Article
Chemistry, Physical
Thomas L. Madanu, Sebastien R. Mouchet, Olivier Deparis, Jing Liu, Yu Li, Bao-Lian Su
Summary: This study demonstrates the ability to transfer slow photons generated from an inverse opal photonic structure to photocatalytically active BiVO4 nanoparticles in order to enhance visible light photoconversion. By tuning the slow photon frequencies through varying the structural periodicity of the inverse opal and the light incidence angle, the photocatalytic activity of BiVO4 was significantly improved. The results suggest new possibilities for utilizing the slow photon effect in photocatalytic energy-related applications and photovoltaics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Siwei Zhao, Shaohua Jin, Huanmin Liu, Shengfu Li, Kun Chen
Summary: The study combines antisolvent crystallization protocol and colloidal crystal templating approach to fabricate highly crystalline cesium lead bromide perovskite, showing superior photocatalytic performance.
Article
Chemistry, Physical
Thanh-Hiep Thi Le, Thanh-Trang Bui, Hao Van Bui, Van-Duong Dao, Loan Le Thi Ngoc
Summary: This study successfully synthesized and characterized IP-TiO2 and Ag@IP-TiO2, and investigated their photocatalytic performance through visible-light degradation of antibiotics. The results demonstrate that surface modification by Ag nanoparticles enhances the visible-light absorption and reduces the recombination rate of photogenerated electrons and holes in IP-TiO2, leading to the enhanced photocatalytic performance of Ag@IP-TiO2.
Review
Chemistry, Analytical
Farzaneh Fathi, Mohammad-Reza Rashidi, Parvin Samadi Pakchin, Sohrab Ahmadi-Kandjani, Arash Nikniazi
Summary: IO materials with advanced three-dimensional microporous structures have attracted attention in optical sensor and biological applications. Their unique optical and structural properties can simplify improvements in non-destructive optical study capabilities for point of care testing.
Article
Chemistry, Physical
Yuqi Zhang, Wenshuo Wang, Lei Wang, Qianyi Guo, Hong Hu, Chuan Xie, Jian Shang, Junling Xu, Yaokang Zhang, Zijian Zheng
Summary: Increasing electrode thickness in energy-storage devices can enhance areal capacitance but reduce volumetric capacitance. The inverse opaline metallic membrane (IOMM) serves as a stable and high-rate electrode, overcoming the tradeoff between volumetric capacitance and electrode thickness by showing a linear increase in volumetric capacitance.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Bowen Wang, Anabel E. Lanterna, Juan C. Scaiano
Summary: The study reveals significant differences in the desorption kinetics of probe molecules depending on the chemical nature of the catalysts. Palladium catalysts exhibit faster conversion rates from alkenes to alkanes compared to molybdenum/cobalt catalysts, indicating differences in selectivity between the two.
Article
Materials Science, Ceramics
Petronela Pascariu, Corneliu Cojocaru, Mihaela Homocianu, Petrisor Samoila, Cosmin Romanitan, Djourelov Nikolay
Summary: A series of tin (Sn)-doped titania (TiO2) composites were prepared by electrospinning and calcination. The effect of dopant amounts and calcination temperatures on the composition, morphology, and photocatalytic activity of the composites was evaluated. The ([1.5%]Sn:TiO2) composite sintered at 500°C showed remarkable photocatalytic activity with a removal efficiency of about 100% and a rate constant of 9.685 x 10-2 min-1. Structural investigations were conducted to explain the photocatalytic activity towards water decontamination.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Ranjana Verma, Jay Singh, S. K. Samdarshi, Anchal Srivastava
Summary: A fundamental understanding of the dynamism of charge-transfer characteristic at different phases and pH combinations is essential for the development of highly efficient light harvesting photocatalysts. This study explores the phase modulation at different pH values and its relationship with photocatalytic activities, demonstrating that pH control can be used to manipulate the phase transition and size of TiO2 nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Amanda Chen, Wen-Fan Chen, Tina Majidi, Bernadette Pudadera, Armand Atanacio, Madhura Manohar, Leigh R. Sheppard, Rong Liu, Charles Christopher Sorrell, Pramod Koshy
Summary: Uniformly codoped anatase TiO2 thin films with equal Mo and Cr concentrations were fabricated using sol-gel spin coating and ion implantation. Both methods did not result in homogeneous dopant distributions, leading to decreased crystallinities and partial amorphisation. The photocatalytic performances of the films were poor and correlated with the band gap, indicating the effects of different doping methods on performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Victor Chausse, Jordi Llorca
Summary: A quartz microreactor with 28 microchannels was used to photoproduce hydrogen from liquid water-ethanol using an Au/TiO2 photocatalyst and UV light. The catalytic wall photoreactor configuration outperformed the slurry photoreactor configuration, with hydrogen yields more than three times higher under the same operation conditions.
Article
Nanoscience & Nanotechnology
Xiaoxu Ran, Jie Ren, Shufen Zhang, Yue Wu, Suli Wu
Summary: This study presents a hollow-SiO2-supported WO3 photonic crystal with tunable refractive index, resulting in large-area PC samples with good surface morphology and bright multicolor output. The pixelated structure can dynamically display different numeric and alphabetic patterns.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yoonsang Park, Hoang Tran Bui, Yurim Sohn, Cheolwoo Park, Bupmo Kim, Taehyung Lee, Daegun Kim, Dajin Lee, Kilwon Cho, Hyo Won Kim, Woosung Kwon, Wooyul Kim
Summary: In this study, nanocomposites composed of graphite-derived carbon dots (GCDs) and TiO2 were shown to have ligand-to-metal charge transfer (LMCT) activity across the entire visible-light spectrum. The effect of GCDs on the photocatalytic activity of TiO2 was investigated through the production of hydrogen peroxide and the degradation of pollutants. The research demonstrates the formation of an LMCT band in TiO2/GCD nanocomposites and provides a novel method for expanding the light-absorption spectrum of photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Adam Kubiak, Hubert Fuks, Marcin Frankowski, Anna Szymczyk, Michal Ceglowski
Summary: In this study, TiO2-graphite photocatalysts were synthesized using a one-step in situ microwave procedure, and the influence of graphite content on the crystal structure, surface area development, and optical properties of the photocatalysts was determined. The presence of graphite caused a red shift in the absorption spectra, and a tailor-made LED photoreactor was designed to match the spectrum of the photocatalyst and the light source, resulting in enhanced elimination of sulfamethoxazole. The TiO2-graphite systems showed higher sulfamethoxazole removal efficiency compared to the reference TiO2, and exhibited good reusability, suggesting the potential of this spectral matching approach for wastewater treatment plants.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Qi Li, Yuxing Ouyang, Hongliang Li, Liangbing Wang, Jie Zeng
Summary: This Review summarizes recent advances in the photocatalytic conversion of methane, focusing on the construction of effective semiconductor-based photocatalysts and the performance of various photocatalysts in methane conversion. Challenges and future perspectives in the photocatalytic oxidation of methane need to be addressed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Almudena Aguinaco, Jose M. Manuel, Eduardo Blanco, Manuel Dominguez, Rocio Litran, Juan J. Delgado, Milagrosa Ramirez-del-Solar
Summary: The optical properties of 5wt% Fe3O4-TiO2 thin films were evaluated in detail in this study. The results showed that the incorporation of 5wt% Fe3O4 improved the optical properties and enhanced the separation efficiency of photoexcited electron-hole pairs in the photocatalyst. The study also proposed a mechanism for solar photocatalytic processes based on experimental results.