Article
Chemistry, Multidisciplinary
Deepali Aswal, Priyanka Bamola, Chanchal Rani, Saurabh Rawat, Abhinav Bhatt, Sandeep Chhoker, Mohit Sharma, Charu Dwivedi, Rajesh Kumar, Himani Sharma
Summary: This study focuses on the enrichment of photocatalytic activity by different WS2-based heterostructures, and investigates the impact of interfacial interaction. The results show that the 2D-2D MoS2/WS2 heterostructure exhibits the highest catalytic activity, which is attributed to its higher conductivity and better charge separation.
Article
Engineering, Chemical
Hongfei Yin, Chunyu Yuan, Huijun Lv, Kaiyue Zhang, Xue Chen, Yongcai Zhang, Yongzheng Zhang
Summary: This study successfully improved the treatment efficiency of antibiotics-containing wastewater by fabricating a 2D/1D Bi2WO6/C3N5 heterojunction photocatalyst. The optimized Bi2WO6/C3N5 nanocomposite exhibited excellent catalytic activity in the photocatalytic degradation of TCH and revealed its photocatalytic mechanism.
Article
Nanoscience & Nanotechnology
Moumita Chandra, Utsab Guharoy, Debabrata Pradhan
Summary: The present research focuses on improving the efficiency and sustainability of solar-to-chemical energy conversion. By utilizing nanostructured materials, the water splitting technology has been revolutionized to produce decoupled hydrogen and value-added organic chemicals simultaneously. Through theoretical modeling and experimental verification, a non-noble metal-based catalyst has been demonstrated to exhibit high efficiency in successful redox reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Environmental Sciences
Adem Sreedhar, Qui Thanh Hoai Ta, Jin-Seo Noh
Summary: This review discusses the use of mixed-dimensional BiOX/TiO2 interfaces in 0D, 1D, and 2D nanostructures to degrade toxic matter. It explores the optimization of charge carrier generation, separation, and transfer pathways, as well as the combination of different charge transfer mechanisms.
Article
Materials Science, Multidisciplinary
Guolong Ni, Yanhua Li, Shuhuan Wang, Qun Li
Summary: The 1D/2D BN/TiO2 nanostructure, constructed by incorporating BN whiskers into TiO2 nanosheets, shows significantly improved photocatalytic performance and cycling stability. The nanostructure with 12 wt% BN content exhibits a high degradation rate of RhB under visible-light irradiation.
Article
Chemistry, Multidisciplinary
Bo Wang, Hao-Zhi Qian, Yin Peng
Summary: Novel 2D/1D Bi12O17Cl2/beta-Bi2O3 heterostructures were synthesized by calcining Bi(OHC2O4)center dot 2H(2)O/BiOCl precursors, exhibiting higher photocatalytic activity due to improved interface quality and enhanced charge separation and transfer rate. Radical scavenger experiments show that photogenerated holes and O-2(-) play key roles in the photodegradation process.
Article
Nanoscience & Nanotechnology
Priyanka Bamola, Saurabh Rawat, Manushree Tanwar, Mohit Sharma, Charu Dwivedi, Rajesh Kumar, Himani Sharma
Summary: This study reports on the strain-accumulated interfacial modification of 2D/1D-MoS2/TiO2 heterostructures for enhanced photocatalytic activity. The synthesis methods, hydrothermal and chemical vapor deposition (CVD), resulted in different strain types at the MoS2/TiO2 interface. The modified interfaces showed improved charge separation, as confirmed by XPS and UPS analyses.
Article
Environmental Sciences
Izabela Malinowska, Pawel Kubica, Piotr Madajski, Adam Ostrowski, Cristina Gomez Polo, Laura Carvera, Waldemar Bednarski, Anna Zielinska-Jurek
Summary: In this study, a 2D/2D TiO2-GO-ZnFe2O4 composite photocatalyst was synthesized using the fluorine-free lyophilization technique and its potential for ibuprofen degradation was investigated. The composite showed enhanced degradation of ibuprofen under simulated solar light and possessed superparamagnetic properties for easy separation. The photodegradation process resulted in the formation of non-toxic intermediates, while photolysis led to the generation of more toxic by-products. Superoxide radicals and singlet oxygen were found to play significant roles in the ibuprofen photodegradation process based on the degradation analysis and electron spin resonance analysis.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Hao-Zhi Qian, Bo Wang, Meng-Ting Liu, Nan-Nan Zhao, Zheng-Hua Wang, Yin Peng
Summary: A novel 1D/2D Bi2O2CO3-Bi2WO6 heterostructure with high photocatalytic activity was synthesized by high temperature calcination of Bi (OHC2O4)center dot 2H(2)O/Bi2WO6 precursors in CO2. The synergistic effects of the unique 1D/2D heterostructure and the high-quality interface between Bi2O2CO3 and Bi2WO6 contributed to the enhanced photocatalytic performance, where O-2(-) and photogenerated holes played key roles in the photodegradation process. This study offers a simple and general method for synthesizing 1D/2D heterostructures with excellent photocatalytic performance.
