Article
Materials Science, Multidisciplinary
O. Mertah, K. El Hajjaji, S. El Amrani, K. Tanji, I. Goncharova, A. Kherbeche
Summary: The heterostructures of Cu/TiO2@Ag3PO4, formed by placing Cu/TiO2 nanoparticles on Ag3PO4, can significantly enhance the photocatalytic activity for nitrate reduction under simulated visible light irradiation and exhibit good antibacterial activities against E. coli and S. aureus.
Article
Environmental Sciences
Bingrui Ma, Naling Yu, Shuaishuai Xin, Yanjun Xin, Chunlei Zhang, Xiaoming Ma, Mengchun Gao
Summary: The g-C3N4/TNAs photoelectrodes exhibit excellent visible-light response, efficient charges separation, and high redox potentials of electron/hole, which are favorable for p-CNB degradation. The simultaneous roles of reductive electrons and oxidized species, as well as the dependency on photo-generated holes and center dot OH for mineralization, were crucial during the dechlorination process. The Z-scheme g-C3N4/TNAs provided an efficient approach for simultaneous dechlorination and mineralization of refractory pollutants.
Article
Materials Science, Multidisciplinary
V Deepthi, B. Vidhya, Anju Sebastian
Summary: ZnO/Ag3PO4 heterostructure-based thin films were prepared via hydrothermal and SILAR deposition processes. The samples were characterized using various techniques, including SEM, XRD, EDS, UV-Vis spectroscopy, and PL spectroscopy. The combination of Ag3PO4 and ZnO nanorods in the heterostructure displayed enhanced photocatalytic activity, recyclability, and stability compared to pure ZnO nanorods. Under visible light irradiation, the Ag3PO4-ZnO nanorod combination with a 5 times dip of Ag3PO4 showed an excellent photodegradation efficiency of MB (86%), surpassing pure ZnO nanorods (60%).
Article
Engineering, Environmental
Qing Huang, Wenyi Yuan, Qifei Ke, Yaping Guo, Lincai Wang, Chenfeng Wang
Summary: The rapid growth of the photovoltaic solar industry has resulted in a significant amount of waste silicon panels. Managing and recycling these waste silicon panels is crucial for environmental remediation and economic efficiency. In this study, waste solar silicon wafers were processed to obtain silicon powder, which was then used to synthesize TiO2/Si through hydrothermal synthesis. This TiO2/Si was further modified with Ag3PO4 and Co3(PO4)2 to form a composite catalyst, APO/CPO/TIO/Si. The photocatalytic properties of this catalyst were evaluated using methyl orange degradation rate, and the analysis revealed the major active substances and the enhanced photocatalytic activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Peng Chen, Yumeng Liang, Yifeng Xu, Yunliang Zhao, Shaoxian Song
Summary: A novel method using methylene blue as a photosensitizer for the homogeneous degradation of methyl orange under visible-light irradiation was proposed. The degradation mechanism involves Type II pathway and Type I photosensitization, and synchronous removal of methyl orange and methylene blue can be achieved by controlling the initial methylene blue concentration. This cost-effective method shows great potential in eliminating methyl orange and methylene blue from wastewater and offers a new strategy for sustainable water treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Electrical & Electronic
Ye Tian, Xuefei Li, Weiwei Lei, Na Liu, Jinghai Yang
Summary: A graphitized carbon nitride (g-C3N4)/tungsten nitride (W2N3) heterostructure was successfully synthesized without using any catalysts and templates through high temperature calcination method. The prepared g-C3N4/W2N3 heterostructure exhibited excellent photocatalytic performance under visible light irradiation. Characterization results showed that W2N3 nanosheets were coated on g-C3N4 nanosheets. The heterostructure of W2N3 and g-C3N4 enhanced the absorption capacity of visible light and promoted the photocatalytic activity of methyl orange (MO) by separating photogenerated electron hole pairs.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Ming-Yu Qi, Qiong Lin, Zi-Rong Tang, Yi-Jun Xu
Summary: A novel CdS/TNS heterostructure enables the coupling of CO2 photoreduction with benzyl alcohol oxidation to synthesize C-C bonds with high selectivity. The synergistic interaction between CdS and TNS improves the selectivity of the C-C coupled products, which involves the formation of CH(OH)Ph radicals as key intermediates.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Environmental Sciences
Saeedeh Shahbazkhany, Mehdi Salehi, Mehdi Mousavi-Kamazani, Zohreh Salarvand
Summary: Three photocatalyst-adsorbents were synthesized using hydrothermal method, with Zn0.94Mn0.06O showing the highest decolorization efficiency and adsorption capacity, a band-gap of 2.89 eV, and the adsorption mechanism investigated through BET analysis and zeta potential.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Shengrong Liang, Mingze An, Sainan Xia, Bingbing Zhang, Bin Xue, Guomin Xu
Summary: In this study, corn straw biochar (BC) was prepared by high-temperature pyrolysis and titanium dioxide/biochar composites (TiO2/BC) were prepared by ultrasonic assisted vacuum impregnation. The TiO2/BC(650) composite exhibited good crystal structure and larger specific surface area compared to pure TiO2. It showed improved band edge absorption and excellent light absorption properties. The photocatalytic degradation performance of the TiO2/BC composites, particularly TiO2/BC(650), was evaluated and found to have a high photocatalytic activity in the removal of the simulated organic pollutant.
