Article
Chemistry, Physical
Junwei Yuan, Hua Li, Guan Wang, Cheng Zhang, Yuxiang Wang, Liujun Yang, Miaomiao Li, Jianmei Lu
Summary: In this study, a high photocatalytic efficiency is achieved by compounding N-doped carbon nanotubes and polyaniline fibers with Ag3PO4 nanoparticles to create a built-in electric field. A novel approach of wrapping beta-cyclodextrin around PANI fibers to isolate electron/hole composite channels is proposed. By reducing recombination probability and improving electron transfer efficiency, the catalyst shows superior performance in degrading phenol under visible light.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Aparna Prabha Devi, Deepak Kumar Padhi, Ashish Madhual, Pravat Manjari Mishra, Ajay Kumar Behera
Summary: A plant biomass mediated ecofriendly synthesis approach was used to design gold nanoparticles (gAuNPs) on reduced graphene oxide (RGO) using Averrhoa carambola leaf extract at room temperature. The combination of folded RGO sheets and polar biomolecules of the leaf extract helped enhance the growth inhibition effect and significantly reduce the size of gAuNPs in the nanocomposite. The synthesized compound was characterized using various techniques including XRD, TEM,STEMHAADF, Raman, FT-IR, and UV-Vis DRS spectra, revealing a size of 8±3 nm for gAuNPs on 2D-RGO sheets. The gAuNPs loaded on RGO exhibited high photocatalytic degradation rates for various pollutants under visible light irradiation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Chengkai Xia, Heng Wang, Jung Kyu Kim, Jingyu Wang
Summary: The research focuses on the rational design of metal oxide heterostructures to enhance photo-to-chemical energy conversion efficiency using photocatalytic and photoelectrochemical systems. Strategies to improve conversion efficiency include surface modification, surface regulation, and interfacial assembly with various materials. The underlying reaction mechanisms and challenges in developing metal oxide-based heterostructures for photo-to-chemical devices are also discussed.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Engineering, Environmental
Younes Dehmani, Donia Dridi, Taibi Lamhasni, Sadik Abouarnadasse, Radhouane Chtourou, Eder C. Lima
Summary: This review discusses the adsorption performance of transition metal oxides in the removal of phenol, with a particular focus on the effects of synthesis methods and adsorption parameters. Furthermore, an in-depth analysis of the adsorption kinetics and mechanism is provided.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Green & Sustainable Science & Technology
Haneen H. Shanaah, Eman F. H. Alzaimoor, Suad Rashdan, Amina A. Abdalhafith, Ayman H. Kamel
Summary: Metal oxide nanoparticles are highly effective for water cleanup applications, as they have unique qualities such as their large surface area, high number of active sites, stability, and low toxicity. This review focuses on the production, surface modification, and adsorptive and photocatalytic degradation of organic pollutants using various metal oxide nanomaterials. The study also covers the degradation of pesticides and provides detailed information on their effects, concentration, and the need for their degradation. Rating: 8/10
Article
Materials Science, Ceramics
Muhammad Farooq Warsi, Khadija Chaudhary, Sonia Zulfiqar, Abdur Rahman, Ibrahim A. Al Safari, Hafiz Muhammad Zeeshan, Philips O. Agboola, Muhammad Shahid, Muhammad Suleman
Summary: In this study, visible-light-active binary metal doped Mn0.9Cu0.05Ag0.05O2 nanostructures were synthesized and found to exhibit improved visible light activity and prolonged separation of photoinduced carriers. The binary metal doping not only influenced the crystal structure of MnO2, but also led to enhanced antibacterial and photocatalytic performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Maria-Anna Gatou, Nefeli Lagopati, Ioanna-Aglaia Vagena, Maria Gazouli, Evangelia A. A. Pavlatou
Summary: Semiconductor photocatalysts, specifically ZnO nanoparticles, were synthesized using four different precursors and their properties were compared. The nanoparticles synthesized from zinc acetate showed the highest photocatalysis efficiency and had a cell-dependent anticancer effect. The enhanced properties were attributed to reduced crystalline size, increased surface area, and hexagonal crystalline morphology of the nanoparticles derived from zinc acetate.
Article
Engineering, Environmental
Xueying Cheng, Renquan Guan, Yunning Chen, Yudan Qian, Qingkun Shang, Yingnan Sun
Summary: In this study, the adsorption and photocatalytic degradation of oxytetracycline (OTC) were investigated using different metal-doped TiO2 nanocatalysts (M-TiO2, M = Fe, Co, Ni, Cr). The effects of different metal dopants on the adsorption and degradation abilities of TiO2 were studied. The photocatalytic performance of Fe-TiO2 was found to be excellent due to the synergy between the separation ability of photogenerated carriers and the adsorption ability of pollutants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Shreya Singh, Rahul Garg, Atanu Jana, Chinna Bathula, Soniya Naik, Mona Mittal
Summary: Clean water is essential for all living beings, but pollution caused by rapid industrialization, population growth, urbanization, global warming, extensive agriculture, and climate change has made access to clean water difficult. Wastewater treatment has become a top priority for every country due to the number of deaths caused by diseases related to waste or polluted water. Nanotechnology provides potential solutions for improving water purification and disinfection, with metal oxide nanoparticles offering unique properties and applications in removing pollutants from wastewater.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Lakshmi Krishnasamy, Kadirvelu Krishna, Sivakumar Subpiramaniyam
Summary: Polyacrylonitrile (PAN)-based-modified zinc oxide (ZnO) nanofibers were synthesized and evaluated for their photocatalytic degradation of the herbicide atrazine. La-doped ZnO PAN nanofibers showed larger diameter and higher catalytic activity, achieving 98% degradation efficiency within 1 hour.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
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
Construction & Building Technology
Guoping Qian, Xuan Zhu, Huanan Yu, Changyun Shi, Ding Yao
Summary: The study found that the photocatalytic self-clean pavement nanomaterial coating can effectively degrade Nitric Oxide and oil pollution, with the optimal coating amount influenced by UV radiation intensity and reaction time, and the degradation rate initially increasing and then stabilizing with the amount of coating.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Leyu Peng, Jiaxi Liu, Ziyuan Li, Yifan Jing, Yongjin Zou, Hailiang Chu, Fen Xu, Lixian Sun, Pengru Huang
Summary: In this study, nitrogen-rich g-C3N4 nanosheets were synthesized by a one-step thermal polymerization method. The self-doping and ultrathin structure of g-C3N4 resulted in excellent catalytic performance and the introduction of midgap states, achieving efficient separation of photogenerated carriers.
Article
Nanoscience & Nanotechnology
Lulu Zhu, Baiyu Zhang, Qian Su, Runlu Liu, Jingyi Lin, Hua Wang, Shenmin Zhu, Yao Li
Summary: Introduction of oxygen vacancies can enhance the photocatalytic activity of BiVO4-based heterojunctions and promote the separation of charge carriers.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Mir Sayed Shah Danish, Liezel L. Estrella, Ivy Michelle A. Alemaida, Anton Lisin, Nikita Moiseev, Mikaeel Ahmadi, Massoma Nazari, Mohebullah Wali, Hameedullah Zaheb, Tomonobu Senjyu
Summary: Environmental remediation is crucial for sustainable development worldwide, with wastewater treatment technology playing a key role in purifying water systems. The use of metal oxide nanoparticles as photocatalysts for degrading water pollutants is a promising approach due to their non-toxicity, stability, and strong photocatalytic activities.
