Article
Chemistry, Multidisciplinary
Yali Liu, Yuenan Zheng, Danyang Feng, Liangliang Zhang, Ling Zhang, Xiaowei Song, Zhen-An Qiao
Summary: The study found that mesoporous Co3O4 catalyst exhibited excellent catalytic activity for the selective oxidation of aromatic alkanes, particularly the conversion of ethylbenzene to acetophenone with a conversion rate of 42% and a selectivity of 90% at 120 degrees Celsius. Furthermore, it was discovered that mCo(3)O(4) followed a unique catalytic pathway of direct oxidation from aromatic alkanes to aromatic ketones, as opposed to the conventional stepwise oxidation to alcohols and then to ketones. This implied that mCo(3)O(4) had a higher kinetic favorability for the direct oxidation of ethylbenzene to acetophenone compared to non-selective oxidation on commercial Co3O4.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Amir H. Omranpoor, Anupam Bera, Denise Bullert, Matthias Linke, Soma Salamon, Samira Weber, Heiko Wende, Eckart Hasselbrink, Eckhard Spohr, Stephane Kenmoe
Summary: The interaction between 2-propanol and Co3O4(001) was investigated to understand the molecular pathways of catalytic oxidation. Experimental and theoretical studies confirmed that 2-propanol adsorbs molecularly. The presence of water not only competes for adsorption on the surface, but also inhibits the deprotonation of 2-propanol. The presence of water deactivates the lattice oxygen, reducing surface activity.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Jianfei Yao, Fang Dong, Xin Xu, Meng Wen, Zhongying Ji, Hua Feng, Xiaolong Wang, Zhicheng Tang
Summary: A novel 3D printed layered ordered mesoporous template is developed to encapsulate active species in a confined way, leading to the formation of a monolithic catalyst. The resulting catalyst exhibits excellent catalytic performance and stability in the combustion of toluene, highlighting its potential in industrial VOCs elimination.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Jianfei Yao, Fang Dong, Xin Xu, Meng Wen, Zhongying Ji, Hua Feng, Xiaolong Wang, Zhicheng Tang
Summary: We report a novel 3D printed layered ordered mesoporous template that can encapsulate active Co-MOFs species to achieve the goal of monolithic catalyst. The monolithic OM-Co3O4@SiO2-S catalyst has excellent catalytic performance, water resistance, and thermal stability. The introduction of binder enhances the performance of the catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Tobias Falk, Sven Anke, Hamidreza Hajiyani, Sascha Saddeler, Stephan Schulz, Rossitza Pentcheva, Baoxiang Peng, Martin Muhler
Summary: Co3O4 nanospheres with a mean diameter of 19 nm exhibited superior catalytic activity and stability in the selective oxidation of 2-propanol to acetone in the gas phase compared to 9 nm spheres. Despite smaller specific surface area, the larger nanospheres showed increased 2-propanol adsorption capacity attributed to preferential (110) surface orientation. Temperature-programmed oxidation experiments revealed excellent stability at 430 K with only 10% loss of initial activity after 100 h, indicating enhanced interaction of the larger nanospheres with O-2.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Tobias Falk, Eko Budiyanto, Maik Dreyer, Julia Bueker, Claudia Weidenthaler, Malte Behrens, Harun Tueysuez, Martin Muhler, Baoxiang Peng
Summary: A series of transition-metal-substituted mesoporous cobalt oxide catalysts were synthesized and applied in the selective oxidation of 2-propanol. Copper and nickel substitutions were found to be beneficial for the catalytic activity, while chromium, manganese, and iron substitutions were detrimental.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jianfei Yao, Fang Dong, Hua Feng, Zhicheng Tang
Summary: Hierarchical Co3O4/MnOx and MnOx/Co3O4 nanoarrays were successfully prepared on Ni foam by primary and secondary hydrothermal processes, showing excellent catalytic performance in toluene oxidation. The monolithic MnOx/Co3O4/NF catalyst exhibited the highest activity and stability, potentially replacing noble-metal catalysts. XPS and H-2-TPR analysis confirmed the presence of active species and good interaction between metals, while in situ DRIFTs results revealed key intermediates and reaction paths in the toluene combustion process.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Environmental
E. J. Moreno-Roman, J. Gonzalez-Cobos, N. Guilhaume, S. Gil
