Article
Engineering, Environmental
Wenqiang Liu, Meng Zhou, Heqing Fu
Summary: A ternary Ag@ZnO@Ti3C2 MXene heterojunction (AZM) is synthesized to enhance photocatalytic activity by compensating for MXene's narrow bandgap with ZnO and Ag nanoparticles. The optimized AZM heterojunction photocatalyst shows high degradation efficiency for organic dyes under visible light irradiation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Chandhini Muthukumar, Saad Alam, Eldhose Iype, Prakash B. G. Kumar
Summary: The study optimized the conditions for dye degradation through photocatalysis experiments, with pH being the most influential factor. With MB concentration at 80 ppm, PC loading at 0.15 g, and pH at 8, a degradation rate of 95% was achieved.
Article
Materials Science, Multidisciplinary
Wen Sun, Xuankun Li, Jingtao Zou, Han Guo
Summary: N-doped TiO2 with small crystallite size and good dispersibility was successfully synthesized using a hydrolysis precipitation method. The N-TiO2 showed excellent photocatalytic activity for the degradation of organic pollutants under blue light LED irradiation. Immobilizing N-TiO2 on SiC ceramic foam resulted in a promising photocatalytic material with high stability and efficiency.
Article
Nanoscience & Nanotechnology
Gustavo Z. Girotto, Alisson S. Thill, Livia P. Matte, Marco A. H. Vogt, Thiago V. Machado, Luis F. P. Dick, Fabiano Mesquita, Fabiano Bernardi
Summary: This study investigates the different acting mechanisms of photocatalysts by heating nickel nanoparticles and supporting them on SrTiO3. It found that there is a direct association between the nickel oxidation state and the atomic mechanism of photodegradation, which improves the degradation of methylene blue.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jiamei Zhao, Xinyue Cao, Yibo Bai, Jie Chen, Conglu Zhang
Summary: In this study, g-C3N4 modified CaTiO3 photocatalyst was prepared and characterized. The optimized CaTiO3/g-C3N4 showed high efficiency in the removal of methylene blue (MB) and levofloxacin (LVF) under mercury lamp illumination. The effects of photocatalyst dosage, solution pH, and co-existing ions in water were investigated, and a charge transmission mechanism and LVF degradation pathway were proposed. This work presents a new strategy for the synthesis of cost-effective CaTiO3 composites.
Article
Materials Science, Ceramics
Zaheer Ahmed Ujjan, Muhammad Ali Bhatti, Aqeel Ahmed Shah, Aneela Tahira, Nek Muhammad Shaikh, Shusheel Kumar, Abdul Qayoom Mugheri, Shymaa S. Medany, Ayman Nafady, Fahad Alnjiman, Melanie Emo, Brigitte Vigolo, Zafar Hussain Ibupoto
Summary: In this study, sulfide and chloride ions were successfully doped into ZnO through hydrothermal method. The doped ZnO nanostructures showed no significant change in morphology, retaining the wurtzite crystal structure with a red shift in XRD results. The successful doping of sulfide and chloride ions was confirmed by elemental analysis. Importantly, the optical band gap of ZnO was reduced upon doping, leading to enhanced photocatalytic properties. The doped ZnO photocatalyst achieved a high photo-degradation efficiency of methylene blue.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Abhishek Bhapkar, Rishi Prasad, Dipika Jaspal, Mandar Shirolkar, Kh. Gheisari, Shekhar Bhame
Summary: Zinc oxide nanoparticles were successfully synthesized using glycine nitrate solution combustion synthesis. The synthesized nanoparticles exhibited a pure hexagonal wurtzite-like structure of ZnO. They showed effective visible light catalytic activity in the degradation of methylene blue dye, degrading 98% of the dye in 120 minutes with 0.1 g/L of catalyst loading. Photoluminescence studies suggested that the enhanced photocatalytic activity may be attributed to the presence of singly ionized oxygen vacancy or intrinsic defects.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Qi Li, Yongfeng Chang, Feng Xie, Wei Wang
