Article
Materials Science, Multidisciplinary
L. Anju Chanu, K. Jugeshwar Singh, K. Nomita Devi
Summary: Gd-doped ZnO with rich oxygen vacancy defects was synthesized and confirmed to have a hexagonal wurtzite structure. The doped samples showed a mixed morphology of spindle and spherical particles. The optimized Gd0.06Zn0.94O exhibited the best photocatalytic activity for dye degradation, reaching 99% within 10 minutes of irradiation.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Biao Yu, Simin Zhang, Xun Wang
Summary: The researchers developed a facile method to synthesize helical microporous nanorods with enhanced catalytic properties, showing promising prospects for future applications in photocatalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Green & Sustainable Science & Technology
Farzaneh Moradnia, Saeid Taghavi Fardood, Ali Ramazani, Bong-ki Min, Sang Woo Joo, Rajender S. Varma
Summary: Water pollution is a global concern that leads to deaths annually due to diseases from contaminated water. This study presents a green approach for wastewater treatment using magnetic nanoparticles with enhanced photocatalytic activity, showing promising results in decolorization of dyes.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Multidisciplinary
Natarajan Prabakaran, Paulpandian Muthu Mareeswaran, Poovan Shanmugavelan
Summary: This study successfully enhances the dispersion ability of curcumin in water by incorporating it into the silica shell formed on the surface of iron oxide. The interaction with DNA is investigated to explore its potential applications in living organisms.
Article
Chemistry, Multidisciplinary
Luran Zhang, Xinchen Du, Hongjie Lu, Dandan Gao, Huan Liu, Qilong Lin, Yongze Cao, Jiyang Xie, Wanbiao Hu
Summary: FePt and FePtCu nanoparticles with good dispersion were successfully fabricated using a simple, green, one-step solid-phase reduction method, with the addition of 5% Cu significantly improving the properties of FePt nanoparticles. The highest performance FePtCu nanoparticles were obtained when annealed at 750 degrees Celsius.
Article
Chemistry, Multidisciplinary
Chi Zhang, Yao Wang, Yun Chen, Yatao Wang, Peng Wang, Qiong Wu
Summary: This paper investigates the synthesis of nanocomposites made of two kinds of magnetic nanoparticles using a special Co nanomatrix. The results show that embedding Fe3O4 nanoparticles into the branches of C-O clusters allows for close contact between the two types of particles and ensures optimal electromagnetic and magnetic properties.
Article
Chemistry, Multidisciplinary
Alexander Omelyanchik, Gaspare Varvaro, Pierfrancesco Maltoni, Valeria Rodionova, Jean-Pierre Miranda Murillo, Federico Locardi, Maurizio Ferretti, Claudio Sangregorio, Fabio Canepa, Petr Chernavsky, Nikolai Perov, Davide Peddis
Summary: Metallic nanoparticles with high magnetization values were synthesized using a sol-gel autocombustion method and then reduced using hydrogen to obtain high-moment FeCo metal nanoparticles. The FeCo nanoparticles exhibited larger crystallite sizes and magnetization than expected, possibly due to the incorporation of residual carbon atoms from the oxide particles in the body-centered cubic FeCo structure. Furthermore, the effect of an external magnetic field on the reduction process was investigated.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Chemical
Iu A. Bakhteeva, I. Medvedeva, S. Zhakov, I. Byzov, M. S. Filinkova, M. A. Uimin, A. M. Murzakaev
Summary: The study investigates the dynamics of magnetic separation of TiO2 nanoparticles in water by adding composite magnetic Fe-C-COOH nanoparticles and subsequent magnetic sedimentation or filtration. The results show that the separation efficiency is highest at pH 6, and magnetic filtration is more efficient than magnetic sedimentation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
R. Mithun Prakash, C. Ningaraju, K. Gayathri, Y. N. Teja, M. Aslam Manthrammel, Mohd. Shkir, S. AlFaify, M. Sakar
Summary: This paper reports a solution auto-combustion (AC) process for the rapid synthesis of Fe3O4 nanoparticles derived from the sol-gel (SG) process. By using citric acid (CA) and tartaric acid (TA) as gelling agents in the SG process, citric acid acts as a fuel that combusts the gel and yields highly magnetic crystalline Fe3O4 nanoparticles in one step. In contrast, different concentrations of citric acid and any concentrations of tartaric acid do not induce combustion and only result in amorphous iron oxides. Upon annealing, the CA and TA derived iron oxide samples transform into crystalline alpha-Fe2O3 particles. Photocatalytic studies show that the synthesized Fe3O4 nanoparticles exhibit higher photocatalytic efficiency and stability under simulated solar light irradiation.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Muhammad Hamza, Ataf Ali Altaf, Samia Kausar, Shahzad Murtaza, Amen Shahpal, Muhammad Hamayun, Muhammad Tayyab, Komal Rizwan, Hamza Shoukat, Anum Maqsood
Summary: This work investigates the photocatalytic degradation of alizarin red using Cu-doped manganese oxide nanomaterials as catalysts under UV light irradiation. The synthesized nanoparticles, with Cu-doped manganese oxide as the catalyst, exhibited high efficiency in the degradation of alizarin red, with MH20 showing the highest degradation rate. The results indicate the potential of Cu-doped manganese oxides as effective catalysts for the removal of alizarin red.