Summary: Three different Mn2O3 catalysts were synthesized and tested for oxidation reactions of toluene and 2-propanol in both single and binary component mixtures. The catalytic activity was influenced by factors such as specific surface area, reducibility, and active surface-oxygen species. The presence of both toluene and 2-propanol in the mixture promoted the catalytic activity, as indicated by lower reaction temperatures and shifted acetone production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Julian Klein, Laura Kampermann, Jannik Korte, Maik Dreyer, Eko Budiyanto, Harun Tuysuz, Klaus Friedel Ortega, Malte Behrens, Gerd Bacher
Summary: In situ photoluminescence spectroscopy allows for studying thermocatalytic processes and gaining information about the performance of the catalyst and the formation of intermediate products.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jingxia Yang, Nevzat Yigit, Jury Moller, Gunther Rupprechter
Summary: By synthesizing Co3O4-modified CeO2 via different sol-gel routes, three different nanocomposite morphologies were obtained: CeO2-supported Co3O4 layers, intermixed oxides, and homogeneously dispersed Co. The CeO2-supported Co3O4 layers exhibited the best performance in CO oxidation, reducing the light-off temperature by about 200 degrees C. Intermixed oxides and Co-doped CeO2 suffered from lower dispersion and organic residues.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Yuntai Xi, Fang Dong, Zhongying Ji, Zhicheng Tang, Jiyi Zhang
Summary: This paper proposes two methods for preparing monolithic Co3O4/SiO2 catalysts using 3D direct ink writing technology. The results show that the two-step method yields catalysts with better catalytic performance, while the one-step method yields catalysts with better thermal stability and water resistance. Additionally, different types of SiO2 supports have varying effects on the catalyst's activity and physical properties.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Zhongnan Gao, Dongyue Zhao, Qingpeng Cheng, Dejian Zhao, Yuexi Yang, Ye Tian, Tong Ding, Song Song, Lihong Guo, Xingang Li
Summary: The mesoporous SiO2-encapsulated nano-Co3O4 catalyst, with unique pitaya-like structure, exhibits high CO oxidation activity and thermal stability. It can be effectively regenerated, improves cobalt resources utilization efficiency, and is suitable for practical applications.
Article
Chemistry, Physical
Wenjun Zhu, Xing-bao Wang, Chuang Li, Xiao Chen, Wen-ying Li, Zhongmin Liu, Changhai Liang
Summary: A surface defect engineering strategy was developed to regulate surface lattice oxygen species in Co3O4 catalyst via alkaline-earth metal doping-etching. The synthesized Ca-Co3O4-Ac catalyst exhibited remarkable catalytic activity and stability in propane oxidation. The doping-etching strategy increased the specific surface area, low-temperature reducibility, and oxygen mobility of the Co3O4 catalyst. Active lattice oxygen species induced by the strategy promoted propane activation on the catalyst surface.
JOURNAL OF CATALYSIS
(2022)
Article
Green & Sustainable Science & Technology
Yuntai Xi, Fang Dong, Zhongying Ji, Zhicheng Tang, Jiyi Zhang
Summary: This paper discusses the preparation of novel monolithic Co3O4/SiO2 catalysts using 3D direct ink writing technology and compares two different printing methods. The results show that the two-step method leads to a stronger interaction between the active component and support, while the one-step method offers better thermal stability and water resistance.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Qiuyu Shen, Zhihui Lu, Fukun Bi, Dongfeng Zhang, Lijuan Li, Xiaodong Zhang, Yiqiong Yang, Minghong Wu
Summary: In this paper, three different reduction methods were used to synthesize Pt-loaded Co3O4, and it was found that the catalyst produced by the NaBH4 reduction method had the best activity. Through characterization and experiments, it was revealed that this synthesis method optimized the electronic metal-support interaction (EMSI) of the catalyst, leading to electron transfer between Pt species and Co3O4. The catalysts also showed excellent water resistance, stability, and recycling performance, and the possible degradation mechanism of toluene was revealed as well.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rajat Sainju, Dinithi Rathnayake, Haiyan Tan, George Bollas, Avinash M. Dongare, Steven L. Suib, Yuanyuan Zhu
Summary: The study found unexpected nanoparticle surface refacetting and size-dependent structural development and final NiO morphology during the thermal oxidation of Ni nanoparticles. A unified oxidation theory with a two-stage oxidation process was proposed for size-dependent Ni nanoparticle oxidation. Individual nanoparticle-level oxidation kinetics were established and correlated with nanoparticle microstructural evolution.
