Article
Chemistry, Physical
Joana L. Lopes, Ana C. Estrada, Sara Fateixa, Nikolai A. Sobolev, Ana L. Daniel-da-Silva, Tito Trindade
Summary: This research focuses on finding a green chemical strategy to enhance the sustainability of bismuth vanadate for photocatalytic water purification. By hydrothermal carbonization of kappa-carrageenan, a biopolymer derived from red seaweeds, monoclinic BiVO4 supported on carbon spheres is successfully prepared. These hybrid materials exhibit visible-light photocatalytic activity for the removal of tetracycline in water. They possess appropriate wavelength range for photon absorption, good adsorption capacity, durability, and the ability to be reused in subsequent catalytic steps, making them cost-effective and sustainable.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Engineering, Environmental
Tayebeh Sharifi, Dora Crmaric, Marin Kovacic, Marin Popovic, Marijana Kraljic Rokovic, Hrvoje Kusic, Gabriela Ambrozic, Damir Kralj, Jasminka Kontrec, Bostjan Zener, Urska Lavrencic Stangar, Dionysios D. Dionysiou, Ana Loncaric Bozic, Drazan Jozic
Summary: By tailoring an isotype homojunction BiVO4 structure, the opto-electronic and photocatalytic properties were improved, resulting in a higher DCF removal rate. The formation of the isotype homojunction led to enhanced charge separation, leading to an increased efficiency in degrading DCF.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Dongyang He, Hao Yang, Dexin Jin, Jiao Qu, Xing Yuan, Ya-nan Zhang, Mingxin Huo, Willie J. G. M. Peijnenburg
Summary: Research demonstrates that by tuning reaction parameters, the synthesized g-C3N4 can achieve extremely high photocatalytic activity, outperforming P25 TiO2 and other g-C3N4-based nanocomposites with lower catalyst consumption, and requiring only short ultrasonic pretreatment for excellent performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Pavithra Muthukumar Sathya, Sethumathavan Vadivel, Taeho Shin, Harshavardhan Mohan
Summary: Significant progress has been made in the synthesis of sustainable photocatalysts, with the doping of tungsten oxide onto bismuth vanadate resulting in improved photocurrent response. The material exhibits excellent crystallographic properties and shows higher efficiency in CO2 reduction and hydrogen evolution.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yuvaraj M. Hunge, Akihiro Uchida, Yusuke Tominaga, Yuta Fujii, Anuja A. Yadav, Seok-Won Kang, Norihiro Suzuki, Isao Shitanda, Takeshi Kondo, Masayuki Itagaki, Makoto Yuasa, Suresh Gosavi, Akira Fujishima, Chiaki Terashima
Summary: This research work reported the synthesis of spherical-shaped bismuth vanadate (BiVO4) photocatalyst using a cost-effective, simple, chemical hydrothermal method and studied the effect of deposition temperatures on its properties. The study confirmed the monoclinic scheelite phase of BiVO4 and successful photocatalytic degradation of crystal violet dye using the synthesized photocatalyst.
Article
Chemistry, Physical
Limeng Wu, Xin Yue, Ying Chang, Kunlei Wang, Jinyue Zhang, Jiajie Sun, Zhishun Wei, Ewa Kowalska
Summary: Monoclinic scheelite bismuth vanadate (BVO) microballs modified with 2 wt% of noble metals (Au, Ag, Cu, Pt, Pd) showed enhanced photocatalytic performance, with Cu/BVO exhibiting the highest activity. The proposed Z-scheme mechanism between copper oxides and BVO was suggested to be responsible for the improved photocatalytic activity. The participation of zero-valent forms of noble metals as electron scavengers, plasmonic sensitizers, or conductors should also be considered in the enhancement of photocatalytic performance.
