Article
Materials Science, Ceramics
Marilia R. Oliveira, Juan A. Cecilia, Juliana F. De Conto, Silvia M. Egues, Enrique Rodriguez-Castellon
Summary: It is well-known that there is a constant global search for sustainable technologies that can effectively reduce carbon dioxide (CO2) emissions in order to combat climate change. This study focused on the synthesis of silica-based adsorbents, MCM-41 and SBA-15, using a microwave reactor. The results showed that microwave irradiation greatly improved the properties and adsorption capacity of the silica materials, making them promising candidates for CO2 capture processes.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Yasser H. Gad, Shaimaa M. Nasef
Summary: A high yield of graphene oxide was chemically synthesized from graphite powder using adjusted Hummer's method, and the acidic functional groups in GO were determined using potentiometric titration. Composite hydrogels based on GO/PAMPS/PVA were synthesized with different doses of Co-60 gamma irradiation source. The adsorption of basic blue 3 dye onto the GO/PAMPS/PVA composite hydrogels followed Pseudo-second-order kinetics and fit the Freundlich adsorption isotherm model, with an optimum adsorption capacity of 194.6 mg/g under specific conditions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Julian Lopez-Tinoco, Javier Lara-Romero, Ricardo Rangel, Jose Apolinar-Cortes, Francisco Paraguay-Delgado, Sergio Jimenez-Sandoval, Lourdes Bazan-Diaz, Ruben Mendoza-Cruz
Summary: Ceria nanoparticles supported on multiwalled carbon nanotubes were synthesized successfully and showed great potential in removing organic dyes from contaminated water. The composites exhibited higher dye adsorption capability and removal percentage compared to functionalized carbon nanotubes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Multidisciplinary Sciences
Nor Syazwani Abdullah Sani, Wei Lun Ang, Abdul Wahab Mohammad, Alireza Nouri, Ebrahim Mahmoudi
Summary: This study synthesized a graphene sand composite (GSC) adsorbent using waste cooking oil (WCO) as a carbon source through the thermal graphitization method. The GSC(WCO) showed high efficiency in removing Congo Red dye and has great potential for water treatment.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Chemical
Kehinde Shola Obayomi, Sie Yon Lau, Michael K. Danquah, Jianhua Zhang, Tung Chiong, Louise Meunier, Stephen R. Gray, Mohammad Mahmudur Rahman
Summary: In this study, sustainable adsorbents made from graphene oxide and other materials were synthesized and demonstrated for the removal of water-soluble dyes. The adsorbents showed promising adsorption capabilities and their performance was optimized by studying the effects of pH, adsorbent dosage, and temperature. The study suggests that the developed nanocomposites have a significant impact in effectively capturing dyes from aqueous environments.
Article
Chemistry, Physical
Truong Thi Phuong Nguyet Xuan Trinh, Do Minh Nguyet, Tran Hoang Quan, Trinh Ngoc Minh Anh, Doan Ba Thinh, Le Tan Tai, Nguyen Thi Lan, Dinh Ngoc Trinh, Nguyen Minh Dat, Hoang Minh Nam, Mai Thanh Phong, Nguyen Huu Hieu
Summary: Three-dimensional graphene aerogel materials were fabricated using ethylenediamine and graphene oxide sheets, and showed high adsorption capacities for methylene blue and methyl orange. Optimal adsorption conditions and mechanisms were identified through experiments.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Allen Rhay B. Bayantong, Yu-Jen Shih, Dennis C. Ong, Ralf Ruffel M. Abarca, Cheng-Di Dong, Mark Daniel G. de Luna
Summary: MFe2O4@GO (M = Cu, Co or Ni) synthesized via solution combustion method efficiently removes dye molecules from aqueous solutions with maximum adsorption capacities of 25.81, 50.15 and 76.34 mg g(-1) respectively. Among the graphene-metal ferrites investigated, NiFe2O4@GO exhibits the highest adsorbent performance due to its high specific surface area and presence of mesopores.
