Article
Nanoscience & Nanotechnology
Yishui Liu, Mengxi Pei, Huanhuan Liang, Xiaodong Wu, Bo Li, Zhichun Si, Feiyu Kang
Summary: Volatile organic compounds (VOCs) are receiving increased attention due to their impact on air pollution and human health. Researchers have developed a photocatalytic system using few-layer CoAl-LDH as a support for Pt nanoparticles, which are coated on CeO2 nanoparticles. This system forms type II heterojunctions and improves the efficiency of VOC removal. The study provides a useful method for the preparation of high-efficiency photothermal catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ruosi Peng, Haozhi Zhang, Yanjie Guo, Weiqing Huang, You Zhang, Junliang Wu, Mingli Fu, Chenglong Yu, Daiqi Ye
Summary: This study investigates the effect of lanthanide doping on the physicochemical properties and catalytic activity of Pt/CeO2 catalysts for toluene oxidation. The results demonstrate a significant impact of lanthanide doping on the catalyst activity, which is closely related to the ion radius and valence state of the dopants. Doping with Gd enhances the catalytic oxidation of toluene over Pt/CeO2 catalyst, possibly by promoting the formation of Gd-Ce complexes and oxygen vacancies.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Shengsheng Chang, Yong Jia, Yiqing Zeng, Fuping Qian, Lina Guo, Shenghua Wu, Jinli Lu, Yunlong Han
Summary: The effect of CeO2 plane exposure on total toluene oxidation was investigated by preparing CeO2 nanorods, nano-octahedrons, and nano-cubes with different plane exposures. The results revealed that the (110) plane of CeO2 was the most beneficial for the dispersion of Pt species, followed by the (111) face. The improved Pt species dispersion enhanced the metal-supports interaction, facilitating the electron transfer and O2 adsorption-activation, thus promoting the total oxidation of toluene.
JOURNAL OF RARE EARTHS
(2022)
Article
Chemistry, Physical
Yue Zhang, Cong Wu, Zhiqiang Wang, Jiawei Ji, Haiqin Wan, Weixin Zou, Qing Tong, Jingfang Sun, Lin Dong, Yu-Wen Chen
Summary: Bimetallic Pt-Ir alloy nanoparticles were successfully prepared by a microwave-assisted method and used as catalysts for toluene combustion. The Pt2.5Ir/CeO2 catalyst showed excellent low-temperature catalytic activity, attributed to the interaction between Pt and Ir, richer adsorbed oxygen species, and low-temperature reducibility.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Applied
Laura Heredia, Estefania Colombo, Paola Quaino, Sebastian Collins
Summary: The adsorption of toluene on cerium oxide was investigated using experimental and computational methods. It was found that toluene undergoes dissociative adsorption, resulting in the formation of benzyl and surface hydroxyl species. Further analysis using DRIFTS and mass spectrometry revealed that the benzyl species are oxidized by lattice oxygen to various products.
TOPICS IN CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Changjin Xu, Yue Zhang, Jing Chen, Song Li, Ya-Wen Zhang, Gaowu Qin
Summary: Noble metal Pt nanocatalysts with unique triple-junction structure exhibit enhanced catalytic stability and high activity for CO oxidation at mild temperatures, attributed to electron donation from graphitized carbon and confinement effect from high-density nanopores of the CeO2 support. Triple-junction Pt-C-CeO2 structure provides new inspiration for high-performance nanocatalyst fabrication.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Srisin Eaimsumang, Nuwong Chollacoop, Apanee Luengnaruemitchai, Stuart H. Taylor
Summary: This study demonstrates a simple hydrothermal synthesis approach for preparing CeO2-supported gold (Au) catalysts, which exhibit enhanced catalytic performance in oxidation reactions when the reducibility of CeO2 support increases and the number of adsorbed peroxide species on the support increases due to Au addition.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Qingyue Wang, Yuxin Li, Ana Serrano-Lotina, Wei Han, Raquel Portela, Ruixuan Wang, Miguel A. Banares, King Lun Yeung
Summary: A unique 1D nanostructure of Pt@CeO2-BDC was prepared for toluene oxidation, facilitating the stepwise oxidation of toluene to CO2 and H2O. The presence of Pt clusters on the catalyst surface promoted the adsorption of toluene and reaction activation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Menglan Xiao, Dawei Han, Xueqin Yang, Narcisse Tsona Tchinda, Lin Du, Yucong Guo, Yuechang Wei, Xiaolin Yu, Maofa Ge
