Studies on the active radicals in synthesized inverse opal photonic crystal and its effect on photocatalytic removal of organic pollutants

Wu, Yuanting; Li, Xu; Liu, Changqing; Chang, Xiaojing; Hu, Xuefeng

doi:10.1016/j.molliq.2020.114414

Cited by 19 publications

(5 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As known, 3DOM possesses unique structural and optical properties, including a well-organized and uniform macroporous framework, a significant specific surface area, and a slow photon effect, contributing to enhancing the light absorption efficiency. For example, a hierarchical microporous structure with an open interconnection greatly improves the transport and diffusion efficiency of reactive species [13,14]. Then, a periodic ordered structure makes it produce a photonic bandgap and can slow the photon propagation in photonic crystals (i.e., a slow light effect), which can be absorbed effectively by photonic crystals, thus producing more photo-induced carriers [15].…”

Section: Introductionmentioning

confidence: 99%

Construction of Inverse–Opal ZnIn2S4 with Well–Defined 3D Porous Structure for Enhancing Photocatalytic H2 Production

Xie,

Wu,

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

The conversion of solar energy into hydrogen using photocatalysts is a pivotal solution to the ongoing energy and environmental challenges. In this study, inverse opal (IO) ZnIn2S4 (ZIS) with varying pore sizes is synthesized for the first time via a template method. The experimental results indicate that the constructed inverse opal ZnIn2S4 has a unique photonic bandgap, and its slow photon effect can enhance the interaction between light and matter, thereby improving the efficiency of light utilization. ZnIn2S4 with voids of 200 nm (ZIS–200) achieved the highest hydrogen production rate of 14.32 μ mol h−1. The normalized rate with a specific surface area is five times higher than that of the broken structures (B–ZIS), as the red edge of ZIS–200 is coupled with the intrinsic absorption edge of the ZIS. This study not only developed an approach for constructing inverse opal multi–metallic sulfides, but also provides a new strategy for enriching efficient ZnIn2S4–based photocatalysts for hydrogen evolution from water.

show abstract

Section: Introductionmentioning

confidence: 99%

Construction of Inverse–Opal ZnIn2S4 with Well–Defined 3D Porous Structure for Enhancing Photocatalytic H2 Production

Xie,

Wu,

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…External stimuli can change the structural parameters of PCs, especially the lattice distance and the effective refractive index, which will cause both tuning of the PBG and the shift of its structural color, and realize visual sensing and display of external stimuli. Based on their tunable optical properties and stimuli-responsive function, PCs are playing an increasingly essential role in environmental protection [14][15][16][17], biomimetic materials and sensors [18][19][20][21][22][23][24][25][26][27][28]. For example, we designed a non-closed-packed photonic crystal sensor for the visual monitoring of violent pressure fluctuations in aqueous fluids, and with a response time of 0.0001 s and a resolution of 0.21 mm 5 .…”

Section: Introductionmentioning

confidence: 99%

Designing and Tailoring Optical Properties: Theory and Simulation of Photonic Band Gaps in Photonic Materials

Zheng,

Meng,

Murtaza

et al. 2024

Photonics

View full text Add to dashboard Cite

Theoretical calculations and numerical simulations play a crucial role in analyzing material properties and devising effective research strategies. In this study, the photonic band gap (PBG) of polymethyl methacrylate (PMMA) and polystyrene (PS) photonic crystals was successfully predicted using theoretical calculations and numerical simulations. The agreement between the predicted results and the actual reflection peaks reached an impressive level of 99%. Utilizing SEM images, the prediction of reflection peaks in acrylamide (AM) - based photonic hydrogels was conducted using theoretical formulas and Rsoft 2019–Bandsolve software. The relationship between the actual reflection peaks and compressive strains in AM-based photonic hydrogels featuring 251 nm PMMA PCs exhibited a remarkable similarity of over 96% with the theoretical and simulated results. In conclusion, an exploration was conducted into the relationship between reflection peaks and compressive strains for AM-based 270 nm PMMA photonic hydrogels, allowing the prediction of the actual reflection peaks under compression. The consistency observed between theoretical/simulated reflection peaks and actual reflection peaks validates the efficacy of this approach in evaluating the optical properties of photonic materials and predicting their responsive effects. This method offers a straightforward and expeditious solution for the design and fabrication of photonic materials.

