Article
Engineering, Chemical
Adam Kubiak, Sonia Zoltowska, Elzbieta Gabala, Miroslaw Szybowicz, Katarzyna Siwinska-Ciesielczyk, Teofil Jesionowski
Summary: A fast microwave-assisted method was used to grow zinc oxide under different pH conditions, resulting in materials with varying crystallinity, morphology, and thermal stability. The obtained zinc oxide materials showed good photodegradation and mineralisation efficiency of the model organic pollutant, 4-chlorophenol, in the UV light range. The kinetics of the photocatalytic degradation of 4-chlorophenol were determined based on a pseudo-first-order model, assuming the Langmuir-Hinshelwood mechanism.
Article
Chemistry, Analytical
Artem Chizhov, Pavel Kutukov, Alexander Gulin, Artyom Astafiev, Marina Rumyantseva
Summary: Zinc oxide is an important photocatalyst with potential applications in gas sensing, purification, and synthesis. However, its performance depends on factors such as morphology, impurity composition, and defect structure. This paper presents a method to synthesize highly active nanocrystalline ZnO using commercial ZnO micropowder and ammonium bicarbonate. The synthesized ZnO powder has a mesoporous structure and exhibits certain optical and photoluminescence properties.
Article
Materials Science, Multidisciplinary
Basim Al Farsi, Faisal Al Marzouqi, Mohammed Al-Maashani, Mohammed T. Souier, Myo Tay Zar Myint, Mohammed Z. Al-Abri
Summary: A rapid microwave-assisted process was used to synthesize quasi-aligned Al-doped ZnO nanorods on a glass substrate. The crystal structure, morphology, and optical properties were investigated, with significant changes in morphology and optical properties observed with Al doping, especially at 1% concentration. The photocatalytic degradation of phenol was enhanced by Al-doping due to bandgap narrowing and enhancement of visible light absorption, particularly at 1% Al concentration.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhen Li, Lili Sun, Jie Zhang, Shaokun Tang
Summary: In this study, zinc oxide was synthesized using an ionic liquid and a supramolecular gel as co-templates. The effects of template dosage and aging time on the properties of zinc oxide were investigated. The results showed that the ionic liquid and gel can control the growth orientation and morphology of the crystals, and the synthesized nanosheet-shaped zinc oxide sample exhibited excellent catalytic performance.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Halima Al-Hasani, Jamal Al-Sabahi, Buthayna Al-Ghafri, Rashid Al-Hajri, Mohammed Al-Abri
Summary: This study investigates the feasibility of using photocatalysis with zinc oxide nanorods as a catalyst to degrade phenol in synthetic water. The results show that the nanorods are an effective photocatalyst for phenol degradation under visible light irradiation. The study also examines the effects of different factors such as pH, salinity, cations, and anions on the degradation process.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Agricultural Engineering
Yu Yin, Chunhui Ma, Wei Li, Sha Luo, Yushan Liu, Xueyun Wu, Zhenwei Wu, Shouxin Liu
Summary: The study demonstrated the efficient conversion of glucose to 5-HMF in ionic liquids with MoCl3 as catalyst under microwave irradiation, with the ionic liquid [BMIM]Cl proving to be the best solvent. Microwave irradiation not only reduced the reaction time and improved the yield of 5-HMF compared to traditional oil-bath heating, but also accelerated the bond breaking processes in the reaction.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Biotechnology & Applied Microbiology
Rania Elshypany, Hanaa Selim, K. Zakaria, Ahmed H. Moustafa, Sadeek A. Sadeek, S. Sharaa, Patrice Raynaud, Amr A. Nada
Summary: Fe3O4/ZnO nanocomposites were synthesized by the solid-state method using different ratios of zinc oxide and iron oxide. The nanocomposites exhibited significant Raman shifts and quenching in PL intensity due to the strong incorporation of ZnO with Fe3O4. The photocatalytic activities of the nanocomposites showed enhanced degradation efficiency of methylene blue under visible light, with a stable catalytic performance over multiple cycles.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Materials Science, Multidisciplinary
Yarden Melamed, Nabasmita Maity, Louisa Meshi, Noam Eliaz
Summary: Electrodeposition of pure aluminum on copper and nickel substrates from an ionic liquid at room temperature was successfully achieved, resulting in dense and homogeneous aluminum deposits with nanocrystalline structure. The process exhibited a quasi-reversible reaction with current affected by both charge transfer and mass transport. Additionally, the deposition rate and grain size could be significantly improved by adjusting the applied cathodic potential.
