID: 34266003 DOI: 10.1364/oe.427218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
The Achilles heel of wide-band photocatalysts such as TiO2 is the insufficient photogeneration in the visible range under sunlight. This has been a longstanding impediment to large-scale, real-world deployment of titania-based photocatalysis applications. Instead of traditional band engineering through heavy-doping, we suggest enhancing photocatalytic efficiency of lightly-doped TiO2 using photonic crystal (PC) structures. This strongly increases solar photogeneration through novel wave-interference-based light trapping. Four photocatalyst structures - simple cubic woodpile (wdp), square lattice nanorod (nrPC), slanted conical-pore (scPore), and face-centered cubic inverse opal (invop) - are optimized and compared for light harvesting in the sub- and above-gap (282 to 550 nm) regions of weakly absorbing TiO2, with the imaginary part of the dielectric constant 0.01 in the visible range. The optimized lattice constants for the first three, and opal center-to-center distance for invop, are ∼300 - 350 nm. For fixed PC thickness, the ranking of visible light harvesting capability is: scPore > wdp ∼ nrPC > invop. The scPore PC deposited on highly reflective substrate is ideal for photocatalysis given its combination of enhanced light trapping and superior charge transport.
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11
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Poolwong J, Kiatboonyarit T, Achiwawanich S, Butburee T, Khemthong P, Kityakarn S. Three-Dimensional Hierarchical Porous TiO 2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1715. [PMID: 34209736 PMCID: PMC8307786 DOI: 10.3390/nano11071715] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022]
Abstract
Three-dimensional hierarchical mesoporous structures of titanium dioxide (3D-HPT) were synthesized by self-assembly emulsion polymerization. Polymethyl methacrylate (PMMA) and pluronic 123 (P123) were used as the soft templates and co-templates for assisting the formation of hierarchical 3D porous structures. The TiO2 crystal structure, morphology, and Remazol red dye degradation were investigated. The 3D-HPT and normal three-dimensional titanium dioxide (3D-T) presented the good connection of the nanoparticle-linked honeycomb within the form of anatase. The 3D-HPT structure showed greatly enhanced adsorption of Remazol dye, and facilitated the efficient photocatalytic breakdown of the dye. Surprisingly, 3D-HPT can adsorb approximately 40% of 24 ppm Remazol dye in the dark, which is superior to 3D-T and the commercial anatase at the same condition (approx. 5%). Moreover, 3D-HPT can completely decolorize Remazol dye within just 20 min, which is more than three folds faster than the commercial anatase, making it one of the most active photocatalysts that have been reported for degradation of Remazol dye. The superior photocatalytic performance is attributed to the higher specific surface area, amplified light-harvesting efficiency, and enhanced adsorption capacity into the hierarchical 3D inverse opal structure compared to the commercial anatase TiO2.
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Affiliation(s)
- Jitpisut Poolwong
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| | - Tanya Kiatboonyarit
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| | - Supakit Achiwawanich
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| | - Teera Butburee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Klong Laung, Pathumthani 12120, Thailand;
| | - Pongtanawat Khemthong
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Klong Laung, Pathumthani 12120, Thailand;
| | - Sutasinee Kityakarn
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
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12
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Kousik SR, Sipp D, Abitaev K, Li Y, Sottmann T, Koynov K, Atanasova P. From Macro to Mesoporous ZnO Inverse Opals: Synthesis, Characterization and Tracer Diffusion Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:196. [PMID: 33466679 PMCID: PMC7828802 DOI: 10.3390/nano11010196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 11/16/2022]
Abstract
Oxide inverse opals (IOs) with their high surface area and open porosity are promising candidates for catalyst support applications. Supports with confined mesoporous domains are of added value to heterogeneous catalysis. However, the fabrication of IOs with mesoporous or sub-macroporous voids (<100 nm) continues to be a challenge, and the diffusion of tracers in quasi-mesoporous IOs is yet to be adequately studied. In order to address these two problems, we synthesized ZnO IOs films with tunable pore sizes using chemical bath deposition and template-based approach. By decreasing the size of polystyrene (PS) template particles towards the mesoporous range, ZnO IOs with 50 nm-sized pores and open porosity were synthesized. The effect of the template-removal method on the pore geometry (spherical vs. gyroidal) was studied. The infiltration depth in the template was determined, and the factors influencing infiltration were assessed. The crystallinity and photonic stop-band of the IOs were studied using X-Ray diffraction and UV-Vis, respectively. The infiltration of tracer molecules (Alexa Fluor 488) in multilayered quasi-mesoporous ZnO IOs was confirmed via confocal laser scanning microscopy, while fluorescence correlation spectroscopy analysis revealed two distinct diffusion times in IOs assigned to diffusion through the pores (fast) and adsorption on the pore walls (slow).
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Affiliation(s)
- Shravan R. Kousik
- Institute for Materials Science, University of Stuttgart, 70569 Stuttgart, Germany; (S.R.K.); (D.S.); (Y.L.)
| | - Diane Sipp
- Institute for Materials Science, University of Stuttgart, 70569 Stuttgart, Germany; (S.R.K.); (D.S.); (Y.L.)
| | - Karina Abitaev
- Institute of Physical Chemistry, University of Stuttgart, 70569 Stuttgart, Germany; (K.A.); (T.S.)
| | - Yawen Li
- Institute for Materials Science, University of Stuttgart, 70569 Stuttgart, Germany; (S.R.K.); (D.S.); (Y.L.)
| | - Thomas Sottmann
- Institute of Physical Chemistry, University of Stuttgart, 70569 Stuttgart, Germany; (K.A.); (T.S.)
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Petia Atanasova
- Institute for Materials Science, University of Stuttgart, 70569 Stuttgart, Germany; (S.R.K.); (D.S.); (Y.L.)
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Design of a ZnO/Poly(vinylidene fluoride) inverse opal film for photon localization-assisted full solar spectrum photocatalysis. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63588-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Cang Y, Lee J, Wang Z, Yan J, Matyjaszewski K, Bockstaller MR, Fytas G. Transparent Hybrid Opals with Unexpected Strong Resonance-Enhanced Photothermal Energy Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004732. [PMID: 33251706 DOI: 10.1002/adma.202004732] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 10/12/2020] [Indexed: 05/24/2023]
Abstract
Photothermal energy conversion is of fundamental importance to applications ranging from drug delivery to microfluidics and from ablation to fabrication. It typically originates from absorptive processes in materials that-when coupled with non-radiative dissipative processes-allow the conversion of radiative energy into heat. Microstructure design provides versatile strategies for controlling light-matter interactions. In particular, the deliberate engineering of the band structure in photonic materials is known to be an effective approach to amplify absorption in materials. However, photonic amplification is generally tied to high optical contrast materials which limit the applicability of the concept to metamaterials such as microfabricated metal-air hybrids. This contribution describes the first observation of pronounced amplification of absorption in low contrast opals formed by the self-assembly of polymer-tethered particles. The dependence of the amplification factor on the length scale and degree of order of materials as well as the angle of incidence reveal that it is related to the slow photon effect. A remarkable amplification factor of 16 is shown to facilitate the rapid "melting" of opal films even in the absence of "visible" absorption. The results point to novel opportunities for tailoring light-matter interactions in hybrid materials that can benefit the manipulation and fabrication of functional materials.
