Article
Chemistry, Physical
Martijn J. Mekkering, Jasper Biemolt, Jeen de Graaf, Yi-An Lin, Nicolaas P. van Leest, Alessandro Troglia, Roland Bliem, Bas de Bruin, Gadi Rothenberg, Ning Yan
Summary: This study demonstrates that the agglomeration of isolated atom sites can be prevented by dissolution/exsolution of metal atoms into/from the support in the case of Rh/Al2O3 single-atom catalysts. A series of catalysts are designed, synthesised and characterised to study the impact of exsolution in the dry reforming of methane. The catalysts' performance improves with increasing reaction time due to the migration of rhodium atoms from the subsurface to the surface. The main factor affecting catalyst performance is atom migration, despite the changes in rhodium oxidation state during catalysis. The implications of these results for real-life catalyst preparation are discussed.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Amaury Decoster, Yuanshuang Zheng, Fabien Dhainaut, Pascal Granger
Summary: Methane oxidation was studied on Rh/CexZr1-xO2 catalysts, and the preparation method of CexZr1-xO2 support was found to significantly affect catalytic performance. Catalysts prepared by coprecipitation method showed the best performance with the highest conversion and the lowest activation barrier, but weak resistance to thermal aging. Aged coprecipitated catalysts mimicked the kinetic behavior of catalysts prepared by crystal templating method, indicating the involvement of a single site reaction mechanism.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Shiva Fazlikeshteli, Xavier Vendrell, Jordi Llorca
Summary: Monometallic Pd and Ni and bimetallic Pd-Ni catalysts supported on CeO2 were prepared and tested for syngas production by the partial oxidation of methane. Bimetallic Pd-Ni/CeO2 catalysts exhibited higher methane conversion and syngas yield compared to monometallic Ni/CeO2 and Pd/CeO2. The bimetallic catalysts prepared by ball milling showed syngas production at lower temperatures. Various preparation parameters were examined, and the best performance was achieved with a bimetallic catalyst prepared at 50 Hz for 20 min, containing only 0.12 wt% Pd and 1.38 wt% Ni. Stability tests demonstrated superior stability for mechanochemically prepared bimetallic Pd-Ni/CeO2 catalysts. The results suggest that the impressive dispersion of metal species and strong interaction with the CeO2 surface contribute to the improved performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Maila Danielis, Luis E. Betancourt, Ivan Orozco, Nuria J. Divins, Jordi Llorca, Jose A. Rodriguez, Sanjaya D. Senanayake, Sara Colussi, Alessandro Trovarelli
Summary: The milling of Palladium acetate and CeO2 under dry conditions results in robust and environmentally friendly catalysts with excellent methane oxidation activity. The characterization techniques used in this study identified the presence of Pd-0/Pd2+ species with different degrees of interaction with ceria (Ce3+/Ce4+), which are believed to be responsible for the enhanced catalytic activity. This study provides insight into the mechanistic understanding of the catalytic performance of Pd/CeO2 catalysts prepared by dry milling.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Andre L. A. Marinho, Raimundo C. Rabelo-Neto, Florence Epron, Nicolas Bion, Fabio B. Noronha, Fabio Souza Toniolo
Summary: The Pt@CeO2 and Pt@CeZrO2 catalysts were found to have a significant impact on the carbon removal mechanism in dry reforming of methane, due to their higher presence of reactive oxygen species, making them more resistant to coke formation.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Materials Science, Ceramics
D. Tovar-Vargas, B. Ferrari, A. J. Sanchez-Herencia, M. Anglada, E. Jimenez-Pique
Summary: The study showed that all composites have high resistance to low temperature degradation, and exhibit a combination of high hardness, elastic modulus, strength, and resistance to low temperature degradation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
D. Tovar-Vargas, E. Roitero, M. Anglada, E. Jimenez-Pique, H. Reveron
Summary: Ceria-stabilized zirconia-based composites have enhanced hardness, strength, and fracture toughness, along with excellent aging resistance, especially for the 10Ce-1CaO-5Al(2)O(3) composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Cheoulwoo Oh, Jiwon Kim, Yun Jeong Hwang, Ming Ma, Jong Hyeok Park
Summary: This study successfully utilized ZrO2 nanotubes decorated with Co3O4 nanoparticles as electrochemical anode to achieve partial oxidation of methane, producing C3 alcohol products. The nanostructure engineering strategy contributes to enhancing catalytic activity for electrochemical methane oxidation, providing a new synthesis approach for researchers.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Asim Riaz, Felipe Kremer, Tak Kim, Suchinda Sattayaporn, Takuya Tsuzuki, Wojciech Lipinski, Adrian Lowe
Summary: Solar-driven thermochemical routes allow for solar energy storage in chemical form through synthetic fuel production. Vanadium-doped ceria materials exhibit improved cycle capacity and enhanced syngas production rates. The addition of vanadium decreases the temperature required for methane oxidation and increases the efficiency of oxygen carrier for syngas production.