Article
Chemistry, Physical
Mayifei Rong, Xiaoguang Xu, Kai Wang, Liying Lu, Yihua Bai, Yuping Tian, Zhaopeng Hou, Ruitao Zhao, Yingli Ma, Yong Jiang
Summary: A novel hollow porous microsphere composed of hydroxyapatite (HAp) with uniformly embedded Fe3O4 nanoparticles was developed. The microsphere had a specific surface area of 98.6 m2/g and an average pore size of 11.4 nm. It demonstrated high-efficiency absorption of copper ions. Due to the superparamagnetic property of Fe3O4 nanoparticles, the microspheres could be easily dispersed in water and separated by magnetic force. Therefore, the HAp-Fe3O4 hollow microsphere showed great potential in copper ion treatment.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
M. Vaccari, M. Cremona, D. Orsi, V. Lorusso, A. Baraldi, A. Bosio, D. Pontiroli, L. Liggieri, F. Ravera, E. Santini, L. Cristofolini
Summary: This study synthesized stable solid foam materials and enhanced photocatalytic oxidation activity using nanoparticles. The research provides a new approach for the development of efficient air and water purification systems.
CATALYSIS COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Ahmed M. El-Khawaga, Mohamed A. Elsayed, Yosri A. Fahim, Rasha E. Shalaby
Summary: In this study, CoFe2O4 nanoparticles were prepared and coated with Capsaicin. The characteristics of the modified nanoparticles were examined. The antimicrobial potential and photocatalytic degradation abilities were investigated using Fuchsine basic. Results showed that the coated nanoparticles displayed higher antimicrobial activity against Gram-positive bacteria and exhibited efficient photocatalytic degradation of Fuchsine basic at pH 9.0.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Ganesh Koyyada, Burragoni Sravanthi Goud, Kamakshaiah Charyulu Devarayapalli, Jaesool Shim, S. V. Prabhakar Vattikuti, Jae Hong Kim
Summary: In this study, mixed-phase BiFeO3/Fe2O3 (BF-M) nanocomposite was successfully prepared and characterized. The performance of the BF-M catalyst was evaluated in photoelectrochemical water oxidation and photocatalytic dye degradation analysis. The results showed that the BF-M photocatalyst exhibited higher degradation efficiency and photocurrent density compared to the partials Fe2O3 with BiFeO3 (BF-P), which is attributed to the formation of a mixed-phase nano structure interface.
Article
Nanoscience & Nanotechnology
Ahmed E. ElMetwally, Mostafa Saad Sayed, Jae-Jin Shim, Marc R. Knecht, Leonidas G. Bachas
Summary: In this study, plasmonic Au nanoparticles were used to enhance the photocatalytic activity of BiVO4/BiOBr nanosheets through surface plasmonic resonance. The highest conversion of benzyl alcohol (100%) and the maximum yield of benzaldehyde (99%) were achieved using BiVO4/BiOBr/Au 3% after 4 hours of irradiation. Singlet oxygen was identified as the dominant species responsible for the photocatalytic oxidation of benzyl alcohol to benzaldehyde. The proposed mechanism involved the excitation of electrons in BiVO4/BiOBr/Au to singlet states, which eventually produced triplet excitons and reacted with dissolved O2 to generate singlet oxygen. The thermodynamic analysis indicated that the reaction was favorable.
ACS APPLIED NANO MATERIALS
(2023)