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Affiliation(s)
- Yu Cang
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 100 Zhangwu Road, Shanghai, 200092, China
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Jaejun Lee
- Department of Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Zuyuan Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Jiajun Yan
- Chemistry Department, Carnegie Mellon University, 4400 Fifth Ave., Pittsburgh, PA, 15213, USA
| | - Krzysztof Matyjaszewski
- Chemistry Department, Carnegie Mellon University, 4400 Fifth Ave., Pittsburgh, PA, 15213, USA
| | - Michael R Bockstaller
- Department of Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - George Fytas
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
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15
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Apostolaki MA, Toumazatou A, Antoniadou M, Sakellis E, Xenogiannopoulou E, Gardelis S, Boukos N, Falaras P, Dimoulas A, Likodimos V. Graphene Quantum Dot-TiO 2 Photonic Crystal Films for Photocatalytic Applications. NANOMATERIALS 2020; 10:nano10122566. [PMID: 33371303 PMCID: PMC7766274 DOI: 10.3390/nano10122566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 11/25/2022]
Abstract
Photonic crystal structuring has emerged as an advanced method to enhance solar light harvesting by metal oxide photocatalysts along with rational compositional modifications of the materials’ properties. In this work, surface functionalization of TiO2 photonic crystals by blue luminescent graphene quantum dots (GQDs), n–π* band at ca. 350 nm, is demonstrated as a facile, environmental benign method to promote photocatalytic activity by the combination of slow photon-assisted light trapping with GQD-TiO2 interfacial electron transfer. TiO2 inverse opal films fabricated by the co-assembly of polymer colloidal spheres with a hydrolyzed titania precursor were post-modified by impregnation in aqueous GQDs suspension without any structural distortion. Photonic band gap engineering by varying the inverse opal macropore size resulted in selective performance enhancement for both salicylic acid photocatalytic degradation and photocurrent generation under UV–VIS and visible light, when red-edge slow photons overlapped with the composite’s absorption edge, whereas stop band reflection was attenuated by the strong UVA absorbance of the GQD-TiO2 photonic films. Photoelectrochemical and photoluminescence measurements indicated that the observed improvement, which surpassed similarly modified benchmark mesoporous P25 TiO2 films, was further assisted by GQDs electron acceptor action and visible light activation to a lesser extent, leading to highly efficient photocatalytic films.
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Affiliation(s)
- Maria-Athina Apostolaki
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, GR-15784 Athens, Greece; (M.-A.A.); (A.T.); (S.G.)
| | - Alexia Toumazatou
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, GR-15784 Athens, Greece; (M.-A.A.); (A.T.); (S.G.)
| | - Maria Antoniadou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (M.A.); (E.S.); (E.X.); (N.B.); (P.F.); (A.D.)
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (M.A.); (E.S.); (E.X.); (N.B.); (P.F.); (A.D.)
| | - Evangelia Xenogiannopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (M.A.); (E.S.); (E.X.); (N.B.); (P.F.); (A.D.)
| | - Spiros Gardelis
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, GR-15784 Athens, Greece; (M.-A.A.); (A.T.); (S.G.)
| | - Nikos Boukos
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (M.A.); (E.S.); (E.X.); (N.B.); (P.F.); (A.D.)
| | - Polycarpos Falaras
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (M.A.); (E.S.); (E.X.); (N.B.); (P.F.); (A.D.)
| | - Athanasios Dimoulas
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (M.A.); (E.S.); (E.X.); (N.B.); (P.F.); (A.D.)
| | - Vlassis Likodimos
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, GR-15784 Athens, Greece; (M.-A.A.); (A.T.); (S.G.)
- Correspondence: ; Tel.: +30-2107276824
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16
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Heterostructured CoO x-TiO 2 Mesoporous/Photonic Crystal Bilayer Films for Enhanced Visible-Light Harvesting and Photocatalysis. MATERIALS 2020; 13:ma13194305. [PMID: 32993143 PMCID: PMC7579390 DOI: 10.3390/ma13194305] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 12/05/2022]
Abstract
Heterostructured bilayer films, consisting of co-assembled TiO2 photonic crystals as the bottom layer and a highly performing mesoporous P25 titania as the top layer decorated with CoOx nanoclusters, are demonstrated as highly efficient visible-light photocatalysts. Broadband visible-light activation of the bilayer films was implemented by the surface modification of both titania layers with nanoscale clusters of Co oxides relying on the chemisorption of Co acetylacetonate complexes on TiO2, followed by post-calcination. Tuning the slow photon regions of the inverse opal supporting layer to the visible-light absorption of surface CoOx oxides resulted in significant amplification of salicylic-acid photodegradation under visible and ultraviolet (UV)–visible light (Vis), outperforming benchmark P25 films of higher titania loading. This enhancement was related to the spatially separated contributions of slow photon propagation in the inverse opal support layer assisted by Bragg reflection toward the CoOx-modified mesoporous P25 top layer. This effect indicates that photonic crystals may be highly effective as both photocatalytically active and backscattering layers in multilayer photocatalytic films.
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17
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Komarov KA, Yurchenko SO. Colloids in rotating electric and magnetic fields: designing tunable interactions with spatial field hodographs. SOFT MATTER 2020; 16:8155-8168. [PMID: 32797126 DOI: 10.1039/d0sm01046d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Opening a way to designing tunable interactions between colloidal particles in rotating electric and magnetic fields provides rich opportunities both for fundamental studies of phase transitions and engineering of soft materials. Spatial hodographs, showing the distribution of the field magnitude and orientation, allow the adjustment of interactions and can be an extremely potent tool for prospective experiments, but remain unstudied systematically. Here, we calculate the tunable interactions between spherical particles in rhodonea, conical, cylindrical, and ellipsoidal field hodographs, as the most experimentally important cases. We discovered that spatial hodographs are reduced to each other, providing a plethora of interactions, e.g., repulsive, attractive, barrier-like, and double-scale repulsive ones. Complementing the "magic" conical angle, the "magic" compression and ellipticity of cylindrical and ellipsoidal hodographs are introduced. In the "magic" hodographs, the interactions become spatially isotropic and attain dispersion-force-like asymptotic (the same for pairwise and many-body energies), being attractive or repulsive, if the particle permittivity is larger or smaller than that of the solvent. With the diagrammatic method and numerical calculations, we obtained physically meaningful fits to the many-body tunable potentials for silica (iron oxide) particles in deionised water in the rotating electric (magnetic) fields. Our results provide essential guidance for future experiments and simulations of colloidal liquids, crystals, gels, and glasses, important for a broad range of problems in condensed matter, chemical physics, physical chemistry, materials science, and soft matter.