Article
Engineering, Chemical
Xiao Chen, Xuran Xu, Xu Jia, Hua Qian, Xufei Zhu
Summary: The emergence of more and more coexisting organic contaminants has posed a threat to public health and aggravated the difficulty of water treatment. Molecularly imprinted photocatalysts, which allow highly selective removal of target active compounds, have been widely used in complex environmental treatment. In this study, Z-scheme molecularly imprinted photocatalysts with CoZn-LDH heterostructure supported by porous C3N4 nanorods were synthesized. The photocatalyst exhibited excellent light capture and high active cavities, resulting in a photodegradation rate of 79.8% for the target compound tetracycline (TC) under visible light within 60 minutes. Moreover, the material showed outstanding selective recognition and photodegradation ability towards TC in the presence of interference, with imprinting factors of 2.18 for ciprofloxacin and 2.33 for cephalothin, respectively. The selective photodegradation mode and pathways were discussed based on comprehensive mechanism experiments. This research provides a new perspective for the design of photocatalysts with selective degradation performance for practical environmental applications.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Lianhu Xu, Yang Meng, Yonghuan Zhao, Juanjuan Su, Jian Han
Summary: In this paper, researchers formed a heterojunction structure by using two-dimensional graphitic carbon nitride (2D g-C3N4) and one-dimensional titanium dioxide nanorods (1D TNr) and modified the surface with a fluorinated silane compound. The resulting material was dispersed in a PVDF/PTFE mixture and formed a coating that can be easily sprayed, exhibiting excellent performance in visible photocatalytic degradation of pollutants and superhydrophobicity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Baohua Yuan, Lingsai Meng, Chaofan Zhang, Lixia Yang, Liangjiu Bai, Huawei Yang, Donglei Wei, Feng Wang, Qingyao Wang, Wenxiang Wang, Hou Chen
Summary: The study presents a hierarchical TiO2 NWAs @ MoS2 core-shell network design that enhances light trapping across the full solar spectrum, benefiting photocatalysis and solar-driven water evaporation. The TiO2 NWAs @ MoS2 achieved high light absorption and evaporation rates under one sun. Additionally, the self-supporting solar absorber demonstrated favorable stability, overcoming challenges in recovering photocatalysts from treated water.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Peng Wang, Tong Song, Cong Xie, Ping Yang
Summary: In this study, Co-Al layered double hydroxide/TiO2 heterostructures were synthesized and showed excellent removal efficiency for Cr(VI) under full solar spectrum irradiation. The optimized loading and interface structure of the composite sample provided high stability and adsorption ability.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Mengdi Yang, Zhimeng Wang, Lizhu Yao, Lei Shi
Summary: Ti3C2/Bi12O17Cl2 composites were prepared by a simple ultrasonic composite method and their successful preparation was confirmed by XRD, TEM, XPS, BET, and DRS analysis. The Ti3C2/Bi12O17Cl2 composite with a Ti3C2 mass fraction of 2% exhibited a degradation rate constant of 0.17406 min-1 for Rhodamine B (RhB), which was 5.5 times higher than that of Bi12O17Cl2 (0.03186 min-1). After 5 cycles of experiments, the degradation rate remained at 93.8%. The introduction of Ti3C2 promoted the migration of photogenerated electrons and holes over Bi12O17Cl2, leading to significantly improved photocatalytic activity of Ti3C2/Bi12O17Cl2 composites. A highly active photocatalyst was proposed.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Physical
Xishun Jiang, Tao Fang, Jia-Jia Tao, Yongchun Zhang, Yangyi Zhang, Yonghua Shi