Summary: This study constructs a Pt/Ni-CeO2 catalyst via Ni doping, which enhances the catalytic performance of toluene and improves water- and SO2-tolerance. The introduction of Ni induces the generation of abundant oxygen vacancies, facilitating the activation of oxygen species, while the formation of Pt-NiO interface structure restrains the adsorption of water and SO2 molecules.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Huihui Shi, Peixin Yang, Lu Huang, Yali Wu, Duohuan Yu, Hangfei Wu, Yunhuai Zhang, Peng Xiao
Summary: A novel single-atom Pt-CeO2/Co3O4 catalyst with ultra-low Pt loading (0.06Pt-SA) was fabricated, showing excellent toluene degradation activity and ultra-long durability. The strong metal-support interaction between single atomic Pt and the carrier contributed to the superior performance of the catalyst by enhancing oxygen activation and toluene removal. This study provides inspiration for the development of low-cost and high-performance VOCs catalyst with noble single-atomic modification strategy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Hua Sun, Xiaolin Yu, Yucong Guo, Jiguang Deng, Maofa Ge
Summary: Pt/CeO2-Co3O4 catalyst exhibited excellent catalytic performance in the toluene reaction, attributed to the synergy between surface Co3+ sites and Pt0 species, as well as the high mobility of active oxygen and abundant oxygen vacancies.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Youcai Zhu, Caiting Li, Caixia Liang, Shanhong Li, Xuan Liu, Xueyu Du, Kuang Yang, Jungang Zhao, Qi Yu, Yunbo Zhai, Ying Ma
Summary: Developing efficient and stable non-noble metal catalysts for VOCs oxidation is crucial in controlling air pollution. In this study, different morphologies of CeO2 catalysts were prepared and the CeO2 nanoparticles exhibited the highest efficiency, water resistance, stability, and regeneration ability. In situ DRIFTS combined with DFT were used to understand the oxidation behavior of toluene over the CeO2 nanoparticles catalyst, and it was found that the ring-opening reaction is a rate-controlling step. This study provides a new strategy for exploring high-performance catalysts for VOCs oxidation and other pollutant treatments.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Zhiqiang Wang, Lixin Zhang, Jiawei Ji, Yuchao Wu, Yandi Cai, Xiaojiang Yao, Xianrui Gu, Yan Xiong, Haiqin Wan, Lin Dong, Yu-Wen Chen
Summary: The study presents a novel catalyst Ir/Ce/gamma-Al2O3 for complete oxidation of toluene, featuring small CeO2 and Ir-0 nanoparticles that exhibit higher catalytic activity. Results from XRD, TEM, Raman, and XPS indicate a strong interaction between IrO2 and small CeO2 nanoparticles, leading to enhanced catalytic performance. This development in synthesizing iridium-based catalysts shows promise for the catalytic oxidation of VOCs.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Ehiaghe Agbovhimen Elimian, Meng Zhang, Qiang Li, Jing Chen, Yong Sun, Hongpeng Jia, Jun He
Summary: This study presents a novel strategy of light-driven photothermal catalytic oxidation for the degradation of toluene using yCuOx-WOx/mTiO2_x-USY nanocomposite. The optimized 20CuOx-WOx/mTiO2_x-USY catalyst exhibited excellent catalytic performance with 90.4% toluene conversion and 82.0% CO2 yield under full light irradiation. The catalyst also demonstrated satisfactory stability and benzoate species were identified as major reaction intermediates.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Siyi Ma, Weiliang Han, Fang Dong, Zhicheng Tang
Summary: Pt@CeO2 catalysts with different structures were synthesized and their catalytic performance for toluene combustion was studied. The Pt@CeO2-R catalyst with a nanorod structure exhibited the best activity, which can be attributed to the confinement effect of Pt nanoparticles in Ce-MOFs, as well as the chemical state of Pt species, redox ability, and the amount of active oxygen species.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Behzad Ebadinezhad, Mohammad Haghighi, Hossein Zeinalzadeh
Summary: In this study, the SAPO-34 zeotype with suitable physicochemical properties was used as a catalyst for the production of biodiesel. The simultaneous use of a carbon template and a heteroatom for doping in the catalyst synthesis effectively increased the pore diameter and improved the conversion rate of elainic acid into biodiesel.