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Affiliation(s)
- Kirill A Komarov
- Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, 105005 Moscow, Russia. and Institute for High Pressure Physics RAS, Kaluzhskoe Shosse, 14, Troitsk, Moscow, 108840, Russia
| | - Stanislav O Yurchenko
- Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, 105005 Moscow, Russia.
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18
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Suh Y, Gowda H, Won Y. In situ investigation of particle clustering dynamics in colloidal assemblies using fluorescence microscopy. J Colloid Interface Sci 2020; 576:195-202. [PMID: 32422448 DOI: 10.1016/j.jcis.2020.04.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/04/2020] [Accepted: 04/11/2020] [Indexed: 12/13/2022]
Abstract
Colloidal self-assembly is a process in which dispersed matter spontaneously form higher-order structures without external intervention. During self-assembly, packed particles are subject to solvent-evaporation induced dynamic structuring phases, which leads to microscale defects called the grain boundaries. While it is imperative to precisely control detailed grain boundaries to fabricate well-defined self-assembled crystals, the understanding of the colloidal physics that govern grain boundaries remains a challenge due to limited resolutions of current visualization approaches. In this work, we experimentally report in situ particle clustering dynamics during evaporative colloidal assembly by studying a novel microscale laser induced fluorescence technique. The fluorescence microscopy measures the saturation levels with high fidelity to identify distinct colloidal structuring regimes during self-assembly as well as cracking mechanics. The techniques discussed in this work not only enables unprecedented levels of colloidal self-assembly analysis but also have potential to be used for various sensing applications with microscopic resolutions.
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Affiliation(s)
- Youngjoon Suh
- Department of Mechanical and Aerospace Engineering, University of California, Irvine 5200 Engineering Hall, CA 92617-2700, USA
| | - Hamsa Gowda
- Department of Biomedical Engineering, University of California, Irvine 3120 Natural Sciences II, CA 92697-2715, USA
| | - Yoonjin Won
- Department of Mechanical and Aerospace Engineering, University of California, Irvine 5200 Engineering Hall, CA 92617-2700, USA.
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19
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Gopinath KP, Madhav NV, Krishnan A, Malolan R, Rangarajan G. Present applications of titanium dioxide for the photocatalytic removal of pollutants from water: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 270:110906. [PMID: 32721341 DOI: 10.1016/j.jenvman.2020.110906] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/26/2020] [Accepted: 06/01/2020] [Indexed: 05/20/2023]
Abstract
The evolution of modern technology and industrial processes has been accompanied by an increase in the utilization of chemicals to derive new products. Water bodies are frequently contaminated by the presence of conventional pollutants such as dyes and heavy metals, as well as microorganisms that are responsible for various diseases. A sharp rise has also been observed in the presence of new compounds heretofore excluded from the design and evaluation of wastewater treatment processes, categorized as "emerging pollutants". While some are harmless, certain emerging pollutants possess the ability to cause debilitating effects on a wide spectrum of living organisms. Photocatalytic degradation has emerged as an increasingly popular solution to the problem of water pollution due to its effectiveness and versatility. The primary objective of this study is to thoroughly scrutinize recent applications of titanium dioxide and its modified forms as photocatalytic materials in the removal and control of several classes of water pollutants as reported in literature. Different structural modifications are used to enhance the performance of the photocatalyst such as doping and formation of composites. The principles of these modifications have been scrutinized and evaluated in this review in order to present their advantages and drawbacks. The mechanisms involved in the removal of different pollutants through photocatalysis performed by TiO2 have been highlighted. The factors affecting the mechanism of photocatalysis and those affecting the performance of different TiO2-based photocatalysts have also been thoroughly discussed, thereby presenting a comprehensive view of all aspects involved in the application of TiO2 to remediate and control water pollution.
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Affiliation(s)
| | - Nagarajan Vikas Madhav
- Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Abhishek Krishnan
- Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Rajagopal Malolan
- Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Goutham Rangarajan
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, 200 College Street, Ontario, M5S 3E5, Canada
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20
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Hou J, Lan X, Shi J, Xin L, Wang L. The synergistic effect of fullerene and 3D ordered macroporous structure on promoting photocatalytic performance. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Wang Z, Nguyen TD, Yeo LP, Tan CK, Gan L, Tok AIY. Periodic FTO IOs/CdS NRs/CdSe Clusters with Superior Light Scattering Ability for Improved Photoelectrochemical Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1905826. [PMID: 31916682 DOI: 10.1002/smll.201905826] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/16/2019] [Indexed: 06/10/2023]
Abstract
Periodic fluorine-doped tin oxide inverse opals (FTO IOs) grafted with CdS nanorods (NRs) and CdSe clusters are reported for improved photoelectrochemical (PEC) performance. This hierarchical photoanode is fabricated by a combination of dip-coating, hydrothermal reaction, and chemical bath deposition. The growth of 1D CdS NRs on the periodic walls of 3D FTO IOs forms a unique 3D/1D hierarchical structure, providing a sizeable specific surface area for the loading of CdSe clusters. Significantly, the periodic FTO IOs enable uniform light scattering while the abundant surrounded CdS NRs induce additional random light scattering, combining to give multiple light scattering within the complete hierarchical structure, significantly improving light-harvesting of CdS NRs and CdSe clusters. The high electron collection ability of FTO IOs and the CdS/CdSe heterojunction formation also contribute to the enhanced charge transport and separation. Due to the incorporation of these enhancement strategies in one hierarchical structure, FTO IOs/CdS NRs/CdSe clusters present an improved PEC performance. The photocurrent density of FTO IOs/CdS NRs/CdSe clusters at 1.23 V versus reversible hydrogen electrode reaches 9.2 mA cm-2 , which is 1.43 times greater than that of CdS NRs/CdSe clusters and 3.83 times of CdS NRs.
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Affiliation(s)
- Zhiwei Wang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Tam Duy Nguyen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Loo Pin Yeo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Chiew Kei Tan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Lin Gan
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Alfred Iing Yoong Tok
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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22
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Li JF, Wang J, Wang XT, Wang XG, Li Y, Wang CW. Bandgap engineering of TiO2nanotube photonic crystals for enhancement of photocatalytic capability. CrystEngComm 2020. [DOI: 10.1039/c9ce01828j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TiO2nanotube photonic crystals with a tunable photonic band gap were constructed by the anodization technique and used as efficient photocatalytic devices.
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Affiliation(s)
- Jian-Feng Li
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province
- College of Physics and Electronic Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jian Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province
- College of Physics and Electronic Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiao-Tian Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province
- College of Physics and Electronic Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiao-Gang Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province
- College of Physics and Electronic Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yan Li
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province
- College of Physics and Electronic Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Cheng-Wei Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province
- College of Physics and Electronic Engineering
- Northwest Normal University
- Lanzhou
- China
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23
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Coridan RH. A neural network-based approach to predicting absorption in nanostructured, disordered photoelectrodes. Chem Commun (Camb) 2020; 56:10473-10476. [DOI: 10.1039/d0cc04229c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A neural network-based emulator can accurately and efficiently predict the spatial distribution of absorption throughout a nanoscale semiconductor in a disordered photoelectrode.