Summary: Mixed-dimensional TiO2/ZnO/Ag core-shell nanowires were prepared to improve the performance of photoelectrochemical photodetectors. The resulting photodetector exhibited high responsivity, fast response speed, and a broad response from UV to visible region, attributed to the enhanced light absorption and carrier generation and separation caused by the Ag quantum dots and type-II band alignment of TiO2 NWs/ZnO nanosheets.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Paul Henri Alle, Patricia Garcia-Munoz, Kopoin Adouby, Nicolas Keller, Didier Robert
Summary: Household wastewaters contain microplastics and nanoplastics that are not filtered by current wastewater treatment plants, requiring advanced removal technologies such as photocatalysis. Degradation of PMMA and PS nanoparticles using TiO2-P25/beta-SiC foams under UV-A radiation showed that lower pH and flow rate led to faster degradation, with 140-nm PS degrading quicker than 508-nm PS.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Hamza El Marouazi, Pablo Jimenez-Calvo, Edouard Breniaux, Christophe Colbeau-Justin, Izabela Janowska, Valerie Keller
Summary: The study investigated the characteristics of few layer graphene/TiO2 photocatalytic composites with loadings ranging from 0.5 to 11 wt % and their impact on hydrogen production from methanol. It was found that the composites with 0.5 and 1.0 wt % FLG/TiO2 exhibited the best activity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Nicolas Keller, Javier Ivanez, James Highfield, Agnieszka M. Ruppert
Summary: This review critically evaluates the advances in photo-/thermal synergies in catalysis, focusing on the impact of dual-mode excitation on key processes in future solar-biorefineries. It also discusses the classification of possible co-excitation synergies and the inclusion of pan-spectral absorbers in catalyst design towards process intensification.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Javier Ivanez, Patricia Garcia-Munoz, Agnieszka M. Ruppert, Nicolas Keller
Summary: Dual mode excitation of catalysts using both photonic and thermal activation has gained increasing interest in recent years due to its potential benefits in enhancing catalytic reactions. The combination of photon and thermal excitation can increase reaction efficiency and selectivity, especially at high irradiance levels. This new approach allows reactions to be driven at lower temperatures and improves the selectivity for hydrogen production.
Article
Chemistry, Physical
Armelle Sengele, Didier Robert, Nicolas Keller, Valerie Keller
Summary: This study investigated the efficiency of Ta and Sn doped TiO2 photocatalysts for the elimination of diethyl sulfide (DES) and compared their photo-oxidation efficiency with TiO2-P25. Results showed that Sn-doped TiO2 exhibited higher initial activity but deactivated faster, while Ta-doped TiO2 had slower deactivation rate. The adsorption properties of the beta-SiC foams significantly influenced the activity of the catalysts.
Article
Chemistry, Physical
Ana Amoros-Perez, Maria Angeles Lillo-Rodenas, Maria del Carmen Roman-Martinez, Patricia Garcia-Munoz, Nicolas Keller
Summary: TiO2 and TiO2-activated carbon photocatalysts were prepared and tested for the removal of diuron from water. The carbon content was found to influence the removal efficiency, with the sample containing the highest carbon content showing the highest removal rate.
Article
Chemistry, Physical
Patricia Garcia-Munoz, Fernando Fresno, Javier Ivanez, Nicolas Keller
Summary: This study evaluates the control exerted on ruthenium nanoparticles supported on TiO2 by a photoassisted method, showing that the photodeposition rate and Ru-0/Ru delta+ ratio play crucial roles in photocatalytic activity. Nanoparticles synthesized under different irradiance conditions exhibit varied sizes and oxidation states, influencing the overall performance in formic acid oxidation.
