Article
Materials Science, Multidisciplinary
Duygu Akyuz
Summary: Metal oxides are commonly used catalysts for removing dyes and toxins. The synthesized catalyst showed excellent degradation rate and efficiency, as well as high photocurrent density, stability, and recyclability under UV light irradiation.
Article
Chemistry, Physical
Thieu Quang Quoc Viet, Vu Hoang Khoi, Nguyen Thi Huong Giang, Hoang Thi Van Anh, Nguyen Minh Dat, Mai Thanh Phong, Nguyen Huu Hieu
Summary: Zinc oxide and titanium dioxide co-doped reduced graphene was synthesized for effective treatment of methylene blue solution. The optimal conditions resulted in a high efficiency of MB treatment and significant potential for dye treatment in industrial effluent. The synthesized materials followed pseudo-second-order kinetics for MB adsorption and pseudo-first-order kinetics for MB photocatalytic degradation process.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Adeyinka S. Yusuff, Kudirat A. Thompson-Yusuff, Olalekan D. Adeniyi, Moses A. Olutoye
Summary: In this study, immobilized TiO2 on termite hill (TiO2/TH) and ZnO-promoted TiO2/TH (ZnO-TiO2/TH) were synthesized and evaluated as photocatalysts for methylene blue (MB) degradation under solar irradiation. The ZnO-TiO2/TH showed better photoactivity and stability, indicating its potential for the degradation of organic pollutants in industrial wastewater.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Devaraj Bharathi, Jaya Ganesh Thiruvengadam Nandagopal, Ranjithkumar Rajamani, Soumya Pandit, Deepak Kumar, Bhasker Pant, Sadanand Pandey, Piyush Kumar Gupta
Summary: In this study, zinc oxide nanorods were synthesized using leaf extract of Solanum trilobactum plant. The physicochemical properties of the nanorods were characterized and their photocatalytic property against methylene blue dye was investigated under sunlight irradiation. The nanorods showed high dye degradation efficiency and stability, making them suitable for reuse.
Article
Chemistry, Inorganic & Nuclear
F. Aqui-Romero, I. Santos-Sauceda, R. Ramirez-Bon
Summary: In this study, we successfully synthesized polyvinyl alcohol-Zn acetate fibers on glass substrates using the electrospinning technique, which were then converted into crystalline ZnO nanofiber thin films through calcination. The thin films exhibited a homogeneous and porous fiber morphology with good adhesion to the substrate. Analysis using SEM, XRD, and TGA confirmed the properties of the ZnO nanofiber thin films. Furthermore, the thin films demonstrated high photodegradation efficiency towards methylene blue (MB) solutions under sunlight, achieving a degradation percentage of 96.4%. The photocatalytic thin films remained intact and well adhered to the substrate after the photodegradation experiments, allowing for multiple reuse in subsequent experiments.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
C. A. Soto-Robles, O. Nava, L. Cornejo, E. Lugo-Medina, A. R. Vilchis-Nestor, A. Castro-Beltran, P. A. Luque
Summary: The paper presents a green route method for synthesizing ZnO nanoparticles using plant extract, characterized the samples, confirmed their formation, and demonstrated high degradation efficiency in photocatalysis.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Optics
Geetha Kathiresan, Kavithayeni Vijayakumar, Akash Prabhu Sundarrajan, Hyun-Seok Kim, Kathalingam Adaikalam
Summary: The study on photocatalytic remediation for industrial wastewater purification found that zinc oxide, graphene oxide, and polyvinyl alcohol polymer nanoparticles showed good degradation efficiency on dyes, with graphene oxide performing the best on all three dyes tested. The nanoparticles were characterized using XRD, SEM, FTIR, and UV-vis spectroscopy, and the photocatalytic degradation efficiency was examined for 7 h and 24 h using UV and FTIR spectroscopies.
Article
Polymer Science
Yangyang Xie, Xiao-Feng Sun, Wenbo Li, Junhui He, Ran Sun, Sihai Hu, Yaoguo Wu
Summary: In this study, xylan-g-PMMA was synthesized and used for electrospinning nanofibers for the first time. The electrospinning parameters were optimized to obtain fibers with desired morphology. The dispersion of TiO2 nanoparticles in the nanofibers showed great potential for water treatment.