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Affiliation(s)
- Robert H. Coridan
- Department of Chemistry and Biochemistry
- University of Arkansas
- Fayetteville
- USA
- Materials Science and Engineering Program
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24
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Komarov KA, Yarkov AV, Yurchenko SO. Diagrammatic method for tunable interactions in colloidal suspensions in rotating electric or magnetic fields. J Chem Phys 2019; 151:244103. [DOI: 10.1063/1.5131255] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Kirill A. Komarov
- Bauman Moscow State Technical University, 2nd Baumanskaya Str. 5, 105005 Moscow, Russia
- Institute for High Pressure Physics RAS, Kaluzhskoe Shosse 14, Troitsk, 108840 Moscow, Russia
| | - Andrey V. Yarkov
- Bauman Moscow State Technical University, 2nd Baumanskaya Str. 5, 105005 Moscow, Russia
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25
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Querebillo CJ, Öner IH, Hildebrandt P, Ly KH, Weidinger IM. Accelerated Photo-Induced Degradation of Benzidine-p-Aminothiophenolate Immobilized at Light-Enhancing TiO 2 Nanotube Electrodes. Chemistry 2019; 25:16048-16053. [PMID: 31533198 PMCID: PMC6972621 DOI: 10.1002/chem.201902963] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Indexed: 01/24/2023]
Abstract
Herein, the enhanced visible-light-induced degradation of the azo-dye benzidine-p-aminothiophenolate immobilized on TiO2 nanotube electrodes is reported. Exploiting the reported photonic properties of the TiO2 support and the strong electronic absorption of the dye allowed for employing surface-enhanced resonance Raman spectroscopy at 413 nm to simultaneously trigger the photoreaction and follow the time-dependent decay process. Degradation rate constants of up to 25 s-1 were observed, which stand among the highest reported values for laser-induced degradation of immobilized dyes on photonically active supports. Contrast experiments with two differently light-enhancing TiO2 nanotube electrodes establish the direct correlation of the material's optical response, that is, electromagnetic field enhancement, on the interfacial photocatalytic reaction.
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Affiliation(s)
- Christine Joy Querebillo
- Professur für ElektrochemieTechnische Universität Dresden01062DresdenGermany
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 13510623BerlinGermany
- School of Analytical Sciences AdlershofUnter den Linden 610099BerlinGermany
| | - Ibrahim Halil Öner
- Professur für ElektrochemieTechnische Universität Dresden01062DresdenGermany
| | - Peter Hildebrandt
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 13510623BerlinGermany
| | - Khoa Hoang Ly
- Professur für ElektrochemieTechnische Universität Dresden01062DresdenGermany
| | - Inez M. Weidinger
- Professur für ElektrochemieTechnische Universität Dresden01062DresdenGermany
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26
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Heshmat M, Li PCH. Construction of an Array of Photonic Crystal Films for Visual Differentiation of Water/Ethanol Mixtures. ACS OMEGA 2019; 4:19991-19999. [PMID: 31788633 PMCID: PMC6882101 DOI: 10.1021/acsomega.9b02947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 10/30/2019] [Indexed: 05/11/2023]
Abstract
A photonic crystal film (PCF) which consists of a porous layered structure with a highly ordered periodic arrangement of nanopores has been used to differentiate between various mixtures of water and ethanol (EtOH). The refractive index difference between the wall (silica) of the empty nanopore and air which occupies it results in the structural color of the PCF. This color disappears when the nanopores are infiltrated by a liquid with a similar refractive index to silica (or silicon dioxide). The disappearance of the structural color provides a means to construct a colorimetric sensor to differentiate between various water/EtOH mixtures based on their wettability of the nanopores in the PCF. In this study, an array of silica-based PCFs was synthesized on a silicon substrate with a precise control of nanopore properties using the co-assembly/sedimentation method. Using this method, we benefitted from having different PCFs on a single substrate. Chemical coatings, neck angles, and film thicknesses on each PCF were the three factors used to adjust the wettability of the pores. Nanopore wetting by water/EtOH mixtures was studied in a systematic manner based on the three factors, and the findings were used to develop a sensor for visual differentiation of various water/EtOH mixtures. The final developed sensor consisting of an array of six PCFs was able to differentiate between seven different water/EtOH mixtures: W10, W20, W30, W40, W50, W60, and W70, in which W10 means 10% of water in EtOH.
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27
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Electrochemical Engineering of Nanoporous Materials for Photocatalysis: Fundamentals, Advances, and Perspectives. Catalysts 2019. [DOI: 10.3390/catal9120988] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Photocatalysis comprises a variety of light-driven processes in which solar energy is converted into green chemical energy to drive reactions such as water splitting for hydrogen energy generation, degradation of environmental pollutants, CO2 reduction and NH3 production. Electrochemically engineered nanoporous materials are attractive photocatalyst platforms for a plethora of applications due to their large effective surface area, highly controllable and tuneable light-harvesting capabilities, efficient charge carrier separation and enhanced diffusion of reactive species. Such tailor-made nanoporous substrates with rational chemical and structural designs provide new exciting opportunities to develop advanced optical semiconductor structures capable of performing precise and versatile control over light–matter interactions to harness electromagnetic waves with unprecedented high efficiency and selectivity for photocatalysis. This review introduces fundamental developments and recent advances of electrochemically engineered nanoporous materials and their application as platforms for photocatalysis, with a final prospective outlook about this dynamic field.
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28
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Diamantopoulou A, Sakellis E, Gardelis S, Tsoutsou D, Glenis S, Boukos N, Dimoulas A, Likodimos V. Advanced Photocatalysts Based on Reduced Nanographene Oxide-TiO 2 Photonic Crystal Films. MATERIALS 2019; 12:ma12162518. [PMID: 31394874 PMCID: PMC6720929 DOI: 10.3390/ma12162518] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/31/2019] [Accepted: 08/05/2019] [Indexed: 02/05/2023]
Abstract
Surface functionalization of TiO2 inverse opals by graphene oxide nanocolloids (nanoGO) presents a promising modification for the development of advanced photocatalysts that combine slow photon-assisted light harvesting, surface area, and mass transport of macroporous photonic structures with the enhanced adsorption capability, surface reactivity, and charge separation of GO nanosheets. In this work, post-thermal reduction of nanoGO–TiO2 inverse opals was investigated in order to explore the role of interfacial electron transfer vs. pollutant adsorption and improve their photocatalytic activity. Photonic band gap-engineered TiO2 inverse opals were fabricated by the coassembly technique and were functionalized by GO nanosheets and reduced under He at 200 and 500 °C. Comparative performance evaluation of the nanoGO–TiO2 films on methylene blue photodegradation under UV-VIS and visible light showed that thermal reduction at 200 °C, in synergy with slow photon effects, improved the photocatalytic reaction rate despite the loss of nanoGO and oxygen functional groups, pointing to enhanced charge separation. This was further supported by photoluminescence spectroscopy and salicylic acid UV-VIS photodegradation, where, in the absence of photonic effects, the photocatalytic activity increased, confirming that fine-tuning of interfacial coupling between TiO2 and reduced nanoGO is a key factor for the development of highly efficient photocatalytic films.