Article
Chemistry, Physical
Jikang Yao, Yuanjie Xu, Hua Yang, Zhuangzhuang Ren, Lizhi Wu, Yu Tang
Summary: The research on rhodium catalyst on boron nitride revealed the metallic state of Rh during the partial oxidation reaction, as well as the formation of B-OH and B-H with the reactive gaseous environment, synergistically boosting the POM activity.
Article
Chemistry, Physical
Hiroki Nakayama, Makoto Nagata, Toshihisa Tomie, Tomoaki Ishitsuka, Nobuyuki Matsubayashi, Yukihiro Shimizu
Summary: In this study, the valence band spectra of Rh catalysts on various supports were measured and correlated with the catalytic activities in the CO-NO reaction. The effects of SMSI on the activities of Rh catalysts were analyzed using density functional theory calculations. The study reveals the critical mechanisms whereby SMSIs contribute to oxygen-mediated reactions on catalyst surfaces.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Energy & Fuels
Shiva Fazlikeshteli, Xavier Vendrell, Jordi Llorca
Summary: In this study, monometallic Ru, Pd, and bimetallic Ru-Pd catalysts were prepared via mechanochemical and conventional incipient wetness impregnation methods and used in the partial oxidation of methane (POM). The results showed that bimetallic catalysts exhibited higher catalytic activity and stability compared to monometallic ones, and the catalysts prepared by mechanochemical method produced synthesis gas at a lower temperature compared to conventional catalysts.
Article
Materials Science, Multidisciplinary
Manohar Prasad, Koustuv Ray, Apurba Sinhamahapatra, Siddhartha Sengupta
Summary: By incorporating zirconium into ceria, a ceria-zirconia solid solution was formed, which enhanced the catalyst's oxygen storage capacity, reducibility, and Ni dispersion. The solid solution exhibited improved efficiency in methane and carbon dioxide conversion, as well as reduced carbon deposition.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
K. Shefer, V. N. Rogozhnikov, T. Larina, L. M. Kovtunova, O. A. Stonkus, I. A. Chetyrin, E. A. Suprun, E. M. Moroz
Summary: In this study, rhodium catalysts supported on bayerite and pseudoboehmite alumina, calcined at 800°C, were synthesized and tested in the partial oxidation of methane. The physicochemical properties of the supports and catalysts were investigated using various methods, showing that smaller rhodium particles were formed on bayerite oxide and the catalyst with pseudoboehmite-type support exhibited better performance in the reaction.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Applied
Cecilia Mateos Pedrero, Silvia Gonzalez Carrazan, Patricio Ruiz
Summary: Alumina supported samples with a layer of tetragonal zirconia crystals were prepared, and impregnation with Ni and Rh maintained this layer of tetragonal ZrO2. Different Zr environments and charge densities were observed after tests in CPOM and CPOE. The modified support significantly improved the catalysts' performances, particularly in enhancing hydrogen production.
Article
Chemistry, Applied
Xiaoyang Guo, Estelle Vanhaecke, Per Erik Vullum, Jianyu Ma, P. V. Daham S. Gunawardana, John C. Walmsley, De Chen, Hilde J. Venvik
Summary: Ni and Fe act as catalysts for carbon formation, leading to metal dusting corrosion in industrial alloys. By studying the initial reaction phenomena, researchers aim to minimize corrosion through optimal alloy selection and pretreatment. Results show that Cr2O3 surface oxide layer reduces metal dusting corrosion rate, while (Ni, Fe, Cr)3O4 spinel formation continuously yields new carbon.
