Article
Chemistry, Physical
O. M. Lemine, Nawal Madkhali, Marzook Alshammari, Saja Algessair, Abbasher Gismelseed, Lassad El Mir, Moktar Hjiri, Ali A. Yousif, Kheireddine El-Boubbou
Summary: The study investigated the heating efficiencies of gamma-Fe2O3 and hybrid gamma-Fe2O3-TiO2 nanoparticles under an alternating magnetic field, showing that gamma-Fe2O3 exhibited better heating efficiency potential for magnetic hyperthermia treatment. The results suggest that the fabricated nanocomposites have great potential for various applications, particularly in magnetic photothermal hyperthermia treatments.
Article
Environmental Sciences
S. Ranjan, B. K. Yadav, H. Joshi
Summary: The study successfully developed a composite material loaded on maghemite through the chemical co-precipitation method, showing great potential in removing arsenic from water. The adsorption efficiency was higher at lower pH values, showcasing promising results for the removal of both As(III) and As(V) by the developed composite.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Wenlin Zhao, Bozhi Ren, Andrew Hursthouse, Zhenghua Wang
Summary: The study successfully synthesized magnetic nanoadsorption materials with high adsorption capacity and easy separation, characterized by flower-like gamma-Fe2O3 microspheres composed of petal-shaped nanosheets. The material has strong magnetic response for rapid solid-liquid separation under external magnetic field, showing promising potential for treating polluted wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Applied
Duc Dung Mai, Thi Hue Bui, Van Huan Pham, Thi Hoan Bui, The Kien Pham, Duy Cuong Nguyen, Thi Lan Nguyen
Summary: In this study, a nanocomposite of gamma-Fe2O3 and reduced-graphene oxide (RGO) was successfully synthesized and characterized. The results showed that the nanocomposite exhibited excellent adsorption performance and high removal efficiency for heavy metals, indicating its potential application in borehole water filters.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Svetlana Butulija, Vojislav Spasojevic, Goran Brankovic, Marija Prekajski Dordevic, Tamara Radulovic, Aleksandra Zarubica, Branko Matovic
Summary: Spider silk-maghemite composite with superparamagnetic properties was obtained by a simple and fast co-precipitation method. The thermal stability of the composite was improved by the maghemite nanoparticles, and it holds potential applications in various fields.
Article
Materials Science, Ceramics
Mehmet Saatci, Aylin M. Deliormanli, Harika Atmaca
Summary: In this study, superparamagnetic maghemite-containing bioactive glass powders were prepared for the treatment of osteosarcoma. The results showed that the prepared glass composites have superparamagnetic properties and high bioactivity, with no cytotoxicity against osteosarcoma and pre-osteoblast cells. The drug-loaded glass powder also exhibited sustained release behavior.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Zifan Zhang, Yuan Lin, Qianwen Liu, Xuxu Wang, Xianzhi Fu, Wenyue Su
Summary: Developing high-efficiency photocatalysts for CO2 photoreduction is crucial for addressing energy and pollution issues. The synthesized α-Fe2O3 modified La2Ti2O7 significantly improved the activity and stability for photocatalytic CO2 reduction, with enhanced charge separation efficiency. The optimized composite exhibited excellent CO2 reduction activity, providing novel insights into the design and fabrication of high-performance photocatalysts for solar-to-energy applications.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Johannes Dietrich, Alexius Enke, Nils Wilharm, Robert Konieczny, Andriy Lotnyk, Andre Anders, Stefan G. G. Mayr
Summary: Iron oxide nanoparticles with a mean size of approximately 5 nm were synthesized using energetic electrons to irradiate micro-emulsions containing iron salts. The properties of the nanoparticles were investigated using various techniques, revealing that the formation of superparamagnetic nanoparticles starts at a dose of 50 kGy. The particles tend to form clusters and show increasing crystallinity and yield with increasing doses.
