Article
Green & Sustainable Science & Technology
Wenhe Yu, Baogui Zheng, Kui Mao, Jiacheng Jiang, Bingcheng Luo, Xiaowen Wu, Tianyi Tao, Xin Min, Ruiyu Mi, Zhaohui Huang, Yan-gai Liu, Minghao Fang, Zilong Zhao
Summary: In this study, chitin-modified and graphene oxide bridged TiO2/carbon fibers catalyst was synthesized and found to exhibit high adsorption and photodegradation ability, showing significant potential for sewage treatment applications.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Afzal Ansari, Vasi Uddin Siddiqui, Wahid Ul Rehman, Md. Khursheed Akram, Weqar Ahmad Siddiqi, Abeer M. Alosaimi, Mahmoud A. Hussein, Mohd Rafatullah
Summary: This study presents an innovative technique for fabricating titania nanoparticles using Acorus calamus leaf extract as a new biogenic source. The synthesized nanoparticles exhibited strong photocatalytic activity and antimicrobial efficacy. The results provide valuable insights into the potential application of biogenic titania nanoparticles in various fields.
Article
Chemistry, Multidisciplinary
Purnesh Chattopadhyay, Maria Camila Ariza-Tarazona, Erika Iveth Cedillo-Gonzalez, Cristina Siligardi, Juliane Simmchen
Summary: Microplastics pose a significant environmental threat, compounded by the lack of efficient removal techniques. Photocatalytic semiconducting nanoparticles show promise in degrading micropollutants, including microplastics. This study presents a novel approach by integrating self-propulsion, phoretic assembly, and photocatalytic oxidation into a single Pac-Man TiO2 micromotor, allowing for active collection and degradation of microplastics. The experiments focus on polystyrene microspheres as model microplastics, correlating degradation with catalytic activity and evaluating timescales for the involved processes.
Article
Chemistry, Inorganic & Nuclear
Ntakadzeni Madima, Kebede K. Kefeni, Shivani B. Mishra, Ajay K. Mishra, Alex T. Kuvarega
Summary: This study successfully synthesized magnetic Fe3O4/TiO2 nanocomposites as efficient and recyclable photocatalysts for degrading rhodamine B pollutants under simulated solar light. By optimizing factors such as Fe3O4 loading, photocatalyst properties, and reuse cycles, the photocatalytic activity and stability were improved.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Renlan Liu, Min Zhao, Xiangyong Zheng, Qi Wang, Xianfeng Huang, Yi Shen, Baoliang Chen
Summary: A novel rGO-TiO2(B) composite membrane was constructed by UV-light-assisted self-assembly of reduced graphene oxide and monoclinic crystalline titanium dioxide on a nylon membrane, exhibiting outstanding photocatalytic activity and excellent methylene blue removal rate. The synergistic effect of rGO and TiO2(B) facilitated the photocatalytic degradation of methylene blue.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Neradabilli Prabhakarrao, Tirukkovalluri Siva Rao, Kapuganti Venkata Divya Lakshmi, Gorli Divya, Genji Jaishree, Imandi Manga Raju, Shaik Abdul Alim
Summary: The study synthesized Nb doped TiO2/rGO nanocomposites via sol-gel route at lower temperature with different loading amounts of GO, characterized the materials using various instruments, and examined their photocatalytic performance under visible light irradiation. Results showed that the nanocomposite with 5wt% of GO content achieved the highest degradation efficiency for RhB dye. The unique properties of GO in the nanocomposite help enhance photocatalytic activity by reducing charge carrier recombination rate.
SUSTAINABLE ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Shujian Liu, Yanqing Ge, Chi Wang, Kai Li, Yi Mei
Summary: A multi-heterojunction photocatalyst, TiO2/BP/CN, was developed to enhance the photocatalytic activity of g-C3N4. The presence of TiO2 nanoparticles reduced layer re-stacking and increased specific surface area, providing more reactive sites. The optimized TiO2/BP/CN composite demonstrated significantly higher photocatalytic efficiency for Rhodamine B degradation compared to individual components.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Sidra Bibi, Awais Ahmad, Mohsin Ali Raza Anjum, Abdul Haleem, Muhammad Siddiq, Syed Sakhawat Shah, Abdullah Al Kahtani
Summary: The reduced graphene oxide-based iron oxide modified titania composite exhibited excellent photocatalytic performance for the degradation of malachite green and methylene blue under visible light, showing great potential for visible light-driven photocatalytic degradation processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Martina Kocijan, Lidija Curkovic, Davor Ljubas, Katarina Muzina, Ivana Bacic, Tina Radosevic, Matejka Podlogar, Igor Bdikin, Gonzalo Otero-Irurueta, Maria J. Hortiguela, Gil Goncalves
Summary: This study proposes a novel method for developing TiO2/rGO nanocomposites for photocatalytic dye degradation. The results show that TiO2@rGO nanocomposites with higher rGO content exhibit improved performance in degrading RhB and MB, especially with high degradation rates after exposure to solar-like radiation.