Article
Environmental Sciences
Yanan Wang, Tieliang Zhang, Yujie Zhao, Tong Lv, Wenjing Liu, Xiaowei Liu
Summary: This study reports the use of bacterial cells for the biosynthesis of Au@TiO2 as an efficient catalyst for the degradation of methylene blue. The bio-Au2@TiO2 catalyst showed the highest catalytic activity with a kinetics constant of 0.195 min(-1), and maintained stable activity for up to 10 cycles. The presence of Au nanoparticles on the bio-TiO2 layers decreased the band gap energy of TiO2, leading to the generation of abundant photogeneration hydroxyl radicals and enhanced photocatalytic activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Marlene Andrade-Guel, Christian J. Cabello-Alvarado, Gregorio Cadenas-Pliego, Carlos Alberto Avila-Orta
Summary: In this study, polymeric nanomaterials modified by ultrasound-assisted extrusion were prepared and characterized. The incorporation of nanoparticles increased the crystallinity and thermal stability of the polymer. The nanomaterials also showed high adsorption capacity for methylene blue dye, with good reusability.
Article
Chemistry, Multidisciplinary
Maadri A. Pathirana, Nethmi S. L. Dissanayake, Nandula D. Wanasekara, Boris Mahltig, Gayani K. Nandasiri
Summary: Textile wastewater contains toxic organic contaminants that could harm the ecosystem. Methylene blue and Congo red are two commonly found dyes that need to be removed. This study investigates the use of a chitosan-graphene oxide nanofiber membrane for efficient removal of these dyes. Various characterization techniques were used to analyze the fabricated nanocomposite. The results show that the membrane has a high adsorptive capacity for both methylene blue and Congo red.
Article
Chemistry, Physical
Guoxiang Peng, Ni-Ni Chou, Yu-Shan Lin, Cheng-Fu Yang, Teen-Hang Meen
Summary: This study aimed to compare the degradation effect of ZnO nanorods (NRs) on methylene blue (MB) at different concentrations, grown on Si and indium tin oxide (ITO) substrates. The XRD patterns and SEM observations showed variations in synthesized ZnO NRs when different substrates were used. ZnO NRs synthesized on an ITO substrate exhibited a slower growth rate and had a higher degradation effect on MB (59.5%) compared to those synthesized on a Si substrate (73.7%).
Article
Nanoscience & Nanotechnology
Anna Kulis-Kapuscinska, Monika Kwoka, Michal Adam Borysiewicz, Tomasz Wojciechowski, Nadia Licciardello, Massimo Sgarzi, Gianaurelio Cuniberti
Summary: The photocatalytic degradation of methylene blue (MB) in wastewater using ZnO nanostructured porous thin films was studied. The SEM analysis revealed the presence of a coral reef structure on the surface of the ZnO thin films, which increased in size after the photocatalytic experiments. The XPS analysis showed slight non-stoichiometry and the presence of carboxyl and carbonyl functional groups after the photodegradation of MB.
Article
Chemistry, Physical
Hira Fatima, Muhammad Rizwan Azhar, Mehdi Khiadani, Yijun Zhong, Wei Wang, Chao Su, Zongping Shao
Summary: The development of a near-infrared-responsive photocatalyst Fe3O4@PB@ZnO has successfully addressed the challenge of low-wavelength photon absorption in ZnO-based photocatalysis for wastewater treatment. The enhanced photocatalytic rate of Fe3O4@PB@ZnO is attributed to the presence of PB with low bandgap, which results in sufficient production of reactive oxygen species.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Physical
Shiyang Zhang, Mingwei Cai, Jiahao Wu, Zhi Wang, Xiaochuang Lu, Kaixin Li, Jng Min Lee, Yonggang Min
Summary: TiO2/MXene composites were synthesized and showed enhanced removal efficiency for methylene blue (MB) dye. The removal rate of MB by TiO2/MXene composite materials was 96.44% under ultraviolet light, 29.83% higher than pure TiO2. Under visible light, the removal rate of MB was 8.26 times higher (40.19%) than pure TiO2. This enhancement was attributed to improved charge antirecombination and high adsorption capability toward MB.