Article
Engineering, Environmental
Qi Wang, Biao Xue, Meng Tan, Ningyi Li, Hao Zhou, Hao Du, Guoxiang Yang, Huaze Zhu, Qiang Li
Summary: Heterogeneous photocatalysis has gained extensive attention in environmental remediation. The formation of heterojunction can greatly improve the charge separation efficiency and light response of single semiconductor. Ternary heterojunctions inhibit the recombination of photogenerated charge carriers and show high photocatalytic efficiency. This research provides guidance for the rational design of multi-components heterojunction for photocatalytic environmental remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Guangqing Liu, Mengwei Xue, Qinpu Liu
Summary: Carbon doping using 2,4,6-triaminopyrimidine as precursor was applied to prepare graphitic carbon nitride, leading to improved optical and electrical properties. The carbon-doped samples exhibited enhanced photoelectrochemical performance and hydrogen evolution rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Yaxi Tian, Dongyun Que, Rongfeng Guan, WenYan Shi
Summary: Cu-BiVO4 photocatalysts with excellent visible light response were successfully fabricated by modification with a SiO2 template and Cu doping. Cu doping can reduce carrier recombination rate and greatly improve the ability of BiVO4 to degrade RhB. The crystal phase and photocatalytic activity of Cu-BiVO4 are influenced by doping amount. The mechanism of Cu doping was investigated using first-principles calculations.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Theodosis Giousis, Shun Fang, Matteo Miola, Shuangxue Li, Alexandros Lazanas, Mamas Prodromidis, Eelco K. Tekelenburg, Dimitrios Moschovas, Maria A. Loi, Petra Rudolf, Dimitrios Gournis, Paolo P. Pescarmona
Summary: This study investigated germanane (GeH) and butyl-functionalized germanane (GeBuxH(1_x)) as photocatalysts for water purification under visible light irradiation. GeH showed the best activity in the degradation of rhodamine B, while GeBuxH(1_x) proved to be the best photocatalyst for the degradation of phenol.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Yu-Xin Ye, Cheng Wen, Jinhui Pan, Jia-Wei Wang, Yuan-Jun Tong, Songbo Wei, Zhuofeng Ke, Long Jiang, Fang Zhu, Ningbo Zhou, Minjie Zhou, Jianqiao Xu, Gangfeng Ouyang
Summary: This study achieved efficient production of hydrogen peroxide at ambient conditions using an elaborately modified carbon nitride photocatalyst, presenting a potential example for truly sustainable and economical methods.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Benyin Zhang, Hao Xu, Mingming Wang, Luhan Su, Caobin Wu, Qingguo Wang
Summary: In this study, a stable material, BiBDC/BiVO4 heterojunction, was constructed by using a hydrothermal method to efficiently remove organic pollutants from water under visible light irradiation. The improved performance is attributed to the broadened optical absorption range and accelerated separation of photogenerated electrons and holes by the heterojunction. BiBDC/BiVO4 also showed excellent reusability and stability, making it a potential candidate for practical application.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Min Chen, Jianjun Zhao, Yaru Wang, Xubo Huang, Yiming Xu
Summary: The study demonstrated a significant enhancement in photocatalytic activity of monoclinic BiVO4 by surface deposition of CuCoOx, with CuCoOx/BiV showing a much higher rate of phenol oxidation compared to other co-catalyst combinations. Photoluminescence and electrochemical studies revealed the different roles played by various co-catalysts in improving charge separation and promoting reactions like O-2 reduction and water oxidation on BiV.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Diego Alvarez-Bustos, Felipe Sanchez-Minero, Victor Santes, Issis Claudette Romero-Ibarra, Jose Antonio de los Reyes Heredia, Reyna Rios-Escobedo, Francisco Tzompantzi-Morales, Carlos Eduardo Santolalla-Vargas
Summary: The study evaluated the photocatalytic activity of FeS-2Cl/TiO2 catalyst on visible-light degradation of phenol, showing significantly improved degradation compared to unmodified TiO2.
Article
Energy & Fuels
Yichao Wang, Zipeng Xing, Chunxu Wu, Meijie Liu, Jiapeng Gao, Na Zhang, Zhenzi Li, Haixia Liu, Wei Zhou
Summary: The development of peanut-like Zn0.5Cd0.5S/BiVO4 heterostructure composite photocatalysts is a promising approach to enhance photocatalytic efficiency under visible light irradiation.
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.