Article
Biochemistry & Molecular Biology
Ivalina Trendafilova, Manuel Ojeda, John M. Andresen, Alenka Ristic, Momtchil Dimitrov, Natasa Novak Tusar, Genoveva Atanasova, Margarita Popova
Summary: Transition metals as catalysts for total VOC oxidation at low temperatures are challenging. This study prepared and tested iron-modified SBA-15, AlSBA-15, and ZrSBA-15 materials with varying Fe loading for toluene oxidation. The results showed that increasing Fe loading improved the oxidation rate and decreased the temperature required for complete toluene removal. Surface properties of the mesoporous support influenced the type and localization of iron oxide species, and 5 wt. % Fe-containing ZrSBA-15 exhibited excellent activity in the total oxidation of toluene at lower temperatures due to the synergistic effect of Fe-Zr and the presence of accessible and stable Fe2+/Fe3+ active sites.
Article
Nanoscience & Nanotechnology
Aniruddha Singha, Jyotishman Kaishyop, Tuhin Suvra Khan, Biswajit Chowdhury
Summary: In this study, the impact of the surface morphologies and exposed facets of WO3 nanoparticles on the photocatalytic oxidation of toluene was investigated. It was found that WO3(100) had higher activity for the adsorption of O-2 and toluene, resulting in better overall performance for the oxidation reaction compared to WO3(110). The experimental results showed that WO3 nanocubes exhibited exceptional photocatalytic performance with high selectivity and stability.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jiaxin Xu, Jing Li, Xiaoling Peng, Yanting Yang, Yunxiong Zeng, Bo Hong, Jingcai Xu, Xinqing Wang, Hongliang Ge
Summary: In this research, alpha-Fe2O3/SBA-15 catalysts were prepared using one-step and two-step impregnation methods, which were referred to as S1 and S2, respectively. Ordered mesoporous alpha-Fe2O3 nanowires (S3) were obtained by removing SBA-15 from S2. The S1, S2, and S3 catalysts were used for degrading Rhodamine B (RhB) solutions using the photocatalytic-Fenton method. S2 showed the highest degradation efficiency, completely degrading RhB within 30 minutes of visible light irradiation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Yao Zhu, Shaoqin Chen, Siyuan Fang, Zhangyang Li, Chunling Wang, Yun Hang Hu
Summary: Utilizing a thermo-photo catalytic process with a visible-light-responsive Pt/WO3 catalyst, highly efficient visible-light driven methane conversion has been achieved for the first time. The production of liquid oxygenates mainly in the form of CH3OH and CO2 evolution are found to proceed via photoassisted thermal catalysis. Solid isotope evidence confirmed that CH3OH, HCHO, and CO2 are produced via parallel reactions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Kaustav Chatterjee, Roberto Dos Reis, Jaye K. Harada, Jette K. Mathiesen, Sandra L. A. Bueno, Kirsten M. O. Jensen, James M. Rondinelli, Vinayak Dravid, Sara E. Skrabalak
Summary: Metal oxychloride intergrowths have been studied as stable visible light photocatalysts, with systematic variation of Ta/Gd molar ratio to rationalize their photocatalytic activity. These intergrowths provide new strategies for designing durable artificial photosynthetic systems.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Applied
Edgar Tututi-Rios, Horacio Gonzalez, Denis A. Cabrera-Munguia, Aida Gutierrez-Alejandre, Jose L. Rico
Summary: Through the sol-gel method, Sn-SBA-15 catalysts modified with -PrSO3H groups were synthesized, which significantly improved the acid properties of the catalysts and increased the conversion rate of the esterification reaction between oleic acid and methanol.