Article
Energy & Fuels
Parisa Sadeghpour, Mohammad Haghighi, Amir Haghighi, Maryam Shabani
Summary: This study introduces the ultrasonic-promoted growth of staggered heterostructured nanoparticle-on-nanolayer tin(II) oxide-bulk carbon nanophotocatalysts. The photocatalytic performance of various ratios of SnO2-bulk g-C3N4 nanophotocatalysts was investigated, and the structural properties of the samples were analyzed using multiple characterization techniques. It was found that the tin oxide content in the nanocomposite framework significantly affected the structural properties of the photocatalysts and the separation efficiency of electrons and holes. The suggested reaction mechanism for dye degradation was also discussed in detail.
Article
Chemistry, Physical
Amin Sokhansanj, Mohammad Haghighi, Maryam Shabani
Summary: In this study, novel CuBi2O4 surface-sensitized bismuth subcarbonate nanoheterojuncted photocatalysts were prepared using hydrothermal technique with ultrasonic waves. The photocatalysts exhibited high degradation efficiency for malachite green under sunlight irradiation due to their heterojunction formation and flowerlike morphology. The structural, morphological, and optical properties of the nanophotocatalysts were investigated, and the stability, reaction mechanism, and kinetic evaluation of the selected photocatalyst were examined.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Marziyeh Shabani, Mohammad Haghighi, Alireza Ebrahimi, Sogand Aghamohammadi
Summary: The simultaneous effect of Si source and CTAB application as a surfactant on SAPO-34 preparation was investigated. TEOS as the Si source resulted in small crystallites of SAPO-34, while fumed silica led to larger crystallites.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Energy & Fuels
Ensie Bekhradinassab, Akram Tavakoli, Mohammad Haghighi, Maryam Shabani
Summary: The efficient tablet-like manganese and iron incorporated titania catalyst was synthesized via microwave in the presence of 2-hydroxyethylammonium sulfate (ILS) as both fuel and sulfating agent for biodiesel production. The nature of fuels affected the catalyst's physicochemical properties and performance. MnFeTi(ILS) showed a good capability for producing biodiesel from sunflower and waste oil.
Article
Chemistry, Physical
Amirhossein Mahtabani, Damiano La Zara, Minna Niittymaki, Rafal Anyszka, Ilkka Rytoluoto, Xiaozhen He, Eetta Saarimaki, Paolo Seri, Saeed Saedy, Kari Lahti, Mika Paajanen, J. Ruud van Ommen, Wilma Dierkes, Anke Blume
Summary: Polymer nanocomposites (NCs) have great potential for dielectric applications. The large interfacial area provided by nanoscale fillers can greatly improve the dielectric properties of NCs. This study presents the surface modification of fumed silica nanoparticles (NPs) with polyurea via molecular layer deposition (MLD) and the incorporation of modified NPs into a polymer blend. The effect of urea functionalization on the dielectric properties of NCs is investigated using various methods. The findings suggest that polyurea deposition on NPs results in a bimodal distribution of trap depths, reducing space charge formation at filler-polymer interfaces. MLD shows promise for tailoring the interfacial interactions in dielectric NCs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Surgery
Pirouz Samidoust, Mohammad Taghi Ashoobi, Manouchehr Aghajanzadeh, Mohammad Sadegh Esmaeili Delshad, Mohammad Haghighi
Summary: Boerhaave's syndrome is a rare condition characterized by spontaneous esophageal perforation, which has a high morbidity and mortality rate if not diagnosed and treated promptly. This case report presents a patient with achalasia who was diagnosed with Boerhaave's syndrome and had a good outcome after early diagnosis and treatment.
