Article
Chemistry, Multidisciplinary
Hamid Hafizi, Md. Lutfor Rahman, Mohd Sani Sarjadi, Mohammed Salim Akhter, Maurice N. Collins, Emmet J. O'Reilly, Gavin M. Walker, Shaheen M. Sarkar
Summary: A magnetically separable palladium nanocatalyst was synthesized by immobilizing palladium onto 3-aminopropylphenanthroline Schiff based functionalized silica coated superparamagnetic Fe(3)O(4) nanoparticles. The nanocatalyst was characterized using various spectroscopic techniques, confirming the successful functionalization and presence of palladium species. The catalyst showed good reactivity and reusability in Mizoroki-Heck cross-coupling reactions.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Jie Min, Wei Song, Tianding Hu, Yunfei Zhi, Zhenhao Xia, Tiecheng Zhang, Shaoyun Shan, Hongying Su
Summary: A magnetic Co(III)-Salen heterogeneous catalyst with uniform spherical core-shell structure was synthesized for the chemical fixation of CO2. The catalyst exhibited high yield and selectivity in the ring-opening addition reaction under solvent-free reaction conditions, demonstrating its potential in green catalysis.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Rita N. Sales, Carla D. Nunes
Summary: Desulfurization is crucial for eliminating sulfur compounds from fuel feedstocks, and MoO3 nanoparticles synthesized through hydrothermal method have shown to be efficient catalysts for oxidative desulfurization. The catalyst demonstrated enhanced activity and selectivity in the desulfurization process, with temperature and solvent influencing the conversion rate. The catalytic performance of MoO3 nanomaterial was comparable or superior to other catalysts reported in literature.
Article
Chemistry, Applied
Jia Ma, Jiang-Hua Zhang, Hua-Wei Zhang, Qian-Qian Du, Zi-Xuan Li, Zhi-Fei Yang, Sha-Sha Yang, Da-Yong Zhou
Summary: This study developed an innovative method using Fe3O4@SiO2/M (M = Zn or Al) catalysts to synthesize medium-chain structured phospholipid emulsifiers (MCSPLs). The targeted emulsifiers exhibited superior emulsifying properties and had the potential to be used as oil-in-water emulsifiers. This method offers a promising, green, economic, and highly effective approach for the synthesis of novel dual-function phospholipid emulsifiers.
Article
Materials Science, Ceramics
Basir Maleki, Hossein Esmaeili
Summary: Fe3O4/SiO2@ZnO nanocomposite was synthesized as a heterogenous catalyst for biodiesel generation from waste cooking oil. The nanocomposite exhibited a specific surface area of 32.56 m(2) g(-1), mean particle size of 10.46 nm, and pore volume of 0.15 cm(3) g-1. The distribution of Si and Zn elements in the lattice of Fe3O4 nanoparticles was successfully achieved. The nanocatalyst showed a maximum biodiesel yield of 97.23% under optimal conditions and could be efficiently reused for seven cycles with a yield of 88.36%. The Fe3O4/SiO2@ZnO nanocatalyst is a promising catalyst for biodiesel generation from waste cooking oil.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Shaili Pal, Ajay Kumar, Sunil Kumar, Arup Kumar De, Rajiv Prakash, Indrajit Sinha
Summary: This article investigates the visible light photocatalytic effectiveness of starch stabilized Fe3O4/Cu2O nanostructures for photocatalytic degradation of p-nitrophenol (PNP) and methyl orange (MO). The results show that these nanocomposites have excellent photocatalytic properties and recyclability.