APPLIED SCIENCES-BASEL
(2021)
Article
Green & Sustainable Science & Technology
Dong Xu, Hailing Ma
Summary: In this study, degradation of Rhodamine B in water by ultrasound-assisted TiO2 photocatalysis was investigated, and the optimal degradation conditions were determined by studying various factors. The results suggest that the ultrasound-assisted TiO2 photocatalysis method has great potential application value in the removal of organic pollution and environmental purification.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Crystallography
Manal A. Awad, Meznah M. Alanazi, Awatif A. Hendi, Promy Virk, Albandari W. Alrowaily, Taghreed Bahlool, Fatehia S. Alhakami, Fatma Aouaini, Eiman Mamoun Ibrahim
Summary: This study synthesized environmentally friendly and economically applicable titanium dioxide nanoparticles using green chemistry. The composition of the nanocatalysts was identified using FTIR spectroscopy, and their properties were characterized using various techniques. The synthesized green TiO2 NPs showed significant photocatalytic activity, suggesting their potential application in water purification processes.
Article
Environmental Sciences
Shiva Kumar Arumugasamy, Shanmugam Ramakrishnan, Dong Jin Yoo, Saravanan Govindaraju, Kyusik Yun
Summary: The study involved microwave-assisted alkaline treatment of graphene oxide to create two-dimensional carbonaceous nanocomposites with high photocatalytic degradation and catalytic activity. The synthesized material showed efficient degradation of RhB, significant capacity, and remarkable coulombic efficiency. Furthermore, the composite exhibited low overpotential and Tafel slope in oxygen evolution catalysis, emphasizing its potential for eco-friendly photocatalytic degradability and bifunctional catalytic activity.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
H. S. Sumantha, S. Rajagopal, M. Shashank, G. Nagaraju, Vinayak K. Pattar, Pavithra Shanmugaraj, Sakunthala Ayyasamy, B. L. Suresha
Summary: The trimanganese tetraoxide (Mn3O4) nanoparticles were synthesized by solution combustion method and their relationship with fuel ratio was studied. The results showed that the Mn3O4 nanoparticles exhibited excellent photocatalytic and electrochemical properties, making them suitable for energy storage applications.
Article
Polymer Science
Rahmat Hidayat, Sayekti Wahyuningsih, Ganjar Fadillah, Ari Handono Ramelan
Summary: The TiO2-rGO nanostructures showed improved specific surface area and enhanced photodegradation efficiency under visible light irradiation. Although the stability of the photocatalyst decreased after five cycles, the TiO2-rGO material still demonstrated potential for further photodegradation of organic dyes.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
F. X. Nobre, R. Muniz, E. R. do Nascimento, R. S. Amorim, R. S. Silva, A. Almeida, J. Agostinho Moreira, P. B. Tavares, W. R. Brito, P. R. C. Couceiro, Y. Leyet
Summary: In this study, CaWO4 nanoparticles were synthesized via the hydrothermal method at different temperatures, and their structural, optical properties, and photocatalytic activity were analyzed. The CaWO4-100 nanoparticles exhibited superior photocatalytic performance in Rhodamine B dye solution, attributed to their smaller particle size and high dislocation density. The pH effect was found to promote the best photocatalytic activity in acidic medium (pH = 1) through the direct oxidation of RhB dye molecules by holes and superoxide radicals.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Shady M. EL-Dafrawy, Shawky M. Hassan, Mervat Farag
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Chemistry, Physical
Amr Awad Ibrahim, Andrew Lin, Mina Shawky Adly, M. Samy El-Shall
JOURNAL OF CATALYSIS
(2020)
Article
Biochemical Research Methods
Norhan Elassy, Shady El-Dafrawy, Amira O. Abd El-Azim, Om Ali Y. El-Khawaga, Amr Negm
IET NANOBIOTECHNOLOGY
(2020)
Review
Chemistry, Multidisciplinary
Mohamed Fathi Sanad, Ahmed Esmail Shalan, Sameh O. Abdellatif, Esraa Samy Abu Serea, Mina Shawky Adly, Md. Ariful Ahsan