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Affiliation(s)
- Angeliki Diamantopoulou
- Section of Solid State Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Ilissia, Greece
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", 15310 Agia Paraskevi, Greece
| | - Spiros Gardelis
- Section of Solid State Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Ilissia, Greece
| | - Dimitra Tsoutsou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", 15310 Agia Paraskevi, Greece
| | - Spyridon Glenis
- Section of Solid State Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Ilissia, Greece
| | - Nikolaos Boukos
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", 15310 Agia Paraskevi, Greece
| | - Athanasios Dimoulas
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", 15310 Agia Paraskevi, Greece
| | - Vlassis Likodimos
- Section of Solid State Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Ilissia, Greece.
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Zhang P, Lou XWD. Design of Heterostructured Hollow Photocatalysts for Solar-to-Chemical Energy Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1900281. [PMID: 31141231 DOI: 10.1002/adma.201900281] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/12/2019] [Indexed: 06/09/2023]
Abstract
Direct conversion of solar energy into chemical energy in a sustainable manner is one of the most promising solutions to the energy crisis and environmental issues. Fabrication of highly active photocatalysts is of great significance for the practical applications of efficient solar-to-chemical energy conversion systems. Among various photocatalytic materials, semiconductor-based heterostructured photocatalysts with hollow features show distinct advantages. Recent research efforts on rational design of heterostructured hollow photocatalysts toward photocatalytic water splitting and CO2 reduction are presented. First, both single-shelled and multishelled heterostructured photocatalysts are surveyed. Then, heterostructured hollow photocatalysts with tube-like and frame-like morphologies are discussed. It is intended that further innovative works on the material design of high-performance photocatalysts for solar energy utilization can be inspired.
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Affiliation(s)
- Peng Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
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30
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Kryuchkov NP, Smallenburg F, Ivlev AV, Yurchenko SO, Löwen H. Phase diagram of two-dimensional colloids with Yukawa repulsion and dipolar attraction. J Chem Phys 2019; 150:104903. [DOI: 10.1063/1.5082785] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Nikita P. Kryuchkov
- Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, 105005 Moscow, Russia
| | - Frank Smallenburg
- Institut für Theoretische Physik II: Soft Matter, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
- Laboratoire de Physique des Solides, CNRS, University of Paris-Sud, University of Paris-Saclay, 91405 Orsay, France
| | - Alexei V. Ivlev
- Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse 1, 85748 Garching, Germany
| | - Stanislav O. Yurchenko
- Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, 105005 Moscow, Russia
| | - Hartmut Löwen
- Institut für Theoretische Physik II: Soft Matter, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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31
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Suh Y, Pham Q, Shao B, Won Y. The Control of Colloidal Grain Boundaries through Evaporative Vertical Self-Assembly. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804523. [PMID: 30730084 DOI: 10.1002/smll.201804523] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/29/2018] [Indexed: 06/09/2023]
Abstract
Self-assembly continuously gains attention as an excellent method to create novel nanoscale structures with a wide range of applications in photonics, optoelectronics, biomedical engineering, and heat transfer applications. However, self-assembly is governed by a diversity of complex interparticle forces that cause fabricating defectless large scale (>1 cm) colloidal crystals, or opals, to be a daunting challenge. Despite numerous efforts to find an optimal method that offers the perfect colloidal crystal by minimizing defects, it has been difficult to provide physical interpretations that govern the development of defects such as grain boundaries. This study reports the control over grain domains and intentional defect characteristics that develop during evaporative vertical deposition. The degree of particle crystallinity and evaporation conditions is shown to govern the grain domain characteristics, such as shapes and sizes. In particular, the grains fabricated with 300 and 600 nm sphere diameters can be tuned into single-column structures exceeding ≈1 mm by elevating heating temperature up to 93 °C. The understanding of self-assembly physics presented in this work will enable the fabrication of novel self-assembled structures with high periodicity and offer fundamental groundworks for developing large-scale crack-free structures.
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Affiliation(s)
- Youngjoon Suh
- Department of Mechanical and Aerospace Engineering, University of California, 5200 Engineering Hall Irvine, Irvine, CA, 92697-2700, USA
| | - Quang Pham
- Department of Mechanical and Aerospace Engineering, University of California, 5200 Engineering Hall Irvine, Irvine, CA, 92697-2700, USA
| | - Bowen Shao
- Department of Mechanical and Aerospace Engineering, University of California, 5200 Engineering Hall Irvine, Irvine, CA, 92697-2700, USA
| | - Yoonjin Won
- Department of Mechanical and Aerospace Engineering, University of California, 5200 Engineering Hall Irvine, Irvine, CA, 92697-2700, USA
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32
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ZnO inverse opals with deposited Ag nanoparticles: Fabrication, characterization and photocatalytic activity under visible light irradiation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.10.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Wu X, Lan D, Zhang R, Pang F, Ge J. Fabrication of Opaline ZnO Photonic Crystal Film and Its Slow-Photon Effect on Photoreduction of Carbon Dioxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:194-202. [PMID: 30520643 DOI: 10.1021/acs.langmuir.8b03327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Monodisperse ZnO particles with adjustable size have been produced on a large scale by two-step seeding-growth polyol reactions. Through spin coating of supersaturated ZnO/diethylene glycol solution and evaporation of solvent, opaline ZnO photonic crystal (PC) film with good crystallinity and uniform photonic structures can be prepared from these ZnO particles. Compared with a disorderly stacked ZnO film, the ZnO PC film shows a higher activity in photocatalytic reduction of CO2 due to the generated slow photons at the edge of the photonic band gap and their promotion to the light absorption. When the electronic band gap of ZnO matches the red edge of the photonic band gap of ZnO PC, the enhancement factor of photocatalytic activity represented by CO evolution can be maximized to 2.64-fold in the current experiment. Compared to the traditional inverse opal photocatalysts, the opaline ZnO photocatalysts are prepared by simplified and scalable procedures, and they still possess the same enhancement in activity compared to ZnO without the photonic structure, which might be broadly used in solar energy utilization, environment protection, and many other green chemical processes in the future.
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Affiliation(s)
- Xiaojie Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Dengpeng Lan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Ruifang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Fei Pang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Jianping Ge
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
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Lim SY, Law CS, Liu L, Markovic M, Abell AD, Santos A. Integrating surface plasmon resonance and slow photon effects in nanoporous anodic alumina photonic crystals for photocatalysis. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00627c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study explores the potential of gold-coated titania-functionalized nanoporous anodic alumina distributed Bragg reflectors (Au-TiO2-NAA-DBRs) as platforms to enhance photocatalytic reactions by integrating “slow photons” and surface plasmon resonance (SPR).