Article
Nanoscience & Nanotechnology
Shubhashish Shubhashish, Alireza S. Amin, Yanliu Dang, Sarah J. Karasik, Harshul S. Khanna, Steven L. Suib
Summary: A general and straightforward synthesis method for large-pore highly mesoporous metal oxide nanoparticles has been reported, using a modified inverse micelle formation and diols as solvents. Various metal oxides have been successfully synthesized, with ethylene glycol giving the highest pore diameter.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Scott Bamonte, Shubhashish Shubhashish, Harshul Khanna, Seth Shuster, Samantha Joy B. Rubio, Steven L. Suib, S. Pamir Alpay, Sanjubala Sahoo
Summary: Carbon capture and storage (CCS) technologies have the potential for reducing greenhouse gas emissions and creating clean energy solutions. This research investigates the CO2 gas adsorption capacity of MoS2 sheets doped with iron, cobalt, and nickel, and shows that nickel-doped MoS2 has the highest adsorption capacity. Furthermore, doping can lead to changes in the electronic structure and magnetic solutions of MoS2, which can affect its CO2 adsorption ability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Can Wang, Zhengyan Han, Xuehua Zou, Haibo Liu, Hanlin Wang, Daobing Shu, Tianhu Chen, Steven L. Suib
Summary: In this study, ultrathin MnO2 nanolayers were coated on the surface of commercial goethite using a simple chemical precipitation method. This hybrid design enhanced the HCHO oxidation reaction and effectively removed HCHO and bacteria from indoor air.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Laura A. Achola, Shubhashish Shubhashish, Zachary Tobin, Yue Su, Luisa F. Posada, Yanliu Dang, Jianhang Shi, Andrew G. Meguerdichian, Menka Jain, Steven L. Suib
Summary: Mesoporous transition metal ferrites with interconnected networks and high surface areas exhibit improved characteristics in catalytic applications, with NiFe2O4 showing high activity in the electrochemical oxygen evolution reaction.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Lamya Tabassum, Mohammad Khairul Islam, Inosh Prabasha Perea, Meilin Li, Xueni Huang, Habiba Tansim, Steven L. Suib
Summary: In this study, transition-metal-doped CuS/CuO nanoarrays with superior electrocatalytic activity for OER in alkaline media were successfully synthesized. The Fe-doped material showed significantly enhanced electrochemical performance and good stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yanliu Dang, Jinlong Wang, Junkai He, Xueting Feng, Zachary Tobin, Laura A. Achola, Wen Zhao, Liaoyong Wen, Steven L. Suib
Summary: Researchers have developed self-standing RuO2-NiO nanosheets on conductive nickel foam (RuO2- NiO NSs/NF) as a highly active and stable electrocatalyst for hydrogen evolution. The nanosheet electrode exhibits superior intrinsic activity and kinetic stability due to the in situ-formed Ru/RuO2 interface and self-standing structure. It demonstrates higher turnover frequencies and lower overpotentials compared to Pt/C, making it a promising candidate for commercial seawater splitting.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Shubhashish Shubhashish, Surani Wijenayake, Xueni Huang, Luisa F. Posada, Samantha Joy B. Rubio, Harshul S. Khanna, Destiny Dziengiel, Ali Mansour, Steven L. Suib
Summary: A straightforward synthesis method for highly mesoporous molybdenum oxide has been demonstrated using inverse micelles and molybdenum-oxo cluster formation. The synthesized catalyst is stable, crystalline, and phase pure MoO3, and shows 65 times higher activity than commercial parts. These materials exhibit excellent catalytic performance as solid acids in electrophilic substitution reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Steven L. Suib, Jan Prech, Ewelina Szaniawska, Jiri Cejka
Summary: Metal substitution in molecular sieve systems is a driving force for developing novel catalytic processes in green chemistry and achieving sustainability in the chemical industry and our everyday life. Metal-substituted molecular sieves provide advantages such as high surface areas, molecular sieving effects, confinement effects, and variability and stability in active site and morphology.