Article
Green & Sustainable Science & Technology
Pablo Jimenez-Calvo, Valerie Caps, Valerie Keller
Summary: Solar energy and photocatalysis are key players in the energy transition, with hydrogen emerging as an ideal solar fuel due to its simplicity in the water-splitting reaction. However, the challenge lies in finding a single catalyst with sufficient conversion efficiency. The development of multi-phase composites, plasmonic Schottky junctions, and Z-scheme heterojunctions are promising approaches to enhancing hydrogen production.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Daniel Glass, Raul Quesada-Cabrera, Steven Bardey, Premrudee Promdet, Riccardo Sapienza, Valerie Keller, Stefan A. Maier, Valerie Caps, Ivan P. Parkin, Emiliano Cortes
Summary: Research shows that in photocatalytic processes, the lifetime of in situ generated oxygen vacancies (VO) plays a more important role in catalysis than concentration, with longer-lived VO significantly enhancing photocatalytic activity. Enhanced photocatalytic efficiency is associated with optimal VO concentrations that encourage carrier transport while avoiding charge carrier trapping.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Applied
Patricia Garcia-Munoz, Fernando Fresno, Christophe Lefevre, Didier Robert, Nicolas Keller
Summary: In the search for more efficient low-temperature catalysts, the substitution of La3+ by Ti3+ cations in LaFeO3 orthoferrites was found to enhance the UV-A light driven activity. La1_xTixFeO3 catalysts were synthesized using a modified Pechini sol-gel route with a solid source of titanium. The amorphous content of the TiO2 precursor played a crucial role in the substitution process. The substitution was proposed to occur via solid-solid diffusion between TiO2 and amorphous LaFeO3 during thermal treatment.
Article
Chemistry, Applied
Patricia Garcia-Munoz, Javier Ivanez, Victor A. de la Pena O'Shea, Nicolas Keller, Fernando Fresno
Summary: In this study, the feasibility of using alveolar open-cell beta-SiC foams as a catalyst support for solar hydrogen production was explored. Pt and Ru nanoparticles were obtained through photoassisted synthesis and tested for gas-phase hydrogen production from water-ethanol mixtures. The foam-supported photocatalysts, including Pt/TiO2 and Ru/TiO2, showed activity in solar photocatalytic reactions, with Pt/TiO2 being the most active. The foam pore size had little influence on hydrogen outcome, and a UV-to-hydrogen conversion efficiency of 14% (equivalent to 0.49% solar-to-hydrogen) was achieved under the best conditions, with a photonic efficiency higher than 30%.
Article
Energy & Fuels
Emilia Soszka, Marcin Jedrzejczyk, Nicolas Keller, Agnieszka M. Ruppert
Summary: The sustainable production of environmentally-friendly alternative fuels is important for future biorefinery schemes. In this study, bimetallic Ni-Co/gamma-Al2O3 catalysts were used to efficiently produce 2-MTHF, and the key factors affecting the yield and selectivity were identified.
Review
Chemistry, Multidisciplinary
Patricia Garcia-Munoz, Laura Valenzuela, Deborah Wegstein, Tobias Schanz, Girlie Eunice Lopez, Agnieszka M. Ruppert, Hynd Remita, Jonathan Z. Bloh, Nicolas Keller
Summary: Hydrogen peroxide is a powerful and green oxidant that is used in various applications. The article reviews the recent development of photocatalytic synthesis of hydrogen peroxide, discussing different mechanisms, kinetic models, and key reaction parameters. A wide range of photocatalytic materials, including titania-based and graphitic carbon nitride-based systems, are reviewed. Strategies for enhancing the performance of solar-driven photocatalysts and the search for new photocatalytic materials are discussed. The promise of in situ photocatalytic synthesis of hydrogen peroxide, its coupling with enzymes, and the synthesis of other technical peroxides are also described.
TOPICS IN CURRENT CHEMISTRY
(2023)
Article
Engineering, Environmental
Patricia Garcia-Munoz, Paul Henri Alle, Calogera Bertoloni, Alvaro Torres, Maria Ulagares de la Orden, Joaquin Martinez Urreaga, Marie-Antoinette Dziurla, Fernando Fresno, Didier Robert, Nicolas Keller
Summary: The study investigates the reliability and quantifiability of a wide range of characterization and analytical tools in monitoring the mineralization process of polystyrene nanoparticles. The immobilized reaction mode is found to be superior to the slurry mode due to the absence of restrictive nanoparticulate photocatalyst. Direct imaging and light-scattering characterization provide incomplete and irrelevant data due to the change in polystyrene substrate morphology. TOC analysis remains the most suitable and reliable technique for monitoring and quantifying the mineralization process of polystyrene nanoparticles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Emilia Soszka, Marcin Jedrzejczyk, Christophe Lefevre, Dris Ihiawakrim, Nicolas Keller, Agnieszka M. Ruppert
Summary: This study reports on the efficient synthesis of 2-methyltetrahydrofuran using earth-abundant non-noble metal cobalt catalysts supported on titanium dioxide. The size of cobalt particles and metal-support interaction were found to significantly influence the catalyst's performance, in addition to the catalyst acidity.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
