Article
Chemistry, Physical
Songcan Wang, Boyan Liu, Xin Wang, Yingjuan Zhang, Wei Huang
Summary: By designing a nanoporous MoO3-x/BiVO4 heterojunction photoanode, we have improved the efficiency of charge separation in bismuth vanadate, resulting in significantly enhanced photoelectrochemical performance. Stable photoelectrochemical water splitting with high photocurrent density and applied bias photon-to-current efficiency is achieved by depositing dual oxygen evolution cocatalysts.
Article
Chemistry, Multidisciplinary
Hang Chen, Jingguo Li, Lingshen Meng, Sanghyun Bae, Rolf Erni, Daniel F. Abbott, Shangkun Li, Carlos A. Triana, Victor Mougel, Greta R. Patzke
Summary: Immobilization of a (Co4O4)-O-II cubane with proven catalytic performance on BiVO4 photoanodes through layer-by-layer assembly strategy resulted in enhanced photocurrent and stability. Thickness tuning of the Co4O4 layer had significant effects on photocurrents and charge carrier behavior. The Co4O4 layer was found to prolong carrier lifetime, suppress recombination, and enhance charge transfer, with flexible roles depending on the applied potentials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Can Li, Wenjun Fan, Shanshan Chen, Fuxiang Zhang
Summary: This review presents the recent advances of BiVO4-constituted overall water splitting systems, focusing on the effective utilization of charge carriers in both photoelectrocatalytic and photocatalytic approaches. Various strategies for improved charge carrier utilization are summarized and analyzed in detail.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Pooja Varma, K. Arun Joshi Reddy, D. Amaranatha Reddy, Madhusudana Gopannagari, Tae Kyu Kim
Summary: Researchers demonstrated the role of SnO2 hierarchical microspheres and ferrihydrite nanosheets as hole-blocking and hole-storage layers for efficient water oxidation by BiVO4 photoanodes. The optimized SnO2@BiVO4/FN photoanodes exhibited remarkable photocurrent density at 1.23 V versus RHE with excellent stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Jianyong Feng, Huiting Huang, Wenxiu Guo, Xiaoming Xu, Yingfang Yao, Zhentao Yu, Zhaosheng Li, Zhigang Zou
Summary: By investigating the material properties of WO3 underlayers on the performance of BiVO4 photoanodes, this study identified surface defects, electron transferring capabilities, and coverage ratios on conducting substrates as key parameters to consider for constructing efficient BiVO4 photoanodes. This deeper understanding of the functions and promotional effects of WO3 underlayers for BiVO4 photoanodes will provide valuable guidelines for the design and optimization of other photoelectrodes towards efficient solar energy conversion.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Jianqiao Liu, Wenchao Chen, Qinda Sun, Yilin Zhang, Xinran Li, Jiangpeng Wang, Chao Wang, Yue Yu, Lin Wang, Xuelian Yu
Summary: An oxygen vacancy-enriched WO3/BiVO4 photoanode modified with CoPi cocatalysts has been developed for significant enhancement in PEC performances. Experimental results and theoretical calculations show that oxygen vacancies can improve charge transfer between semiconductor interfaces, tune electronic structure, decrease energy barriers, and enhance hydrophilic ability of the electrode, leading to highly efficient water splitting systems.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kexin Ren, Jiayi Zhou, Zihao Wu, Qi Sun, Limin Qi
Summary: In this study, a unique BiVO4(BVO)/BiOCl nanobowl photoanode with dual heterojunctions was fabricated, which effectively enhanced light absorption and reduced carrier diffusion path. The dual heterojunctions facilitated electron transfer and bulk charge separation, resulting in a remarkable photocurrent density and excellent bulk charge separation efficiency. This work highlights the potential of integrating dual heterojunctions and morphology engineering in high-performance photoelectrodes for efficient solar conversion.
