Article
Chemistry, Physical
Vrinda S. Punnakkal, E. Anila
Summary: In this study, a simple chemical synthesis method was used to prepare polypyrrole/silver/graphene (Ppy/Ag/Gr) ternary nanocomposites with varying concentrations of graphene. The interaction between polypyrrole, silver, and graphene was studied using XRD, FTIR, and UV-Vis spectroscopies. The results showed that the addition of the optimum concentration of graphene into Ppy/Ag enhanced its photocatalytic property. Furthermore, it was confirmed that the enhancement of photocatalysis in the Ppy/Ag/Gr sample was due to the increased surface area.
SURFACES AND INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Rajamani Ranjithkumar, Chi Van Nguyen, Ling Shing Wong, Jaya Ganesh Thiruvengadam Nandagopal, Sinouvassane Djearamane, Govindasamy Palanisamy, Devaraj Bharathi, Jintae Lee
Summary: In this study, chitosan-functionalized bismuth oxychloride/zinc oxide (BiOCl/ZnO) nanocomposite was synthesized by a modified hydrothermal route. The synthesized nanocomposite showed crystalline, agglomerated spherical, and rod-shaped morphology with a size range of 35 to 160 nm. UV-light irradiation demonstrated the high catalytic degradation ability of the synthesized nanocomposite towards Congo red (CR) dye. Moreover, the CS-BiOCl/ZnO photocatalyst showed significant photocatalytic activity even after three consecutive cycles, indicating its potential application for organic pollutant remediation in various industries.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Tadesse Bassie Gelaw, Balladka Kunhanna Sarojini, Arun Krishna Kodoth
Summary: Advanced photocatalytic degradation based on polymer/metal oxide hybrid composites has been achieved in this study. A chitosan/hydroxyethyl cellulose (CS/HEC) gel immobilized polyaniline (PANI)/CuO/ZnO composite was prepared and characterized. The degradation study using Congo red as the target pollutant showed good catalytic efficiency and stability of the hybrid nanocomposite. The results indicate that the hybrid nanocomposite is a promising photocatalyst for removing anionic dyes.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
J. Gaur, K. Vikrant, K. -h. Kim, S. Kumar, M. Pal, R. Badru, S. Masand, J. Momoh
Summary: Zinc oxide nanoparticles (ZnO NPs) with hexagonal wurtzite structure were prepared using Carica papaya leaf extract, and they demonstrated excellent photocatalytic activity in the degradation of Congo red dye under UV irradiation.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Environmental Sciences
Sameena Mehtab, M. G. H. Zaidi, Ankit Singh, Minakshi Pandey, Anjali Mahra, Shubham Sharma, Mohammad Aziz, Diksha Palariya, Barkha Singhal
Summary: The development and characterization of SrTiO3 doped biochar nanohybrid photocatalysts were demonstrated. The biochar nanohybrid was synthesized using an ultrasonic-assisted dispersion technique and characterized through comprehensive analysis of their properties. The results showed that the biochar nanohybrid exhibited reduced optical band gap, enhanced conductivity, and good thermal stability. Furthermore, the fabricated biochar nanohybrid-derived photocatalytic plates showed high photocatalytic efficiency for the degradation of congo red dye.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Karuppusamy Indira, Sabarathinam Shanmugam, Anjana Hari, Seerangaraj Vasantharaj, Selvam Sathiyavimal, Kathirvel Brindhadev, Ahmad El Askary, Ashraf i Elfasakhany, Arivalagan Pugazhendhi
Summary: Nickel-titanium dioxide (Ni-TiO2) nanoflakes were synthesized using Mukia maderaspatana leafs in this study, showing potential as efficient photocatalysts for degrading dyes in wastewater under UV illumination.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Ali Sadek Kadari, Yasmina Khane, Abdelkader Nebatti Ech-Chergui, Adriana Popa, M'hamed Guezzoul, Dan Silipas, Farid Bennabi, Abdelhalim Zoukel, Erdal Akyildiz, Kouider Driss-Khodja, Bouhalouane Amrani
Summary: Pristine and Gd-doped ZnO thin films were synthesized using spray pyrolysis and were analyzed to investigate the effects of Gd ion doping on their properties. The presence of Gd in the films and its impact on structural, morphological, chemical, and optical characteristics were confirmed. The Gd-doped films showed improved catalytic degradation efficiency under visible light compared to pristine ZnO.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
A. Modwi, Bakheit Mustafa, Arafat Toghan, Kamal K. Taha