Article
Chemistry, Multidisciplinary
Wenbo Liu, Junwei Zeng, Yixun Gao, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Hamed Algarni, Yao Wang, Guofu Zhou
Summary: This study assembled three typical redox dye molecules with graphene to achieve high sensitivity gas sensing of NO2 at room temperature. Results from cyclic voltammetry and UV-vis spectroscopy indicated that the oxidation ability of the dyes positively correlated with the gas sensitivity and response time of the graphene-based materials.
Article
Chemistry, Physical
Toshiki Shimizu, K. Kanishka H. De Silva, Masanori Hara, Masamichi Yoshimura
Summary: We introduced a facile and economical method to fabricate graphene aerogels with controllable structural properties by incorporating carbon nanotubes and carbon nanofibers, and demonstrated their application in organic dye adsorption. The presence of oxygen functionalities gives an overall negative charge to the graphene aerogels, which exhibited a high adsorption capacity for cationic dyes and a relatively low adsorption capacity towards anionic dyes. The porosity of graphene aerogels, chemical and physical interaction of functional groups, overall charge on graphene aerogels and the dye molecules, and the size of the dye molecules are the main criteria that affect the selective dye adsorption.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
En-Rui Wang, Kun-Yauh Shih
Summary: The study synthesized ZnFe2O4/rGO (ZFG) adsorbents using a facile microwave hydrothermal method and successfully removed methylene blue dye with high adsorption efficiency and reusability.
Article
Chemistry, Analytical
Kamyar Shirvanimoghaddam, Bozena Czech, Sara Abdikheibari, Graham Brodie, Magdalena Konczak, Agnieszka Krzyszczak, Amani Al-Othman, Minoo Naebe
Summary: This paper discusses the principles and applications of microwave assisted pyrolysis, as well as the adsorption properties and other applications of biochar. The paper concludes that further research and optimization are needed for the development of microwave assisted pyrolysis biochar, but it has the potential to be a cost-effective, environmentally friendly, and tunable material for various applications.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Inorganic & Nuclear
Imran Khan Rind, Ahmet Sari, Mustafa Tuzen, Muhammad Farooque Lanjwani, Tawfik A. Saleh
Summary: Due to the high demand for clean water, there is a continued need for water treatment. In this study, graphene nanoplatelets modified with silicon dioxide nanoparticles were used for the adsorption of methylene blue from wastewater. Experimental and statistical analyses showed that the GNP-SiO2 nanocomposite exhibited good adsorption performance and could effectively remove MB dye from aqueous solutions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yajing Zhao, Junhui He
Summary: Hierarchically porous graphene materials (M-HPRGO) were prepared for rapid and efficient adsorption of lindane, showing excellent removal ability, fast adsorption rate, and high uptake capacity. pH, temperature, metal ions, and organic matters had no significant influence on the adsorption performance of M-HPRGO. The desorption process of adsorbed lindane was simple and complete, and the recycled M-HPRGO performed well in reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Environmental
Xinghe Xu, Shichang Sun, Juan Luo, Rui Ma, Junhao Lin, Lin Fang, Peixin Zhang, Yi Chen
Summary: Traditional heating often results in amorphous carbon or small graphite clusters, hindering electron transport in supercapacitors. Microwave heating, however, offers a molecular-level heating alternative. In this study, microwave irradiation was used to create biomass-based porous graphene with excellent specific surface area and capacitance. The microwave-induced rearrangement of amorphous carbon to ordered carbon, high-density hot spots, and graphite layer exfoliation were observed. The resulting graphene exhibited outstanding electrochemical performance, demonstrating the potential of microwave technology for preparing high-performance supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Tiantian Liu, Zhen Wang, Xinrui Wang, Guihua Yang, Yu Liu
Summary: A novel 3-D biopolymer-based adsorption-photocatalytic composite, polyaniline/dicarboxyl acid cellulose@graphene oxide, was synthesized and applied for the removal of reactive brilliant red K-2G from aqueous solution. The composite showed excellent adsorption and photocatalysis performance, reaching high removal capacities in both adsorption-photocatalysis and simultaneous processes. The study suggests that the composite has great potential for treating dye-polluted wastewater.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