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Affiliation(s)
- Siew Yee Lim
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide
- Australia
- Institute for Photonics and Advanced Sensing (IPAS)
| | - Cheryl Suwen Law
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide
- Australia
- Institute for Photonics and Advanced Sensing (IPAS)
| | - Lina Liu
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide
- Australia
- School of Chemistry and Chemical Engineering
| | - Marijana Markovic
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide
- Australia
- Center of Chemistry
| | - Andrew D. Abell
- Institute for Photonics and Advanced Sensing (IPAS)
- The University of Adelaide
- 5005 Adelaide
- Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP)
| | - Abel Santos
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide
- Australia
- Institute for Photonics and Advanced Sensing (IPAS)
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Zhang R, Zeng F, Pang F, Ge J. Substantial Enhancement toward the Photocatalytic Activity of CdS Quantum Dots by Photonic Crystal-Supporting Films. ACS APPLIED MATERIALS & INTERFACES 2018; 10:42241-42248. [PMID: 30450893 DOI: 10.1021/acsami.8b14437] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The introduction of photonic crystals (PC) to semiconductors, which usually appear in the form of inverse opal materials, has been proved to be an effective way to enhance the photocatalytic activity, but their enhancement factor is merely two- to fourfold in most previous reports. In this work, a supported thin-film photocatalyst (CdS/SiO2-ETPTA), as a new PC-based catalyst system, is prepared for hydrogen evolution under visible light, which presents an 6.4- to 8.8-fold activity compared to the same CdS quantum dots deposited on a non-PC film. This substantial enhancement originates from the high reflectivity of PCs and absorption of reflected light by CdS, whose absorption edge exactly matches the stopband of PCs. Compared to the traditional inverse opal photocatalysts, the PC-supported photocatalyst possesses many advantages including simplified procedures in synthesis, a substantial enhancement of activity, flexible modification with mature thin-film techniques, good stability, and easy regeneration in reaction.
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Affiliation(s)
- Ruifang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Fang Zeng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Fei Pang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
| | - Jianping Ge
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China
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36
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Coridan RH, Norman MA, Mehrabi H. Enhanced light absorption in simulations of ultra-thin ZnO layers structured by a SiO2 photonic glass. CAN J CHEM 2018. [DOI: 10.1139/cjc-2018-0218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hierarchically organized nanostructures are often employed to improve the energy conversion efficiency of photovoltaic and photoelectrochemical cells. Ultra-thin semiconductors can improve the internal carrier collection yield in materials with poor carrier lifetimes by reducing the characteristic length scales of collection. However, reducing the dimension of the light absorber requires strategies to increase absorption and the overall photogeneration when the material is to be used in broadband solar energy conversion applications. Here, we explore a strategy for improving light absorption in nanometer-scale, ultra-thin film ZnO layers by integrating them into a SiO2 colloidal crystal-based photonic glass. We use three-dimensional finite-difference electromagnetic simulations to study the local and total absorption improvements on composite films of close-packed, randomized colloidal structures coated with a thin layer of ZnO. These simulations show that the near band-gap absorption in the ZnO coating is dependent on the degree of vacancies in the colloidal crystal that templates the photonic glass. With these results, we show that disordered, defective colloidal composites can potentially be used to fabricate nanostructured photoelectrodes based on ultra-thin semiconductor layers with improved light absorption characteristics.
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Affiliation(s)
- Robert H. Coridan
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
| | - Mya A. Norman
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
| | - Hamed Mehrabi
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
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37
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Law CS, Lim SY, Abell AD, Voelcker NH, Santos A. Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E788. [PMID: 30287772 PMCID: PMC6215225 DOI: 10.3390/nano8100788] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/01/2018] [Accepted: 10/01/2018] [Indexed: 12/15/2022]
Abstract
Optical sensors are a class of devices that enable the identification and/or quantification of analyte molecules across multiple fields and disciplines such as environmental protection, medical diagnosis, security, food technology, biotechnology, and animal welfare. Nanoporous photonic crystal (PC) structures provide excellent platforms to develop such systems for a plethora of applications since these engineered materials enable precise and versatile control of light⁻matter interactions at the nanoscale. Nanoporous PCs provide both high sensitivity to monitor in real-time molecular binding events and a nanoporous matrix for selective immobilization of molecules of interest over increased surface areas. Nanoporous anodic alumina (NAA), a nanomaterial long envisaged as a PC, is an outstanding platform material to develop optical sensing systems in combination with multiple photonic technologies. Nanoporous anodic alumina photonic crystals (NAA-PCs) provide a versatile nanoporous structure that can be engineered in a multidimensional fashion to create unique PC sensing platforms such as Fabry⁻Pérot interferometers, distributed Bragg reflectors, gradient-index filters, optical microcavities, and others. The effective medium of NAA-PCs undergoes changes upon interactions with analyte molecules. These changes modify the NAA-PCs' spectral fingerprints, which can be readily quantified to develop different sensing systems. This review introduces the fundamental development of NAA-PCs, compiling the most significant advances in the use of these optical materials for chemo- and biosensing applications, with a final prospective outlook about this exciting and dynamic field.
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Affiliation(s)
- Cheryl Suwen Law
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
| | - Siew Yee Lim
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
| | - Andrew D Abell
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
- Department of Chemistry, The University of Adelaide, Adelaide SA 5005, Australia.
| | - Nicolas H Voelcker
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Melbourne 3168, Australia.
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne 3052, Australia.
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Melbourne 3168, Australia.
- INM-Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
| | - Abel Santos
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
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Lim SY, Law CS, Markovic M, Kirby JK, Abell AD, Santos A. Engineering the Slow Photon Effect in Photoactive Nanoporous Anodic Alumina Gradient-Index Filters for Photocatalysis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24124-24136. [PMID: 29939009 DOI: 10.1021/acsami.8b05946] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we explore for the first time the capabilities of nanoporous anodic alumina gradient-index filters (NAA-GIFs) functionalized with titanium dioxide (TiO2) photoactive layers to enhance photon-to-electron conversion rates and improve the efficiency of photocatalytic reactions by "slow photon" effect. A set of NAA-GIFs was fabricated by sinusoidal pulse anodization, in which a systematic modification of various anodization parameters (i.e., pore widening time, anodization period, and anodization time) enables the fine-tuning of the photonic stopband (PSB) of these nanoporous photonic crystals (PCs) across the spectral regions. The surface of NAA-GIFs was chemically modified with photoactive layers of TiO2 to create a composite photoactive material with precisely engineered optical properties. The photocatalytic performance of TiO2-functionalized NAA-GIFs was assessed by studying the photodegradation of three model organic dyes (i.e., methyl orange, Rhodamine B, and methylene blue) with well-defined absorption bands across different spectral regions under simulated irradiation conditions. Our study demonstrates that when the edges of characteristic PSB of TiO2-modified NAA-GIFs are completely or partially aligned with the absorption band of the organic dyes, the photodegradation rate is enhanced due to "slow photon" effect. A rational design of the photocatalyst material with respect to the organic dye is demonstrated to be optimal to speed up photocatalytic reactions by an efficient management of photons from high-irradiance spectral regions. This provides new opportunities to develop high-performing photocatalytic materials for efficient photocatalysis with broad applicability.