Article
Chemistry, Multidisciplinary
D. Randil K. Weerasuriya, Keshani Hiniduma, Snehasis Bhakta, Lisa M. Nigro, Luisa F. Posada, Haiyan Tan, Steven L. Suib, Richard Kremer, James F. Rusling
Summary: This study reports a low-cost, mix-and-read COVID-19 assay using a synthetic SARS-CoV-2 sensor, imaged and processed using a smartphone. The assay was optimized for saliva and demonstrated a detection limit of 200 TCID50/mL in artificial saliva.
Article
Chemistry, Physical
Samson O. Owalude, Isaac T. Olowookere, Inosh Perera, Harshul S. Khanna, Elsa Njeri, Xueni Huang, Andrew G. Meguerdichian, Hamad-Tijani O. Ayilara, Steven L. Suib
Summary: A series of mixed-phase Zr-doped TiO2 photocatalysts were synthesized using a sol-gel technique and their performance in the photocatalytic degradation of orange II dye was investigated. Characterization methods including XRD, TEM, XRF, Raman spectroscopy, TGA, and XPS revealed the composition and structure of the materials. The results showed that the photocatalysts consisted of zirconium, titanium, and oxygen, with anatase and rutile phases of TiO2 present. The undoped TiO2 exhibited the highest stability, and the materials successfully degraded orange II dye solution up to 7 cycles through asymmetric cleavage of the azo bond.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Shanka Dissanayake, Noah Leonard, Shubhashish Shubhashish, Isaac T. Olowookere, Inosh Prabasha Perera, Luisa F. Posada, Mohammad Khairul Islam, Steven L. Suib, Partha Nandi
Summary: This study introduces a novel method for the production of allyl acrylate from allyl alcohol as the starting substrate. The reaction employs a reusable catalyst based on Li-ion-promoted mesoporous manganese oxide, offering mild reaction conditions. The catalytic activity, selectivity, and substrate scope of the reaction are reported to have a yield of 60%. The proposed system consists of an allylic alcohol substrate, O2 as the oxidant, N-hydroxyphthalimide (NHPI) as the promoter, trichloro acetonitrile (CCl3CN) as the solvent, and Li-promoted manganese oxide as the catalyst (surface area >150 m2/g).
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Alireza Shirazi Amin, Wen Zhao, Panteha Toloueinia, Inosh Prabasha Perera, Jared Fee, Yue Su, Luisa F. Posada, Steven L. Suib
Summary: This research reports the synthesis and characterization of an artificially layered LiTaO3 electrode material for lithium-ion batteries. The designed layered anode shows high specific capacity and cycling-induced capacity increase. Various characterization techniques were used to understand the mechanisms behind the improved performance of the electrode.
Article
Chemistry, Multidisciplinary
Hanlin Chen, Gaoling Wei, Zijuan You, Xiaoliang Liang, Peng Liu, Yiping Yang, Fuding Tan, Suhua Wang, Jieqi Xing, Steven L. Suib
Summary: For perovskite La1-xCaxCoO3 (Ca-x, x = 0-0.3), Ca-0.2 with the closest O p band center to the Fermi level, exhibits the highest catalytic activity for toluene oxidation. The O p band center plays a crucial role in determining reducibility and active oxygen content. This discovery is beneficial for designing highly active perovskite catalysts.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Qiang Luo, Hanyi Duan, Michael C. McLaughlin, Kecheng Wei, Joseph Tapia, Joseph A. Adewuyi, Seth Shuster, Maham Liaqat, Steven Suib, Gael Ung, Peng Bai, Shouheng Sun, Jie He
Summary: We used polymer N-heterocyclic carbenes (NHCs) to control the microenvironment surrounding metal nanocatalysts, enhancing their catalytic performance in CO2 electroreduction. Three polymer NHC ligands were designed with different hydrophobicity: hydrophilic poly(ethylene oxide) (PEO-NHC), hydrophobic polystyrene (PS-NHC), and amphiphilic block copolymer (PEO-b-PS-NHC). The introduction of hydrophobic PS segments led to a twofold increase in the partial current density for CO formation. The hydrophobic polymers altered the hydrogen bonding structures of water, improving CO2 diffusion and subsequent reduction.
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