Article
Chemistry, Applied
Hongqin Ma, Yanan Guan, Wenyao Chen, Zhijun Sui, Gang Qian, De Chen, Xinggui Zhou, Xuezhi Duan
Summary: The study explores the support effects of cesium catalysts on the vapor-phase aldol condensation of MeOAc with HCHO using Al2O3 with different morphologies and crystal phases. The research shows that a balance between acidic and basic sites is crucial for the production of MA in this reaction.
Article
Nanoscience & Nanotechnology
Dandan Hou, Shengping Zhang, Xiaobo Chen, Ruiyang Song, Dongxu Zhang, Ayan Yao, Jiayue Sun, Wenxuan Wang, Luzhao Sun, Buhang Chen, Zhongfan Liu, Luda Wang
Summary: This study presents a facile method for fabricating nanoporous atomically thin membranes (NATMs) by directly casting a porous polymer substrate onto graphene. The resulting flexible nanoporous polymer substrate provides sufficient mechanical support without compromising the permeance of the NATMs. The NATMs, with proper pore size and a uniform spongelike structure, demonstrate salt resistance and 3-5 times higher gas permeance than commercial polymeric membranes, bridging the gap between laboratory-scale proof-of-concept and practical applications in the industry.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Hongfei Ma, Erling S. Sollund, Wei Zhang, Endre Fenes, Yanying Qi, Yalan Wang, Kumar R. Rout, Terje Fuglerud, Marco Piccinini, De Chen
Summary: A kinetic model considering the dynamic nature of active sites in Mars-van Krevelen type reactions was developed to predict the evolution of reactant and product composition, as well as CuCl2 concentration in the solid catalyst. By combining transient and steady-state kinetic modeling, the model successfully described the transient response of reduction and oxidation steps, as well as the reaction at steady state under different conditions, providing a better understanding of Mars-van Krevelen type reactions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Xiaobo Chen, Shengping Zhang, Dandan Hou, Hongwei Duan, Bing Deng, Zhiyang Zeng, Bingyao Liu, Luzhao Sun, Ruiyang Song, Jinlong Du, Peng Gao, Hailin Peng, Zhongfan Liu, Luda Wang
Summary: Traditional polymeric membranes face a trade-off between permeance and selectivity, whereas nanoporous atomically thin membranes show potential to break this trade-off and achieve outstanding selectivity and permeance. Through plasma treatments, graphene membranes can be tuned to increase selectivity and achieve high separation performance for various processes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Juncong Yuan, Zhaoning Song, Dong Lin, Xiang Feng, Yongxiao Tuo, Xin Zhou, Hao Yan, Xin Jin, Yibin Liu, Xiaobo Chen, De Chen, Chaohe Yang
Summary: In this work, a facile and mesoporogen-free strategy was reported to manipulate the pore structure and particle size of TS-1 using a concentrated system. The novel TS-1 showed higher Ti concentration on surface, higher surface area, abundant mesopores, and reduced crystal size, leading to a good PO formation rate with enhanced catalytic stability as a bifunctional Au-Ti catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Xiaoli Yang, Jia Yang, Yalan Wang, Tao Zhao, Haoxi Ben, Xuning Li, Anders Holmen, Yanqiang Huang, De Chen
Summary: The Na and S-modulated FeMnOx catalysts play a crucial role in enhancing CO conversion, promoting olefin formation, and suppressing methane generation in Fischer-Tropsch synthesis of light olefins. Multiple characterizations and kinetic analysis confirmed that the promoters increase the formation of active species and lower CO activation energy. The study provides a practical strategy for developing highly active and stable FTO catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Jonas Van Belleghem, Jia Yang, Pieter Janssens, Jeroen Poissonnier, De Chen, Guy B. Marin, Joris W. Thybaut