Article
Biotechnology & Applied Microbiology
Shahina Kader, Md. Rashid Al-Mamun, Md. Burhan Kabir Suhan, Sanzeeda Baig Shuchi, Md. Shahinoor Islam
Summary: The study focuses on improving the photocatalytic performance of TiO2 semiconductors through doping and co-doping with different metals and nonmetals. The synthesis of TiO2-based photocatalysts and the construction of immobilized borosilicate glass reactors were conducted. The results showed that the Ag/MoO3/TiO2 photocatalyst had the highest degradation efficiency for methyl orange dye under UV irradiation.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Multidisciplinary
Themba D. Ntuli, Ludwe L. Sikeyi, Faria Dziike, Neil J. Coville, Edward N. Nxumalo, Manoko S. Maubane-Nkadimeng
Summary: Waste cooking oil was converted into onion-like nanocarbons (OLNCs) through flame pyrolysis and then combined with TiO2 to form TiO2/OLNC nanocomposites using hydrothermal treatment. The mass ratio of TiO2 to OLNCs was varied, while the mass of TiO2 was kept constant. The nanocomposites exhibited enhanced photocatalytic activity and degradation efficiency for methyl orange due to the high adsorption efficiency of OLNCs and the hindrance of electron-hole recombination.
APPLIED SCIENCES-BASEL
(2023)
Article
Biotechnology & Applied Microbiology
Tayebe Karami, Hassan Alijani, Majid Abdouss, Zahed Ahmadi
Summary: In this research, an Ag3PO4/CdS/CNT photocatalyst was prepared using an advanced oxidation method and showed excellent performance in removing methyl orange from water under visible light irradiation. The properties and structure of the catalyst were investigated using various analytical techniques, and the optimized photocatalyst exhibited improved performance with reduced band gap and decreased photoluminescence. The experimental results showed that the photocatalyst prepared at pH 2.5 for 60 minutes with a concentration of 0.4 g/L achieved a degradation rate of 98% for methyl orange.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Polymer Science
Hayati Mohamad Mukhair, Abdul Halim Abdullah, Zulkarnain Zainal, Hong Ngee Lim
Summary: The effectiveness of PES-Ag3PO4/g-C3N4 film photocatalyst in degrading methyl orange dye under visible light irradiation was explored in this study. The results showed that 13 wt % loading of Ag3PO4/g-C3N4 composite was the best for maintaining degradation performance. The predominant species responsible for methyl orange degradation were found to be O-2(-) and h(+).
Article
Chemistry, Physical
Shuolin Zhou, Junzhuo Bai, Keying Huang, Xinlu Ye, Yingqing Peng, Min Lei
Summary: Developing a rapid and reliable method for measuring the photoreactivity of TiO2 pigments is of great importance for industrial application. In this study, the photoactivity of industrial TiO2 pigments was evaluated through the photodegradation of methyl orange (MO). The results showed that anatase TiO2 pigment accelerated MO degradation, while rutile pigment acted as a stabilizer and effective UV absorber to slow down the degradation. Additionally, the mechanism of MO degradation was elucidated through the analysis of degradation intermediates and calculated data.
Article
Materials Science, Ceramics
Damian C. Onwudiwe, Violet M. Nkwe, Olalekan C. Olatunde, Hela Ferjani
Summary: The combination of carbon-based materials with semiconductor nanoparticles of different structures promotes unique properties. The photocatalytic activity of g-C3N4/Cu-Bi2S3 heterostructure was investigated in this study, showing about 95% degradation efficiency for methyl orange.
CERAMICS INTERNATIONAL
(2023)