Summary: The study found that under the conditions of sonocatalytic degradation, the concentration of CCl4 and the initial pH of the solution had a significant impact on the degradation of methylene blue, while the effects of ultrasound power and temperature were comparatively minor. Adjusting the ultrasound power intensity and CCl4 concentration can further optimize the treatment efficiency.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Ruvini Jayawardena, Daniel S. Eldridge, Francois Malherbe
Summary: The adsorption of methylene blue on graphene oxide is influenced by intermolecular interactions and the physicochemical changes of GO. The modified oxidation method enhanced the adsorption capacities and created mesoporosity in the final materials. Moreover, the most performant GO showed high regenerability and maintained a removal efficiency greater than 90% after multiple cycles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Asif Nisar, Muhammad Saeed, Majid Muneer, Muhammad Usman, Iltaf Khan
Summary: The study reports the synthesis of ZnO-reduced graphene oxide catalyst for degradation of methylene blue, showing its high efficiency in dye removal and recyclability. Analysis of reaction kinetics revealed the Langmuir-Hinshelwood mechanism as the main kinetics mechanism for photodegradation of methylene blue.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Italo Lacerda Fernandes, Danns Pereira Barbosa, Sergio Botelho de Oliveira, Valdeir Antonio da Silva, Marcelo Henrique Sousa, Marly Montero-Munoz, Jose A. H. Coaquira
Summary: The study demonstrates that the double-coated magnetic nanoparticles nanocomposites exhibit excellent photocatalytic activity with strong degradation capability against methylene blue dye, as well as high stability. These nanocomposites have great potential for applications in wastewater treatment and purifying contaminants.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Meirong Zong, Duo Song, Xin Zhang, Xiaopeng Huang, Xiancai Lu, Kevin M. Rosso
Summary: Research has shown that the exposure of different crystal facets in hematite nanostructures affects the adsorption and photodegradation efficiency of methylene blue, mainly due to variations in iron ion sites and surface structures. Experimental comparisons and theoretical calculations on the (001) and (012) facets reveal that the (001) facet exhibits a higher photodegradation rate for methylene blue.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Siva Vadivel, Arunpandian Muthuraj, Murugan Anbazhagan, Shameem Abdul Samad, Raja Arumugam
Summary: A hybrid nano catalyst, CoMoO4 anchored zeolitic imidazolate framework-8, was successfully synthesized by a simple in-situ chemical method. The CoMoO4@ZIF-8 composites showed enhanced photocatalytic activity under visible light.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Multidisciplinary
Syed Nizam Uddin Shah Bukhari, Aqeel Ahmed Shah, Muhammad Ali Bhatti, Aneela Tahira, Iftikhar Ahmed Channa, Abdul Karim Shah, Ali Dad Chandio, Wael A. Mahdi, Sultan Alshehri, Zaffar Hussain Ibhupoto, Wen Liu
Summary: Wastewater from the textile industry, which contains various organic dyes, poses a chronic and hazardous problem for human health. A study conducted on the treatment of this wastewater using low-cost and efficient photocatalyst technology found that ZnO microstructures grown in the presence of psyllium husk showed enhanced photocatalytic activity towards the degradation of methylene blue. The psyllium husk modified the surface of the ZnO microstructures, created defects in the crystal structures, and altered the morphology of the nanostructured material. The addition of carbon from the thermal combustion of psyllium husk further improved the photocatalytic performance. The research also explored the optimal dosage of photocatalyst for efficient photodegradation of methylene blue.
Article
Chemistry, Physical
Muhammad Jamshaid, Muhammad Altaf Nazir, Tayyaba Najam, Syed Shoaib Ahmad Shah, Hasan M. Khan, Aziz Ur Rehman
Summary: In this study, Yb-Zn doped nanocrystalline M type hexaferrites were synthesized and their structural, optical, and electric properties were investigated. The results showed that Yb-Zn doping can tune the band gap of the hexaferrites and enhance their photocatalytic performance.
CHEMICAL PHYSICS LETTERS
(2022)