Summary: An extended Single-Event MicroKinetic (SEMK) model successfully simulated Steady State Isotopic Transient Kinetic Analysis (SSITKA) data for Co catalyzed Fischer-Tropsch Synthesis (FTS), providing meaningful estimates for activation energies and atomic chemisorption enthalpies. The model analysis revealed the nature of two site types and the reaction preference for CO on step sites, as well as the role of terrace sites in methane production and alkane hydrogenation. The metal particle size effect was attributed to the increasing importance of terrace sites on reaction kinetics.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Jie Yang, Erlend Bjorgum, Hui Chang, Ka-Ke Zhu, Zhi-Jun Sui, Xing-Gui Zhou, Anders Holmen, Yi-An Zhu, De Chen
Summary: Research has shown that the dynamic nature of active sites on La-Fe-based perovskites in chemical looping methane oxidation is influenced by the Fe coordination environment (and hence the oxygen vacancy concentration), which is the key parameter governing the catalyst selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Optics
Yukun Wang, Fan Ye, Ji Li, Xiaobo Chen, Juntong Xi, Xiaojin Xu
Summary: This paper presents an underwater fuel assembly deformation measurement system based on visual measurement units, which features a waterproof and radiation-shielding design, reflective structure design, dual-optical line laser triangulation principle, and underwater multilayer refractive geometry. Through field measurement and verification, the system achieves high measurement accuracy for bow and twist deformation, providing a strong guarantee for measuring fuel assembly deformation parameters in deep water and high radiation environments.
Article
Thermodynamics
Xin Zhou, Shangfeng Li, Yuan Wang, Jiewenjing Zhang, Zhibo Zhang, Changgui Wu, Xiaobo Chen, Xiang Feng, Yibin Liu, Hui Zhao, Hao Yan, Chaohe Yang
Summary: The study introduced a novel hierarchical catalytic cracking process for crude oil, leading to increased conversion rate and olefin yields. Optimization of key operating parameters improved hydrogen and carbon atoms efficiency, net present value, and internal rate of return. Additionally, the novel process reduced greenhouse gas emissions, wastewater generation, and non-renewable energy consumption compared to conventional processes.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Xiukuang Zhang, Jie Yin, Qian Lei, Xiangpeng Meng, Xiaobo Chen, Zhou Li
Summary: The study showed that high-throughput fabrication using directed energy deposition allowed for rapid production of gradient Cu-Fe-Cr alloys, with liquid diffusion and decomposition precipitation contributing to gradient variation in microstructure and composition, leading to increased hardness. Machine learning was successfully employed to predict alloy hardness, aiding in the acceleration of alloy design and fabrication.
Article
Optics
Xiao Yang, Xiaobo Chen, Juntong Xi
Summary: This work presents an efficient initial value estimation method for speckle control points matching using digital image correlation (DIC) based on perspective transformation. The proposed method achieves higher calibration accuracy compared to regular planar chessboard or circular marker array calibration targets, as well as higher measurement precision compared to the speckle pattern calibration method that uses SIFT-based initial value estimation.
Article
Chemistry, Physical
Qing Lu, Chen Chen, Qian Di, Wanli Liu, Xiaohui Sun, Yongxiao Tuo, Yan Zhou, Yuan Pan, Xiang Feng, Lina Li, De Chen, Jun Zhang
Summary: Efficient and stable electrocatalysts are crucial for the electrocatalytic CO2 reduction reaction (CO2RR) into chemical products. In this study, a NC@Ni/C nano-composite with a core-shell structure was developed as an effective electrocatalyst for CO2RR to CO over a wide potential range. The catalyst exhibited high CO Faradaic efficiency and excellent stability, primarily attributed to the pyridinic-N doping in the carbon shell of Ni NPs.
Article
Chemistry, Multidisciplinary
Miao Song, Dehong Chen, Yafeng Yang, Maoqiao Xiang, Qingshan Zhu, Hongdan Zhao, Liam Ward, Xiao-Bo Chen
Summary: A disproportionation-decomposition strategy was developed to synthesize single-crystalline {100} faceted TiC powders, which exhibited outstanding electrochemical performance in the hydrogen evolution reaction. The overpotential of TiC {100} crystal planes was 392 mV at 10 mA cm(-2), which is 52% lower than randomly faceted TiC counterparts.
ADVANCED FUNCTIONAL MATERIALS
(2021)
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.