CATALYSIS COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Kyeong-Han Na, Wan-Tae Kim, Dong-Cheol Park, Hyun-Gyoo Shin, Sea-Hyun Lee, Jisun Park, Tae-Hyeob Song, Won-Youl Choi
Article
Nanoscience & Nanotechnology
Wan-Tae Kim, Won-Youl Choi
SCIENCE OF ADVANCED MATERIALS
(2018)
Article
Nanoscience & Nanotechnology
Wan-Tae Kim, Tae-Hwan Hwang, Won-Youl Choi
SCIENCE OF ADVANCED MATERIALS
(2018)
Article
Nanoscience & Nanotechnology
Wan-Tae Kim, Won-Youl Choi
JOURNAL OF NANOMATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Wan-Tae Kim, Kyeong-Han Na, Jae-Kwan Lee, Insan Jang, Dong-Soon Choi, Won-Youl Choi
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Chang-Gyu Lee, Kyeong-Han Na, Wan-Tae Kim, Dong-Cheol Park, Wan-Hee Yang, Won-Youl Choi
APPLIED SCIENCES-BASEL
(2019)
Article
Chemistry, Multidisciplinary
Kyeong-Han Na, Wan-Tae Kim, Tae-Hyeob Song, Won-Youl Choi
APPLIED SCIENCES-BASEL
(2019)
Article
Chemistry, Multidisciplinary
Kyeong-Han Na, Wan-Tae Kim, Tae-Hyeob Song, Sung-Wook Kim, Won-Youl Choi
Article
Chemistry, Multidisciplinary
Min-Zy Kim, Syed Fakhar Alam, Devipriyanka Arepalli, Aafaq Ur Rehman, Won-Youl Choi, Churl-Hee Cho
Summary: Zeolite membranes with different thickness intermediate layers were successfully prepared using planetary-milled seeds with various particle sizes. The use of small seeds resulted in enhanced performance and reduced thermal cracking in the zeolite layers.
Article
Chemistry, Multidisciplinary
Wan-Tae Kim, Dong-Cheol Park, Wan-Hee Yang, Churl-Hee Cho, Won-Youl Choi
Summary: TiO2 has excellent properties and is widely used in various fields. This study utilized electrospinning to fabricate PVP/TiO2 nanofibers, where the diameters of the nanofibers were controlled by adjusting different parameters for improving performance.
Article
Chemistry, Multidisciplinary
Wan-Tae Kim, Joo-Won Lee, Hong-Eun An, So-Hye Cho, Sohee Jeong
Summary: This study presents a chemical-free approach to produce an AlOOH adsorbent on aluminum sheets for effective removal of fluoride ions from water. The optimized adsorbent shows high removal efficiency, cost-effectiveness, eco-friendliness, and sustainability, making it a potential solution for engineered water treatment systems.
Article
Dentistry, Oral Surgery & Medicine
Young-Gyo Kim, Wan-Tae Kim, Bo Hyun Jung, Ki-Yeon Yoo, Heung-Sik Um, Beom-Seok Chang, Jae-Kwan Lee, Won-Youl Choi
Summary: The study investigated the effects of ibuprofen-loaded TiO2 nanotube dental implants in alloxan-induced diabetic rabbits. Results showed that the ILTN implants demonstrated better stability and bone-to-implant contact compared to machined implants in the diabetic rabbit model. The ILTN implants also showed similar performance to the commercially used SLA implants in terms of stability and bone area percentage.
JOURNAL OF PERIODONTAL AND IMPLANT SCIENCE
(2021)
Article
Engineering, Biomedical
Insan Jang, Dong-Soon Choi, Jae-Kwan Lee, Wan-Tae Kim, Bong-Kuen Cha, Won-Youl Choi
BIOMEDICAL MICRODEVICES
(2017)