INTERNATIONAL JOURNAL OF SURGERY CASE REPORTS
(2023)
Article
Environmental Sciences
Fatemeh Yousefi, Mohammad Haghighi, Maryam Shabani
Summary: A novel potato-on-rod-like Z-scheme plasmon Ag2CrO4-Ag2Mo2O7 heterojunction nano-photocatalyst was synthesized to degrade organic dyes under artificial sunlight. Characterization analysis confirmed the suitable structure and surface morphology of the photocatalyst, which exhibited remarkable catalytic activity. The catalyst also showed stability and reusability.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Salar Mahboob, Mohammad Haghighi, Maryam Shabani, Amir Haghighi
Summary: This study investigates the sono-photodegradation of methylene blue using plasma-treated Fe2O3-ZnO/rGO as a photocatalyst. The plasma treatment enhances the contact area between nanoparticles and rGO sheets, leading to improved degradation performance. The plasma-treated Fe2O3-ZnO/rGO also exhibits good reusability, making it a promising catalyst for wastewater treatment.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Environmental
Ali Mohammadi, Mohammad Haghighi, Maryam Shabani
Summary: A novel mesoporous nanosheet Z-scheme NCQDs-BNiO/Bi7O9I3 heterojunction nanophotocatalyst has been synthesized by the facile sonosolvothermal method and demonstrated its efficient removal of antibiotic/fluoroquinolones and solid/liquid phase photocatalytic reduction of CO2 under simulated solar light. The synthesized photocatalysts exhibit increased structural defects, enhanced optical absorption and excellent pharmaceutical pollutant removal efficiency, attributed to the efficient surface reactions, mass transfer facilitation and surface adsorption, as well as the utilization of ultrasound waves. The quintessential photocatalyst shows significant photoreduction activity in producing methanol.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Physical
Seddigheh Kohansal, Mohammad Haghighi, Maryam Shabani, Niloufar Mohseni
Summary: The study presents the fabrication of Z-scheme heterojunction sheet-like photocatalysts for environmental pollution control. By adjusting the fuel to oxidizer ratio, the physicochemical properties of the photocatalysts were optimized. The heterojunction nanosheets showed superior performance in removing aqueous tetracycline-HCl under solar light irradiation, attributed to the improved light harvesting, charge separation and transfer, as well as the increased pore volume and specific surface area.
SURFACES AND INTERFACES
(2023)
Article
Green & Sustainable Science & Technology
A. Niyati, M. Haghighi, M. Shabani
Summary: Novel plasmonic Ag-Bi4O5I2/carbonaceous nanocomposites were prepared and used for the photo-decomposition of fluoroquinolone antibiotics. The carbonaceous materials significantly increased the specific surface area and pore size of Bi4O5I2, resulting in remarkable activity for degradation. The Ag-Bi4O5I2/rGO nano photocatalyst showed excellent stability and high reusability.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Green & Sustainable Science & Technology
E. Abbasi, M. Haghighi, M. Shabani, A. Niyati, S. Mahboob
Summary: This study investigates the sonophotocatalytic degradation of organic pollutants over double Z-scheme plasmonic ZnO-Cu-CuO hybridized two-dimensional C3N4. It is found that the ZnO-Cu-CuO/C3N4 catalyst synthesized using ultrasound waves exhibits good catalytic properties, and increasing sonication power reduces the intensity of plasmonic Cu particles and increases the mesopore volume, facilitating the penetration of pollutants.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Engineering, Environmental
Leila Yosefi, Mohammad Haghighi, Mahin Maleki
Summary: In this study, p-n type BixOyIz/ZnFe2O4 nanoheterojunction was prepared using a two-step solvothermal-precipitation route in different solvents. The influence of solvent on the physicochemical and optical properties of the samples was investigated. The results showed that samples mediated by ethanol exhibited superior performance compared to those mediated by ethylene glycol, methanol, and water. This can be attributed to the band position of the nanophotocatalysts, with Bi7O9I3/ZnFe2O4 and BiOI/ZnFe2O4 exhibiting type I and type II heterojunction structures, respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Maryam Abdinejad, Keith Tang, Caitlin Dao, Saeed Saedy, Tom Burdyny
Summary: The increasing level of carbon dioxide in the atmosphere poses both a threat and an opportunity. Utilizing the abundant resource of CO2 through electrochemical CO2 reduction reactions driven by renewable electricity shows great potential, but the design of electrocatalysts needs to be improved to make it economically viable. This review focuses on recent developments in porphyrin-based electrocatalysts for CO2 capture and conversion, discussing the necessary chemical modifications for different immobilization strategies and how they affect catalytic properties. Porphyrin-based catalysts, known for their stability and tunability, hold promise in this field.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)