Article
Engineering, Environmental
Khairunnisa Khairudin, Noor Fitrah Abu Bakar, Mohamed Syazwan Osman
Summary: This study proposes a promising method of degrading microplastics using a self-propelled and magnetically recovered BiOI-Fe3O4 microswimmer. The results reveal that the microswimmer successfully degrades 64% of microplastics in 120 hours and reduces the concentration of microplastics in an aqueous solution.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Jiang Wu, Kanghui Ke, Ni Qin, Enzhu Lin, Zihan Kang, Dinghua Bao
Summary: In this study, a magnetically retrievable Fe3O4@SiO2@ZnO nanocomposite was successfully synthesized, which consisted of vertically grown ZnO nanorods on the surface of magnetic Fe3O4@SiO2 microspheres. SiO2 served as an insulator to protect the core and inhibit charge transfer. The nanocomposite showed high efficiencies in piezocatalytic, photocatalytic, and piezo-photocatalytic dye degradation processes, with a rate constant of piezo-photocatalysis reaching 95.9 x 10-3 min-1.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Narges Bouzari, Abolfazl Bezaatpour, Behnam Babaei, Mandana Amiri, Rabah Boukherroub, Sabine Szunerits
Summary: This study reports a new type of heterogeneous molybdenum(+6) complex prepared by covalently grafting a complex onto the surface of nanoparticles. The nanocatalyst showed high efficiency, recyclability, and eco-friendly properties in the oxidation reactions of alkenes and sulfides. The synthesized catalyst can be reused multiple times without losing catalytic activity.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Nasrin Abdollahi, Azar Ostovan, Kourosh Rahimi, Mansour Zahedi, Alireza Z. Moshfegh
Summary: Metal-organic frameworks (MOFs) have shown promising potential as photocatalysts for environmental remediation. In this study, TMU-32 MOF exhibited high photocatalytic activity due to its large specific surface area and appropriate band gap energy. Fe3O4@TMU-32 nanocomposite, prepared by combining TMU-32 with Fe3O4 nanoparticles, showed good recyclability and photocatalytic efficiency. This research provides valuable insights for the development of efficient photocatalysts.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Chenyi Yuan, Xiqing Wang, Xuanyu Yang, Abdulaziz A. Alghamdi, Fahad A. Alharthi, Xiaowei Cheng, Yonghui Deng
Summary: Novel sulfonic acid functionalized core-shell Fe3O4@carbon microspheres were designed and synthesized as an efficient and recyclable heterogeneous acid catalyst. These microspheres possess magnetic properties, high saturation magnetization value, uniform core-shell structure, and abundant acid functional groups. They exhibited high selectivity and recyclability in the acetalization reaction, demonstrating promising potential for industrial applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Energy & Fuels
Ashwini John, Melvin S. Samuel, Ethiraj Selvarajan
Summary: This study focuses on converting waste agricultural biomass to bioethanol through enzymatic hydrolysis and saccharification. Cellulase from Aspergillus niger was immobilized in Fe3O4/GO/CS nanocomposites to enhance its stability and efficiency. The immobilized cellulase exhibited high thermal stability and retained activity even after multiple cycles. Wheat bran and rice bran were pretreated and enzymatically hydrolyzed to obtain glucose, which was then fermented to produce ethanol. The study demonstrates the potential of utilizing lignocellulosic biomass for bioethanol production.
Article
Materials Science, Multidisciplinary
Hongzhi Yang, Tianpei He, Yaohui Wu, Jinhua Luo, Aihua Zhang, Xiaoyong Chen, Yelin Zeng, Yonghong Wang, Yunlin Zhao, Guangjun Wang
Summary: A novel PbMoO4@MBC (MBL-2) magnetic heterojunction photocatalyst was prepared, which had a large specific surface area, excellent magnetic response, and high light absorption capacity. It exhibited high photocatalytic activity and stability.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Engineering, Environmental
Hao Sun, Xiaoqing Li, Xiaobing Li
Summary: In this study, a novel PQA-PDA@Fe3O4 nanoparticle demulsifier was developed to efficiently demulsify asphaltene-rich ASP flooding emulsions. The nanoparticles demonstrated excellent demulsification efficiency by coalescing fine oil droplets into large aggregates and inhibiting secondary emulsification. The magnetic properties of the nanoparticles also accelerated the aggregation process and allowed for magnetic recyclability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Organic
Bahareh Babaei, Manouchehr Mamaghani, Masoud Mokhtary
Summary: A novel and green magnetic nanocatalyst was synthesized and used in a three-component coupling reaction, showing significant catalytic activity and recoverability.
POLYCYCLIC AROMATIC COMPOUNDS
(2023)