Article
Chemistry, Physical
Kexin Wei, Andac Armutlulu, Yinxu Wang, Gang Yao, Ruzhen Xie, Bo Lai
Summary: The development of a durable TLFO nanosphere as a heterojunction photocatalyst with PMS has shown efficient removal of ATZ. The TLFO heterojunction demonstrates outstanding herbicidal effects by enhancing charge separation rate and generating reactive oxidant species.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Chemistry, Multidisciplinary
Pallavi Sarkar, Shubhajit Das, Swapan K. Pati
Summary: This article summarizes the progress in the study of non-boron Lewis acids since 2015, which are an important component of Frustrated Lewis pairs.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Physical
Sayuri Okunaka, Yutaka Hitomi, Hiromasa Tokudome
Summary: Selective organic conversion using semiconductor photocatalysts has attracted attention for sustainable synthesis processes. In this study, a novel strategy using a redox mediator and Pd/BiVO4 photocatalyst was introduced for the oxidation of toluene. The addition of N-hydroxyphthalimide (NHPI) significantly increased the activity of benzaldehyde production under blue-to-green light irradiation, achieving high efficiency and excellent selectivity.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Zhang Caisong, Zhang Jiali, Ou Keru, Liu Yongxin, Guo Zanru, Chen Xi, Cheng Guangzeng, Hu Fengping
Summary: A visible-light-driven ZIF-8-coated CdS popcorn-like photocatalyst was successfully synthesized by controlling the preferential construction of ligands, showing high efficiency and stability. The photocatalytic efficiency of the ZIF-8-coated CdS popcorn-like photocatalysts remained high after five cycles, with relative humidity playing a crucial role in the degradation process.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Lei Chen, Yanjiao Chen, Xuan Dai, Jiaming Guo, Xinhua Peng
Summary: The study shows that Ag/SBA-15 catalysts exhibit good activity and selectivity for the oxidation of toluene under solvent-free conditions, with tolerance to a wide range of substrates. Additionally, the kinetic study reveals a pseudo-first-order reaction for the oxidation reaction.
Article
Energy & Fuels
Xiangyang Mao, Ge Liu, Bolun Yang, Jianxuan Shang, Bo Zhang, Zhiqiang Wu
Summary: This study successfully regulated the micro-reaction environment of oxygen carriers through the embeddedness strategy, improving the recycling and partial oxidation performance. The results showed that Fe2O3@SBA-15 has higher CO selectivity and catalytic performance, along with good cycle stability.
Article
Green & Sustainable Science & Technology
Birgitta Narindri Rara Winayu, Wan-Hua Mao, Hsin Chu
Summary: Toluene, a harmful volatile organic compound, can be degraded by improving the TiO2 photocatalyst through doping with reduced graphene oxide (rGO), sulfur (S), and nitrogen (N) elements. The addition of 1wt% rGO/S0.05N0.1TiO2 composition showed the highest toluene photocatalytic degradation.
SUSTAINABLE ENVIRONMENT RESEARCH
(2022)
Article
Chemistry, Inorganic & Nuclear
Xianqiang Huang, Sen Liu, Zhen Zhou, Haizhen Zhang, Zongyin Gao, Guodong Shen, Huaiwei Wang, Zhi Wang, Qingxia Yao, Di Sun
Summary: This study developed a bottom-up strategy to construct robust metal-organic frameworks for visible-light-driven oxidation of sulfides.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Environmental Sciences
Ze-Yu Liu, Wen-Qian Huang, Chuan-Qing Huang, Zhao-Zhen Liu, Xiao-Yue Tang, Wei-Chang Chen, Zheng-Zheng Tang, Yu-Xing Huang, Shuo-Chun Zheng, Lin Lin, Changzhu Li, Yong Ye
Summary: Photocatalytic disinfection using graphitic carbon nitride (g-C3N4) is a promising method for eliminating pathogenic bacteria. In this study, a novel defective 3D porous g-C3N4-Fe3O4 photocatalyst was constructed using a dendritic mesoporous silica template. The photocatalyst exhibited enhanced visible light absorbance, increased photo-induced current response and O2 adsorption compared to pristine g-C3N4. The pg-C3N4-Fe3O4 photocatalyst showed excellent visible-light-driven photo-catalytic bactericidal activity, with a bactericidal efficiency 2.5 times higher than pg-C3N4. This enhanced performance is attributed to the involvement of Fe3O4 in cascade photo-Fenton reaction.
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)