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Affiliation(s)
- Siew Yee Lim
- School of Chemical Engineering , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- Institute for Photonics and Advanced Sensing (IPAS) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Cheryl Suwen Law
- School of Chemical Engineering , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- Institute for Photonics and Advanced Sensing (IPAS) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Marijana Markovic
- School of Agriculture Food and Wine , The University of Adelaide , Adelaide , South Australia 5064 , Australia
- CSIRO Land and Water , Adelaide , South Australia 5064 , Australia
| | - Jason K Kirby
- CSIRO Land and Water , Adelaide , South Australia 5064 , Australia
| | - Andrew D Abell
- Institute for Photonics and Advanced Sensing (IPAS) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- Department of Chemistry , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Abel Santos
- School of Chemical Engineering , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- Institute for Photonics and Advanced Sensing (IPAS) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) , The University of Adelaide , Adelaide , South Australia 5005 , Australia
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Bouju X, Duguet É, Gauffre F, Henry CR, Kahn ML, Mélinon P, Ravaine S. Nonisotropic Self-Assembly of Nanoparticles: From Compact Packing to Functional Aggregates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706558. [PMID: 29740924 DOI: 10.1002/adma.201706558] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/07/2017] [Indexed: 06/08/2023]
Abstract
Quantum strongly correlated systems that exhibit interesting features in condensed matter physics often need an unachievable temperature or pressure range in classical materials. One solution is to introduce a scaling factor, namely, the lattice parameter. Synthetic heterostructures named superlattices or supracrystals are synthesized by the assembling of colloidal atoms. These include semiconductors, metals, and insulators for the exploitation of their unique properties. Most of them are currently limited to dense packing. However, some of desired properties need to adjust the colloidal atoms neighboring number. Here, the current state of research in nondense packing is summarized, discussing the benefits, outlining possible scenarios and methodologies, describing examples reported in the literature, briefly discussing the challenges, and offering preliminary conclusions. Penetrating such new and intriguing research fields demands a multidisciplinary approach accounting for the coupling of statistic physics, solid state and quantum physics, chemistry, computational science, and mathematics. Standard interactions between colloidal atoms and emerging fields, such as the use of Casimir forces, are reported. In particular, the focus is on the novelty of patchy colloidal atoms to meet this challenge.
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Affiliation(s)
- Xavier Bouju
- Centre d'élaboration de matériaux et d'études structurales (CEMES), CNRS, Université de Toulouse, UPR CNRS 8011, 29 Rue J. Marvig, F-31055, Toulouse, France
- Observatoire des micro et nanotechnologies (OMNT), Minatec, 17 rue des Martyrs, F-38000, Grenoble, France
| | - Étienne Duguet
- Observatoire des micro et nanotechnologies (OMNT), Minatec, 17 rue des Martyrs, F-38000, Grenoble, France
- CNRS, Univ. Bordeaux, ICMCB, UMR 5026, F-33600, Pessac, France
| | - Fabienne Gauffre
- Observatoire des micro et nanotechnologies (OMNT), Minatec, 17 rue des Martyrs, F-38000, Grenoble, France
- Institut des sciences chimiques de Rennes (ISCR), CNRS, Université de Rennes, UMR CNRS 6226, 263 avenue du Général Leclerc, F-35000, Rennes, France
| | - Claude R Henry
- Observatoire des micro et nanotechnologies (OMNT), Minatec, 17 rue des Martyrs, F-38000, Grenoble, France
- Centre interdisciplinaire de nanoscience de Marseille (CINAM), CNRS, Aix-Marseille Université, UMR CNRS 7325, Campus de Luminy, F-13288, Marseille, France
| | - Myrtil L Kahn
- Observatoire des micro et nanotechnologies (OMNT), Minatec, 17 rue des Martyrs, F-38000, Grenoble, France
- Laboratoire de chimie de coordination (LCC), CNRS, Université de Toulouse, UPR CNRS 8241, F-31000, Toulouse, France
| | - Patrice Mélinon
- Observatoire des micro et nanotechnologies (OMNT), Minatec, 17 rue des Martyrs, F-38000, Grenoble, France
- Institut Lumière Matière (ILM), CNRS, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306, F-69622, Villeurbanne, France
| | - Serge Ravaine
- CNRS, Univ. Bordeaux, CRPP, UMR 5031, F-33600, Pessac, France
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Wang Z, Li X, Ling H, Tan CK, Yeo LP, Grimsdale AC, Tok AIY. 3D FTO/FTO-Nanocrystal/TiO 2 Composite Inverse Opal Photoanode for Efficient Photoelectrochemical Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800395. [PMID: 29665266 DOI: 10.1002/smll.201800395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/27/2018] [Indexed: 06/08/2023]
Abstract
A 3D fluorine-doped SnO2 (FTO)/FTO-nanocrystal (NC)/TiO2 inverse opal (IO) structure is designed and fabricated as a new "host and guest" type of composite photoanode for efficient photoelectrochemical (PEC) water splitting. In this novel photoanode design, the highly conductive and porous FTO/FTO-NC IO acts as the "host" skeleton, which provides direct pathways for faster electron transport, while the conformally coated TiO2 layer acts as the "guest" absorber layer. The unique composite IO structure is fabricated through self-assembly of colloidal spheres template, a hydrothermal method and atomic layer deposition (ALD). Owing to its large surface area and efficient charge collection, the FTO/FTO-NC/TiO2 composite IO photoanode shows excellent photocatalytic properties for PEC water splitting. With optimized dimensions of the SnO2 nanocrystals and the thickness of the ALD TiO2 absorber layers, the 3D FTO/FTO-NC/TiO2 composite IO photoanode yields a photocurrent density of 1.0 mA cm-2 at 1.23 V versus reversible hydrogen electrode (RHE) under AM 1.5 illumination, which is four times higher than that of the FTO/TiO2 IO reference photoanode.