Article
Chemistry, Physical
Tsuyoshi Tokubuchi, Ramis Imran Arbi, Pan Zhenhua, Kenji Katayama, Ayse Turak, Woon Yong Sohn
Summary: By designing a phase junction configuration of alpha and gamma-Fe2O3 in the hematite photo-electrode and using maghemite particles to suppress the phase transition, we significantly improved the current density. The confirmation through Raman spectroscopy of the construction of the alpha/gamma-Fe2O3 phase-junction structure further supports the enhancement of performance.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Q. Yu, S. Zhao, S. Asuha
Summary: In this study, a novel and facile one-step solid-state method for the preparation of gamma-Fe2O3 nanoparticles (NPs) was developed. The addition of aromatic acids to Fe(NO3)(3)•9H(2)O led to the formation of gamma-Fe2O3 NPs and significantly influenced their morphology. The gamma-Fe2O3 NPs obtained from the trimesic acid/Fe(NO3)(3)•9H(2)O system exhibited a porous three-dimensional hierarchical structure and the largest Brunauer-Emmett-Teller surface area.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Minhua Su, Hong Li, Zequan Liu, Hairong Peng, Shuai Huang, Ying Zhou, Changzhong Liao, Gang Song, Diyun Chen
Summary: This study investigated the interaction between U (VI) ions and maghemite particles, and found that maghemite showed excellent selectivity for U (VI) removal, with organic matter promoting the interfacial interaction under acidic conditions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Bing Song, Zejian Zhi, Qiang Zhou, Di Wu, Lei Yu, Feng Gong, Ying Yin, Fanyue Meng, Chengming Li, Zhiliang Chen, Min Song
Summary: This study synthesized a hexagonal Fe-Ce bimetal oxide nanosheets with high catalytic activity to improve the adsorption efficiency of iron oxides for arsenic removal. The experimental results showed that the nanosheets had a high adsorption capacity for arsenic and achieved equilibrium in a short period of time. The study also proposed a new insight into the oxidation and complexation mechanism of arsenic.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Physics, Condensed Matter
Anfal Aldaoud, O. M. Lemine, N. Ihzaz, L. El Mir, Sharif Abu Alrub, Kheireddine El-Boubbou
Summary: We report the preparation, characterization, and heating efficiencies of undoped and Co-doped gamma-Fe2O3 nanoparticles for magnetic hyperthermia applications. The undoped gamma-Fe2O3 nanoparticles showed better heating efficiency compared to Co-doped samples. The results demonstrate the potential of these nanoparticles for magnetic hyperthermia applications.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Metallurgy & Metallurgical Engineering
Mai Duc Dung, Bui Thi Hue, Luong Thi Kim Phuong, Le Thi Giang, Le Viet Bau, Nguyen Thi Lan
Summary: The reduced graphene oxide/maghemite (RGO/gamma-Fe2O3) material with a mesoporous structure was synthesized successfully. The RGO/gamma-Fe2O3 nanocomposite exhibited a high adsorption capacity for arsenic (As(V)) and a mixture of heavy metals (As(V), Cr(VI), Pb(II), and Fe(III)) in water. The maximum adsorption efficiency of As(V) reached 98.9% after 45 minutes, making RGO/gamma-Fe2O3 a promising adsorbent for heavy metal removal.
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Physical
Min Deng, Mingzhu Chi, Mingxin Wei, Aimei Zhu, Lubin Zhong, Qiugen Zhang, Qinglin Liu
Summary: A monodispersed core-shell mesoporous H-Fe3O4@mTiO2 magnetic microspheres adsorbent was prepared for efficient arsenic removal, showing high specific surface area and magnetic susceptibility for easy separation. The adsorbent exhibited high adsorption capacities for both As(V) and As(III), especially showing excellent performance for As(III) removal across a broad pH range. Furthermore, the adsorbent showed excellent stability after 5 regeneration cycles due to its advantageous magnetic inner-core for fast solid-liquid separation without any loss.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