TOPICS IN CURRENT CHEMISTRY
(2020)
Article
Chemistry, Analytical
Hany M. Youssef, Sh. M. El-Dafrawy, Eman A. Badran, Mohamed M. El-Defrawy
Summary: The study demonstrated that SHMP-OP, prepared by treating olive pomace with sodium hexametaphosphate, is an effective, eco-friendly, and low-cost biomaterial for the removal of crystal violet from aqueous solutions. The experimental results showed that under certain conditions, SHMP-OP exhibited good adsorption capacity for crystal violet and could be reused through acid desorption for multiple cycles.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Elsayed T. Helmy, Ahmed El Nemr, Esam Arafa, Shady Eldafrawy, Mahmoud Mousa
Summary: The study synthesized pure and non-metal-doped TiO2 nanoparticles photocatalysts using a green method and characterized their properties. The non-metal doping significantly enhanced the visible light photocatalytic activity of the materials and demonstrated excellent recyclability.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mohamed Fathi Sanad, Alain R. Puente Santiago, Sarah A. Tolba, Md Ariful Ahsan, Olivia Fernandez-Delgado, Mina Shawky Adly, Elhussein M. Hashem, Mohamed Mahrous Abodouh, M. Samy El-Shall, Sreeprasad T. Sreenivasan, Nageh K. Allam, Luis Echegoyen
Summary: A novel nonprecious Co-Cu bimetallic metal-organic framework (MOF) catalyst was reported, which exhibited superior electrocatalytic activity for ORR in alkaline environments compared to Pt/C, along with higher electrochemical stability and better performance. This outstanding behavior was attributed to the unique electronic synergy of the Co-Cu bimetallic centers in the MOF network, as revealed by XPS and PDOS analysis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Amr A. Ibrahim, Reda S. Salama, Sohier A. El-Hakam, Abdelrahman S. Khder, Awad I. Ahmed
Summary: Zirconia-based mesoporous MCM-41 loaded with varying amounts of sulfate were successfully prepared and characterized using various methods. The increase in sulfate content led to an increase in lattice cell parameter and the samples exhibited a large surface area with uniform pore diameter distribution. The materials showed good catalytic activity and high adsorption capacity for methylene blue.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Multidisciplinary Sciences
Shady M. EL-Dafrawy, Mahmoud Tarek, Salem Samra, Shawky M. Hassan
Summary: A series of ZnO and ZnO/PVA catalysts were prepared using sol-gel method, with ZnO/5PVA showing the highest activity in decomposing methylene blue and ZnO/7PVA being the most active catalyst in decomposing methyl orange. Furthermore, ZnO/5PVA exhibited the best performance in lowering the glucose level in diabetic rats among the tested catalysts.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Amr A. Ibrahim, Shaimaa L. Ali, Mina Shawky Adly, S. A. El-Hakam, S. E. Samra, Awad I. Ahmed
Summary: Improvements in engineering and synthetic chemistry are urgently needed, either using eco-friendly starting materials or designing novel synthesis routes; PWA/Sr-MOF was synthesized and studied for its dye removal and catalytic activities, considering various factors; Experimental results showed that PWA/Sr-MOF can achieve a high adsorption rate of 99.9% for crystal violet dye and exhibit good catalytic activity.
Article
Chemistry, Multidisciplinary
Mina Shawky Adly, S. M. El-Dafrawy, Amr A. Ibrahim, S. A. El-Hakam, M. Samy El-Shall
Summary: A highly porous adsorbent based on a metal-organic framework was designed and applied for heavy metal removal. The adsorbent showed high affinity for mercury ions and effectively removed other heavy metals as well. The experimental data matched well with Langmuir adsorption isotherm and pseudo-second order kinetics models.
Article
Chemistry, Multidisciplinary
Mahmoud M. Kaid, Ahmed Gebreil, Soheir A. El-Hakam, Awad. I. Ahmed, Amr Awad Ibrahim
Article
Materials Science, Multidisciplinary
Shady M. El-Dafrawy, Reda S. Salama, Sohier A. El-Hakam, Salem E. Samra
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)