show abstract

“…Otherwise, compared to opal PhCs, inverse opal (IO) structure not only increases the specific surface area but also facilitates the separation of photogenerated carriers due to the existence of large pores that are periodically interconnected. Therefore, TiO 2 IO PhCs are widely used in the field of photocatalysis, such as dye degradation, − CO 2 reduction, and water splitting for hydrogen production. , …”

Section: Introductionmentioning

confidence: 99%

Slow Light Effect Enhances the Photocatalytic Effect of Inverse Opal TiO₂-Based Photonic Nanocrystals

Zhang,

Cai,

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The slow light effect at the band gap edge of photonic nanocrystals (PhCs) can improve the light utilization efficiency of photocatalysts by enhancing light collection. This study reported an anatase inverse opal TiO 2 (IO TiO 2 ) with a 3D closely packed facecentered cubic structure prepared using a PhC template. The simulation of the electric field modulus distribution in the inverse opal structure was performed, and the enhancement of photocatalytic efficiency caused by the slow light effect at the red and blue edges of the photonic band gap was analyzed. The experimental results of rhodamine B degradation agreed with the simulation. IO TiO 2 has a high specific surface area (91 m 2 /g), which is 4.33 times that of powder TiO 2 , and also has high pore volumes (0.13 cm 3 /g). In addition, it facilitates the separation of photogenerated carriers due to the existence of large pores that are periodically interconnected, thus, significantly improving photocatalytic efficiency. The apparent rate constant of IO TiO 2 is 9.96 × 10 −3 min −1 , which is 1.81 times that of powder TiO 2 . The blue edge of 200 nm IO TiO 2 is spectrally closer to the electronic band gap of TiO 2 . Also, it presents optimal photodegradation efficiency (70.02%), and its rate constant is 2.13 times higher than porous block TiO 2 without a band gap. Moreover, a detailed path of a possible reaction mechanism is proposed based on the results of the free radical trapping experiment and EPR analysis. This research offered opportunities for a deeper understanding and more efficient utilization of the blue-edge slow light effect. The slow light can be leveraged to enhance the optical nonlinear effect, which has practical significance for solar energy collection and conversion, optical switches, and photocatalysis.

show abstract

Studies on the active radicals in synthesized inverse opal photonic crystal and its effect on photocatalytic removal of organic pollutants

Cited by 19 publications

References 44 publications

Construction of Inverse–Opal ZnIn2S4 with Well–Defined 3D Porous Structure for Enhancing Photocatalytic H2 Production

Construction of Inverse–Opal ZnIn2S4 with Well–Defined 3D Porous Structure for Enhancing Photocatalytic H2 Production

Designing and Tailoring Optical Properties: Theory and Simulation of Photonic Band Gaps in Photonic Materials

Slow Light Effect Enhances the Photocatalytic Effect of Inverse Opal TiO₂-Based Photonic Nanocrystals

Contact Info

Product

Resources

About

Studies on the active radicals in synthesized inverse opal photonic crystal and its effect on photocatalytic removal of organic pollutants

Cited by 19 publications

References 44 publications

Construction of Inverse–Opal ZnIn2S4 with Well–Defined 3D Porous Structure for Enhancing Photocatalytic H2 Production

Construction of Inverse–Opal ZnIn2S4 with Well–Defined 3D Porous Structure for Enhancing Photocatalytic H2 Production

Designing and Tailoring Optical Properties: Theory and Simulation of Photonic Band Gaps in Photonic Materials

Slow Light Effect Enhances the Photocatalytic Effect of Inverse Opal TiO2-Based Photonic Nanocrystals

Contact Info

Product

Resources

About

Slow Light Effect Enhances the Photocatalytic Effect of Inverse Opal TiO₂-Based Photonic Nanocrystals