Article
Chemistry, Physical
Ivan Grigioni, Annalisa Polo, Maria Vittoria Dozzi, Kevin G. Stamplecoskie, Danilo H. Jara, Prashant Kamat, Elena Selli
Summary: Photoelectrochemical water splitting is a technology that converts solar energy into oxygen and hydrogen. Research on WO3/BiVO4 heterojunction photoanodes shows that sensitizing WO3 with a BiVO4 layer can improve the efficiency of photo current.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Chenyu Zhou, Lihua Zhang, Xiao Tong, Mingzhao Liu
Summary: The study found that the PEC activity of water splitting is enhanced at higher electrolyte temperatures due to the role of thermal energy in improving charge carrier transport in BiVO4. Additionally, irreversible surface reconstruction was observed at elevated temperatures in the presence of hole scavengers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Xiaotian Yang, Peichen Jiang, Qian Yu, Hao Jiang, Xiaoyong Xu
Summary: In this study, an orderly decoupled modulation strategy is proposed to improve the overall efficiency of photoelectrochemical water oxidation by tradeoff among multistage dynamics. The concept is demonstrated on a nanoporous BiVO4 photoanode, showing a significant increase in the product of three dynamics efficiencies by adjusting film thickness and activating the surface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jingyi Lin, Xiujun Han, Siyuan Liu, Ying Lv, Xin Li, Yixin Zhao, Yao Li, Lianzhou Wang, Shenmin Zhu
Summary: This study presents a method to enhance the photocurrent density of bismuth vanadate (BiVO4) photoanodes using a nitrogen-doped cobalt-iron oxide (N-CFO) cocatalyst layer. The N-CFO/BVO photoanode shows higher photocurrent density compared to pure BVO and CFO/BVO with oxygen vacancies. Mechanism studies reveal that nitrogen dopants improve the electrical conductivity and reaction activity of cobalt-iron oxide. This work provides a novel strategy for designing efficient and cheap cocatalysts for photoanodes using Prussian blue analogues.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Qiao-Ling Mo, Shuo Hou, Zhi-Quan Wei, Xiao-Yan Fu, Guangcan Xiao, Fang-Xing Xiao
Summary: Metal oxides-based photoelectrochemical cells have attracted enduring interest as a sustainable and environmentally friendly technique for solar energy conversion. However, the efficiency of these photoelectrodes is limited by sluggish charge transport dynamics, tough vectorial controllable charge migration route, and confined light absorption. In this study, we demonstrate a tunable construction of homogeneous transition metal chalcogenides heterostructured photoanodes using a simple cation exchange strategy. The resulting composite photoanodes show significantly enhanced performance for PEC water splitting under visible and simulated solar light irradiation, mainly due to improved interfacial charge transfer/separation. This ion exchange approach can be applied to other transition metal chalcogenides-based hybrid photoanodes, providing a new avenue for solar energy conversion.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Annalisa Polo, Maria Vittoria Dozzi, Ivan Grigioni, Charles Lhermitte, Nukorn Plainpan, Luca Moretti, Giulio Cerullo, Kevin Sivula, Elena Selli
Summary: Mo6+ doping enhances the photoelectrochemical performance of BiVO4 photoanodes in water oxidation. The mechanisms behind this improvement are revealed through transient absorption spectroscopy and impedance spectroscopy, showing that Mo6+ ions improve electron transport and surface properties of BiVO4 photoanodes.
Article
Chemistry, Multidisciplinary
Chunlian Hu, Chunjiang Xu, Xiaohu Li, Bonan Li, Xiaoshuo Ma, Jiayu Zhu, Congzhao Dong, Yong Ding
Summary: In this study, a novel molecular cocatalyst, noble-metal-free polyoxometalate (Ni3POM), was incorporated into a typical FeOOH/BiVO4 composite photoanode, greatly enhancing the photoelectrochemical water splitting performance. The Ni3POM/FeOOH/BiVO4 photoanode displayed a photocurrent density of 5.2 mA/cm2 at 1.23 V vs RHE, achieving a 4-fold enhancement compared to the pristine photoanode. The photoanode also exhibited 99% photocurrent density retention after a 1-hour stability test at 1.23 V vs RHE, indicating improved PEC stability. Additionally, a 1.1% ABPE value was achieved at 0.8 V vs RHE.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Jianhua Ge, Xiulong Ding, Daochuan Jiang, Lei Zhang, Pingwu Du
Summary: In this study, FeP was introduced as a precious-metal-free cocatalyst for enhancing the performance of worm-like nanoporous BiVO4 photoanodes in PEC water splitting. FeP nanoparticles were successfully deposited on the surface of BiVO4 to improve the photocurrent density and ABPE, showing potential for overall solar-driven water splitting.