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Affiliation(s)
- Zhiwei Wang
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Xianglin Li
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Han Ling
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Chiew Kei Tan
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Loo Pin Yeo
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Andrew Clive Grimsdale
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Alfred Iing Yoong Tok
- School of Material Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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41
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Phillips KR, Shirman T, Shirman E, Shneidman AV, Kay TM, Aizenberg J. Nanocrystalline Precursors for the Co-Assembly of Crack-Free Metal Oxide Inverse Opals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706329. [PMID: 29349818 DOI: 10.1002/adma.201706329] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/29/2017] [Indexed: 05/03/2023]
Abstract
Inorganic microstructured materials are ubiquitous in nature. However, their formation in artificial self-assembly systems is challenging as it involves a complex interplay of competing forces during and after assembly. For example, colloidal assembly requires fine-tuning of factors such as the size and surface charge of the particles and electrolyte strength of the solvent to enable successful self-assembly and minimize crack formation. Co-assembly of templating colloidal particles together with a sol-gel matrix precursor material helps to release stresses that accumulate during drying and solidification, as previously shown for the formation of high-quality inverse opal (IO) films out of amorphous silica. Expanding this methodology to crystalline materials would result in microscale architectures with enhanced photonic, electronic, and catalytic properties. This work describes tailoring the crystallinity of metal oxide precursors that enable the formation of highly ordered, large-area (mm2 ) crack-free titania, zirconia, and alumina IO films. The same bioinspired approach can be applied to other crystalline materials as well as structures beyond IOs.
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Affiliation(s)
- Katherine R Phillips
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Tanya Shirman
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02138, USA
| | - Elijah Shirman
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02138, USA
| | - Anna V Shneidman
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Theresa M Kay
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Joanna Aizenberg
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02138, USA
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Chen K, Schünemann S, Tüysüz H. Preparation of Waterproof Organometal Halide Perovskite Photonic Crystal Beads. Angew Chem Int Ed Engl 2017; 56:6548-6552. [DOI: 10.1002/anie.201702556] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Kun Chen
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Stefan Schünemann
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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Chen K, Schünemann S, Tüysüz H. Preparation of Waterproof Organometal Halide Perovskite Photonic Crystal Beads. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kun Chen
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Stefan Schünemann
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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Manabe K, Tanaka C, Moriyama Y, Tenjimbayashi M, Nakamura C, Tokura Y, Matsubayashi T, Kyung KH, Shiratori S. Chitin Nanofibers Extracted from Crab Shells in Broadband Visible Antireflection Coatings with Controlling Layer-by-Layer Deposition and the Application for Durable Antifog Surfaces. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31951-31958. [PMID: 27801561 DOI: 10.1021/acsami.6b11786] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Reflection from various surfaces of many optical systems, such as photovoltaics and displays, is a critical issue for their performance, and antireflection coatings play a pivotal role in a wide variety of optical technologies, reducing light reflectance loss and hence maximizing light transmission. With the current movement toward optically transparent polymeric media and coatings for antireflection technology, the need for economical and environmentally friendly materials and methods without dependence on shape or size has clearly been apparent. Herein, we demonstrate novel antireflection coatings composed of chitin nanofibers (CHINFs), extracted from crab shell as a biomass material through an aqueous-based layer-by-layer self-assembly process to control the porosity. Increasing the number of air spaces inside the membrane led low refractive index, and precise control of refractive index derived from the stacking of the CHINFs achieved the highest transmittance with investigating the surface structure and the refractive index depending on the solution pH. At a wavelength of 550 nm, the transmittance of the coatings was 96.4%, which was 4.8% higher than that of a glass substrate, and their refractive index was 1.30. Further critical properties of the films were the durability and the antifogging performance derived from the mechanical stability and hydrophilicity of CHINFs, respectively. The present study may contribute to a development of systematically designed nanofibrous films which are suitable for optical applications operating at a broadband visible wavelength with durability and antifog surfaces.
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Affiliation(s)
| | | | | | | | | | | | | | - Kyu-Hong Kyung
- SNT Co., Ltd. , 7-1 Shinkawasaki, Saiwai-ku, Kawasaki, Kanagawa 212-0032, Japan
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Slow photon amplification of gas-phase ethanol photo-oxidation in titania inverse opal photonic crystals. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schünemann S, Chen K, Brittman S, Garnett E, Tüysüz H. Preparation of Organometal Halide Perovskite Photonic Crystal Films for Potential Optoelectronic Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25489-25495. [PMID: 27589559 DOI: 10.1021/acsami.6b09227] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Herein, a facile method for the preparation of organometal halide perovskite (OHP) thin films in photonic crystal morphology is presented. The OHP photonic crystal thin films with controllable porosity and thicknesses between 2 μm and 6 μm were prepared on glass, fluorine-doped tin oxide (FTO), and TiO2 substrates by using a colloidal crystal of polystyrene microspheres as a template to form an inverse opal structure. The composition of OHP could be straightforwardly tuned by varying the halide anions. The obtained OHP inverse opal films possess large ordered domains with a periodic change of the refractive index, which results in pronounced photonic stop bands in the visible light range. By changing the diameter of the polystyrene microspheres, the position of the photonic stop band can be tuned through the visible spectrum. This developed methodology can be used as blueprint for the synthesis of various OHP films that could eventually be used as more effective light harvesting materials for diverse applications.
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Affiliation(s)
- Stefan Schünemann
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Kun Chen
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Sarah Brittman
- Center for Nanophotonics, FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Erik Garnett
- Center for Nanophotonics, FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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Collins G, Armstrong E, McNulty D, O’Hanlon S, Geaney H, O’Dwyer C. 2D and 3D photonic crystal materials for photocatalysis and electrochemical energy storage and conversion. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2016; 17:563-582. [PMID: 27877904 PMCID: PMC5111560 DOI: 10.1080/14686996.2016.1226121] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 08/14/2016] [Accepted: 08/16/2016] [Indexed: 05/20/2023]
Abstract
This perspective reviews recent advances in inverse opal structures, how they have been developed, studied and applied as catalysts, catalyst support materials, as electrode materials for batteries, water splitting applications, solar-to-fuel conversion and electrochromics, and finally as photonic photocatalysts and photoelectrocatalysts. Throughout, we detail some of the salient optical characteristics that underpin recent results and form the basis for light-matter interactions that span electrochemical energy conversion systems as well as photocatalytic systems. Strategies for using 2D as well as 3D structures, ordered macroporous materials such as inverse opals are summarized and recent work on plasmonic-photonic coupling in metal nanoparticle-infiltrated wide band gap inverse opals for enhanced photoelectrochemistry are provided.
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Affiliation(s)
- Gillian Collins
- Department of Chemistry, University College Cork, Cork, Ireland
| | - Eileen Armstrong
- Department of Life Science, Institute of Technology, Sligo, Ireland
| | - David McNulty
- Department of Chemistry, University College Cork, Cork, Ireland
| | - Sally O’Hanlon
- Department of Chemistry, University College Cork, Cork, Ireland
| | - Hugh Geaney
- Department of Chemistry, University College Cork, Cork, Ireland
| | - Colm O’Dwyer
- Department of Chemistry, University College Cork, Cork, Ireland
- Micro-Nano Systems Centre, Tyndall National Institute, Cork, Ireland
- Corresponding author:
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Grassian VH. Particle Chemistry in the Environment: Challenges and Opportunities. J Phys Chem Lett 2015; 6:3880-3881. [PMID: 26722886 DOI: 10.1021/acs.jpclett.5b02008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Vicki H Grassian
- Department of Chemistry, University of Iowa , Iowa City, Iowa 52242, United States
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