Article
Chemistry, Physical
Hansaem Jang, Jeon Ryang Lee, Su Jin Kim, Hyejeong Jeong, Sungkwan Jung, Jeong-Hyeon Lee, Jae-Cheol Park, Tae-Won Kim
Summary: The study investigates the mechanism of synthesizing nanoparticles by the combination of microwave irradiation and ionic liquids, revealing that microwave heating under specific conditions can lead to localized decomposition of ionic liquids and subsequently affect the particle aggregation behavior.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yufeng Wang, Greg M. Swain, G. J. Blanchard
Summary: This study reports on the surface charge-induced free charge density gradient and refractive index gradient in room-temperature ionic liquids (RTILs), as well as the relationship between the two. It demonstrates a modulation of refractive index of approximately 15% proportional to the surface charge density, providing new insights into the utility of RTILs for electro-optic applications.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Chemistry, Multidisciplinary
Alvaro Perez-Molina, Luisa M. Pastrana-Martinez, Lorena T. Perez-Poyatos, Sergio Morales-Torres, Francisco J. Maldonado-Hodar
Summary: Graphitic carbon nitride (g-C3N4) was utilized to enhance the photocatalytic activity of ZnO nanoparticles for the degradation of 5-fluorouracil (5-FU) cytostatic drug. CN/ZnO composites were synthesized with varied g-C3N4 loading through a thermal method, resulting in improved mesoporosity, light absorption ability, and aromaticity. The highest activity was achieved with CN/ZnO composite containing 25 wt% of g-C3N4 (CN25/ZnO), exhibiting complete degradation of 5-FU, mineralization of 48% after 180 min, and good photostability during reuse cycles. Reactive oxygen species (ROS), including radicals and non-radical species, were identified as the main active species responsible for 5-FU degradation. A photocatalytic mechanism for CN/ZnO composites was also proposed.
Article
Chemistry, Physical
T. Hirade, K. Michishio, Y. Kobayashi, N. Oshima
Summary: In this study, the temperature dependence of the triplet positronium (ortho-Ps) lifetime in N,N,N-Trimethyl-N-propylammonium bis(trifluoromethanesulfonyl)imide (TMPA-TFSI) was investigated. The results showed that at 150℃, there was a difference in the ortho-Ps lifetime between the near-surface and bulk regions, indicating the presence of a molecular oriented structure on the surface. The ortho-Ps lifetimes became shorter as the temperature increased in both the near-surface and bulk regions, except for water.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Dong Ding, Kangcheng Sun, Xiaohan Chen, Chao Wang, Dongfeng Diao
Summary: In this study, a graphene nanocrystalline film device with electrically tunable magnetoresistance behavior at room temperature is designed, and a nonlinear S-shaped I-V curve is observed. By adjusting the grain size of the graphene nanocrystalline, a high linear magnetoresistance is achieved with a large switching ability. The electrically tunable linear magnetoresistance at room temperature in this device has intriguing prospects for low-powerconsumption sensitive logic and magnetic random-access memory devices.
Article
Chemistry, Physical
Thi-Na Ta, Shin-Yuh Chern, Jeng-Haur Horng
Summary: The study found that copper oxide and zinc oxide nanoparticles can enhance the friction reduction ability of the ionic liquid lubricant, with zinc oxide reducing wear and copper oxide decreasing anti-wear characteristics. The best tribological performance was observed with 0.2 wt% zinc oxide concentration, reducing wear scar diameter by 32% compared to the pure ionic liquid.
Article
Chemistry, Organic
Nikoletta Harsagi, Nora Zsuzsa Kiss, Laszlo Drahos, Gyorgy Keglevich
Summary: A series of phospholane oxides were prepared in good yields by microwave-assisted catalysis, providing an alternative method to esterifications starting from phosphinic chlorides and acids. Microwave irradiation played a crucial role in the alcoholyses studied.
SYNTHESIS-STUTTGART
(2022)
Article
Biochemistry & Molecular Biology
Hamid Dezhampanah, Masoomeh Esmaili, Leila Hasani
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2018)
Article
Chemistry, Physical
M. Esmaili, A. Habibi-Yangjeh
JOURNAL OF ALLOYS AND COMPOUNDS
(2010)
Article
Materials Science, Multidisciplinary
M. Esmaili, A. Habibi-Yangjeh
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2009)
Article
Biotechnology & Applied Microbiology
H. Dezhampanah, M. Esmaili, A. Akbarnia Dafrazi, P. Mehdizadeh
BIOTECHNIC & HISTOCHEMISTRY
(2019)
Article
Biochemistry & Molecular Biology
Hamid Dezhampanah, Masoomeh Esmaili, Shabnam Jampour
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2020)
Article
Biochemistry & Molecular Biology
Masoomeh Esmaili, Hamid Dezhampanah, Mahvash Hadavi
Summary: This study demonstrates the enhancement of biocompatibility of superparamagnetic iron oxide nanoparticles (SPIONs) by coating with different materials and binding drugs on their surface for targeted drug delivery system.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2021)
Article
Chemistry, Applied
M. Esmaili, A. Habibi-Yangjeh
CHINESE JOURNAL OF CATALYSIS
(2011)