Article
Nanoscience & Nanotechnology
Maria Anagnostopoulou, Areti Zindrou, Thomas Cottineau, Andreas Kafizas, Clement Marchal, Yiannis Deligiannakis, Valerie Keller, Konstantinos C. Christoforidis
Summary: This work reports the development of tunable organic/inorganic heterojunctions comprised of cobalt oxides (Co3O4) and modified carbon nitride (CN), targeting on optimizing their response under UV-visible irradiation. The study highlights the importance of MOF structures used as precursors in forming advanced materials and the stepwise functionalization of the individual parts in nanocomposites for the development of materials with superior activity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Joel Luke, Yong-Ryun Jo, Chieh-Ting Lin, Soonil Hong, Chandran Balamurugan, Jehan Kim, Byoungwook Park, Kwanghee Lee, James R. Durrant, Sooncheol Kwon, Bong-Joong Kim, Ji-Seon Kim
Summary: A ternary blend consisting of a tertiary acceptor incorporated into a donor:non-fullerene acceptor (NFA) binary blend has been explored for improving the power conversion efficiency and stability of organic bulk heterojunction photovoltaics (OPVs). In situ transmission electron microscopy and X-ray diffraction spectroscopy were employed to investigate the effects of the tertiary component during annealing. It was found that the addition of the tertiary component delays the glass transition temperature of edge-on-oriented polymer donor, prohibits the glass transition of face-on-oriented polymer donor, broadens the crystallization temperature of the tertiary acceptor, and enhances the overall crystallinity of the donor and acceptor phases. Moreover, the ternary blend exhibits a homogeneously distributed nanoscale domain morphology, resulting in superior device performance and stability compared to the binary blend.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Xinyue Guo, Zixuan Ma, Yuling Yuan, Yan Kang, Hong Xu, Zhiping Mao, Yimeng Ma
Summary: The photoelectrochemical oxidation of methylene blue was studied, focusing on the kinetics and thermodynamics of decoloration and mineralization. Hematite and titania photoanodes were compared, and the difference was found to be related to the valence band depth. Methylene blue was mineralized by the titania photoanode, while only oxidized to small fragments by hematite. The importance of considering the thermodynamic and kinetic challenges in methylene blue oxidation was emphasized.
Review
Nanoscience & Nanotechnology
Aiswarya Abhisek Mohapatra, Manasi Pranav, Suraj Yadav, Chandrasekhar Gangadharappa, Jiaying Wu, Chiara Labanti, Jakob Wolansky, Johannes Benduhn, Ji-Seon Kim, James Durrant, Satish Patil
Summary: The introduction of nonfullerene acceptors has led to high-efficiency organic solar cells, but they still have greater losses in open-circuit voltage compared to inorganic or perovskite solar cells. To improve this, the high dipole moment of twisted perylene-diimide is utilized as a nonfullerene acceptor in this study. By modifying the cathode with a polyethylenimine interlayer, the open-circuit voltage of the organic solar cells is enhanced.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Tack Ho Lee, Sam A. J. Hillman, Soranyel Gonzalez-Carrero, Alessandro Difilippo, James R. Durrant
Summary: This study investigates the role of a PM6 polymer overlayer on the photoexcited carrier dynamics in a Y6:PM6 bulk-heterojunction photoanode. The additional polymer layer increases the hole lifetime in the solid-state film. When the photoanode is electrically coupled to a platinum cathode, long-lived hole polaron states are observed on the timescale of seconds, leading to enhanced ascorbic acid oxidation performance without a co-catalyst.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Andres F. Gualdron-Reyes, Roser Fernandez-Climent, Sofia Masi, Camilo A. Mesa, Carlos Echeverria-Arrondo, Federica Aiello, Federica Balzano, Gloria Uccello-Barretta, Jhonatan Rodriguez-Pereira, Sixto Gimenez, Ivan Mora-Sero
Summary: A surface defect passivation strategy is used to prepare non-encapsulated CsPbX3 nanocrystals dispersed in fully alcohol environments, resulting in remarkable stability. By using DDAB during material post-treatment, highly luminescent and stable CsPbBr3 PNCs are achieved with near-unity photoluminescence quantum yield. DDAB mediates defect suppression and strengthens surface passivation by inducing alcohol molecule ionization.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Chiara Nomellini, Annalisa Polo, Camilo A. Mesa, Ernest Pastor, Gianluigi Marra, Ivan Grigioni, Maria Vittoria Dozzi, Sixto Gimenez, Elena Selli