Summary: Y2O3@g-C3N4 composite with different calcination temperatures was prepared using the ultrasonication method in the presence of methanol, and its photocatalytic performance was evaluated for the degradation of Congo red (CR). XRD analysis revealed that the crystal size of Y2O3@g-C3N4 decreased from 16.17 to 14.18 nm as the temperature increased from 180 to 340 °C. SEM images confirmed the dispersion of Y2O3 within the g-C3N4 sheets, while EDX and XPS analysis determined the elemental composition. The Y2O3@g-C3N4 showed excellent photocatalytic activity, following pseudo-first-order kinetics, due to charge carriers' separation and involvement of e(-) and (OH)-O-center dot through an S-scheme mechanism.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Azad Qayoom Malik, Tahir ul Gani Mir, Owais Amin, Manda Sathish, Deepak Kumar
Summary: The CuS/ZnO nanocomposite was prepared using a simple mechanical method and its characteristics were analyzed using XRD and SEM. Electrochemical studies showed that the nanocomposite exhibited enhanced photocatalysis and better photochemical stability. This suggests that the prepared CuS/ZnO nanocomposite could have practical applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zia Ul Haq Khan, Amjad Khan, Noor Samad Shah, Israf Ud Din, Mohamed Abdel Salam, Jibran Iqbal, Nawshad Muhammad, Muhammad Imran, Mazar Ali, Murtaza Sayed, Muhammad Attique Gohar
Summary: In this study, green synthesized nickel oxide nanoparticles (NiONPs) were prepared using an extract of the medicinal plant Tribulus terrestris. The NiONPs were characterized using various techniques and showed size variation with different concentrations of plant extract. The NiONPs exhibited inhibitory effects on various fungal species and bacteria, as well as antioxidant properties and catalytic activity for dye degradation. The mechanisms for degradation and ecotoxicity assessment were also explored.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Parth Shah, Kartik Joshi, Manan Shah, Ashish Unnarkat, Femina J. Patel
Summary: Coloured wastewater is a significant issue for human health and ecology, and photocatalysis shows promise for its complete degradation. This study synthesized NiFe2O4 and modified it by creating composites with TiO2. The results demonstrate that NiFe2O4-based nanocomposites can serve as effective and magnetic retrievable photocatalysts.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Junyang You, Chang Liu, Xi Feng, Bowen Lu, Lei Xia, Xupin Zhuang
Summary: A facile and reliable strategy to create ZnS nanoparticles supported by cellulose/chitosan sponge was developed for efficient removal of dyes from wastewater. The ZnCCSs exhibited outstanding adsorption and photocatalytic degradation performances, resulting in a high removal ratio and excellent stability after reusability cycles. This study provides a promising way of removing dye contaminants through a combination of various mechanisms.
CARBOHYDRATE POLYMERS
(2022)
Article
Biotechnology & Applied Microbiology
Peyman Koohi, Ahmad Rahbar-kelishami, Hadi Shayesteh
Summary: In this study, the adsorption of congo red using Fe3O4/NiO magnetic nanocomposites was investigated, with the Langmuir model showing the best fit. Results indicated that Fe3O4/NiO nanocomposites have high efficiency and low equilibrium time for CR removal.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Md. Sahadat Hossain, Supanna Malek Tuntun, Newaz Mohammed Bahadur, Samina Ahmed
Summary: This research examines the photocatalytic activity of hydroxyapatite and the improvement of efficiency by doping copper. The study found that copper doping significantly enhanced the photocatalytic efficacy of hydroxyapatite in degrading Congo red dye. Various characterization techniques were used to assess the catalysts, and a relationship was established between the crystallographic parameters and photocatalytic performance.
Article
Chemistry, Multidisciplinary
Rajlaxmi, Neelam Gupta, Ravi Prakash Behere, Rama Kanta Layek, Biplab Kumar Kuila
Summary: The modern world requires a chemical industry with reduced production costs, high-quality products, and low environmental impact. The polymer nanocomposite-based flow catalytic membrane reactor is considered as a new alternative solution. Flow catalysis offers advantages like uninterrupted operation, good recyclability, and simple purification, suitable for various catalytic model reactions.
MATERIALS TODAY CHEMISTRY
(2021)