Summary: The performance of composite WO3/BiVO4 photoanodes can be improved by nanostructuring the WO3 underlayer, mitigating charge transport and recombination issues.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yuan Quan, Marcus H. N. YiO, Yuankai Li, Rupert J. Myers, Andreas Kafizas
Summary: In this study, the effect of Bi particle size in BiOI/Bi junctions on their photocatalytic function towards NO gas was investigated. The results showed that BiOI decorated with nano-sized Bi particles (BiOI/Bi NPs) displayed the highest photocatalytic activity, achieving NO and NOx conversion efficiencies of -33% and -11% under UVA light. In contrast, the BiOI microflowers decorated with micron-sized Bi particles (BiOI/Bi MPs) and pure BiOI samples showed lower activities. The enhanced performance of BiOI/Bi NPs was attributed to the interfacial contact between Bi and BiOI, promoting charge carrier separation and the formation of VO.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhu Meng, Ernest Pastor, Shababa Selim, Haoqing Ning, Marios Maimaris, Andreas Kafizas, James R. Durrant, Artem A. Bakulin
Summary: In photoelectrochemical cells (PECs), carrier transport plays a significant role in photon-to-current conversion efficiency. Many metal oxides used in PECs exhibit thermally activated transport due to charge localization and interaction with defects, which affects catalysis. To improve transport efficiency, nanostructuring, selective doping, and photothermal treatments have been used. This study demonstrates a novel approach to directly activate localized carriers in bismuth vanadate (BiVO4) using infrared photons. The results show that optical excitation of localized charges enhances PEC current by modulating their kinetics. This research provides insights into defect-related photophysics and offers a possible method for device control.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Seul-Yi Lee, Patricio Serafini, Sofia Masi, Andres F. Gualdron-Reyes, Camilo A. Mesa, Jhonatan Rodriguez-Pereira, Sixto Gimenez, Hyo Joong Lee, Ivan Mora-Sero
Summary: In this study, a highly efficient photoanode electrode for the degradation of pollutants was prepared by directly forming nanoscale perovskite on the surface of mesoporous titanium dioxide film, and optimization was achieved by introducing a thin aluminum oxide coating layer. A photovoltaic/PEC tandem system was also developed to supply high voltage for efficient oxidation of pollutants without an external bias.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Nuria Romero, Didac A. Fenoll, Laia Gil, Sergi Campos, Jordi Creus, Gerard Marti, Javier Heras-Domingo, Vincent Colliere, Camilo A. Mesa, Sixto Gimenez, Laia Francas, Luis Rodriguez-Santiago, Xavier Solans-Monfort, Mariona Sodupe, Roger Bofill, Karine Philippot, Jordi Garcia-Anton, Xavier Sala
Summary: In this study, Ru-based nanoparticles were synthesized using the organometallic approach and thermal oxidation treatments. The resulting hybrid nanomaterials, consisting of RuO2 core and metallic Ru surface, showed enhanced electrocatalytic activity in hydrogen evolution reaction.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Anna A. Wilson, Lucy Hart, Thomas Shalvey, Michael Sachs, Weidong Xu, Benjamin Moss, Eva Mazzolini, Asim Mumtaz, James R. Durrant
Summary: The charge carrier dynamics of SrTiO3 were analyzed using ultrafast transient absorption spectroscopy, which revealed significantly slower recombination kinetics compared to other metal oxides. This slow recombination is attributed to SrTiO3's high dielectric constant and is believed to play a central role in its exceptional performance in photocatalytic systems.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Anna A. Wilson, Thomas P. Shalvey, Andreas Kafizas, Asim Mumtaz, James R. Durrant
Summary: This study investigates the charge carrier dynamics in SrTiO3 under applied bias and reveals the presence of Ti3+ defect states, which limit electron extraction and photocurrent. However, a long lifetime of photogenerated holes in SrTiO3 is observed even without applied bias, which is important for overcoming slow kinetics and hole accumulation in water oxidation reactions.
SUSTAINABLE ENERGY & FUELS
(2023)
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.