Article
Environmental Sciences
Ying Jiang, An Liu
Summary: This study used TiO2 and cornstalk biochar to prepare biochar-TiO2 composites for treating methyl orange (MO) in water. The composites prepared using biochar generated at 700℃ and a TiO2/biochar mass ratio of 0.75/1 showed the best performance on MO decolorization and mineralization efficiency. Factors such as low pH, low initial MO concentration, and 1 g/L of composite amount added enhanced MO degradation efficiency. The biochar-TiO2 composites were easier to separate from water compared to pure TiO2, benefitting their recycling after application.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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
Water Resources
Ahmed S. El-Shafie, Maha Abouseada, Marwa El-Azazy
Summary: In this study, pistachio nutshells-derived biochar was utilized as a cost-effective adsorbent for efficiently removing methyl orange dye from wastewater. The morphology, stability, and structure of the biochar and its TiO2 functionalized form were extensively analyzed using various characterization techniques. It was found that the TiO2 functionalized biochar exhibited a synergistic photocatalytic-adsorptive efficiency in dye removal. The experimental results showed that the TiO2 functionalized biochar achieved a higher removal rate compared to adsorption alone.
APPLIED WATER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wen -Min Wang, Shi-Jer Tseng, Yu-Shuan Huang, Qian-Yuan Wu, Wen-Long Wang, Jerry J. Wu
Summary: Nitrate pollution in wastewater is a threat to human health and the environment. Photocatalytic reduction using a novel hollow-structured Pd/TiO2 photocatalyst shows high efficiency in removing nitrate and high selectivity for N2 yield.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Environmental Sciences
Uddandarao Priyanka, Piet N. L. Lens
Summary: Inorganic-microbial hybrid systems integrate the light-harvesting properties of semiconductors with microbial cells to create sustainable, efficient, and versatile chemical synthesis platforms. This study demonstrates the use of light-driven photocatalytic semiconducting Aspergillus niger cells-ZnS nanoparticles for enhanced removal of the dye methyl orange.
Article
Biotechnology & Applied Microbiology
Md Rashid Al-Mamun, Md Nafiul Karim, Naufida Afroj Nitun, Shahina Kader, Md Shahinoor Islam, Md Zaved Hossain Khan
Summary: The nanocomposites of TiO2 photocatalyst doped with graphene oxide (GO) and silver (Ag) nanoparticles show higher performance in the removal of organic dyes, with great potential for sustainable management of textile wastewater under solar irradiation. The photocatalytic efficiency is enhanced by the addition of oxidant H2O2, and the time-dependent degradation of dye is best fitted with the experimental data.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Thaleia Ioannidou, Maria Anagnostopoulou, Dimitrios Papoulis, Konstantinos C. Christoforidis, Ioanna A. Vasiliadou
Summary: Metal-organic frameworks (MOFs) have shown great potential as emerging porous materials for various applications. In this study, ternary composite materials consisting of UiO-66, palygorskite clay mineral (Pal), and titanium dioxide (TiO2) were developed for the removal of methyl orange (MO) from aqueous solutions. The addition of Pal to UiO-66 improved the adsorption efficiency of MO, and coupling Pal/UiO-66 with TiO2 resulted in complete removal of MO. This study highlights the importance of coupling MOFs with low-cost clay minerals and photocatalysts for the development of advanced multifunctional composites.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Hao Sun, Seul-Yi Lee, Soo-Jin Park
Summary: Photocatalytic technology is a promising alternative for water treatments, but its practical application is limited by low efficiency and selectivity. In this study, two-dimensional zinc oxide nanosheets decorated with copper-palladium bimetallic nanoparticles were synthesized for the degradation of organic dyes in water. The prepared composites showed superior photocatalytic performance compared to pristine ZnO nanosheets under visible-light irradiation, attributed to enhanced separation and transfer efficiency of charge carriers. The highest catalytic efficiency was achieved by CuPd/ZnO nanocomposite with 0.5 wt% CuPd, achieving 95.3% removal of methyl orange within 45 minutes. This study provides a new avenue for the design and fabrication of high-performance photocatalysts for water treatments.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Chemical
Meiling Tu, Jinkun Yu, Jun Wang, Xiao Shi, Zhixiang Fu, Sainan Hu, Mingqiang Zhong, Zhengdong Fei
Summary: TiO2/BTMSPA hybrid particles with coral-like structure were prepared for the removal of methyl orange dye from wastewater. The structure and adsorption mechanism of the particles were analyzed, and the adsorption isotherms and kinetics of methyl orange were studied. The hybrid particles showed high decolorization rates, maximum adsorption capacity, and excellent performance for the removal of other anionic dyes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yushun Zhou, Taimei Cai, Shuai Liu, Yanyan Liu, Huijie Chen, Zhongtian Li, Jun Du, Zhiqiang Lei, Hailong Peng
Summary: A novel catalyst of N-doped magnetic three-dimensional (3D) carbon microspheres@TiO2 was developed from low-cost biomass of chitin, showing high surface area and excellent photocatalytic degradation performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Shuang Zhou, Qiying Wang, Zhendong Xu, Shenke Xu, Peiyi Yang, Hao Deng, Bobo Li, Yifan Dong, Peigang Han, Yaorong Su
Summary: This paper presents a facile antisolvent solvothermal method for synthesizing MAPbBr(3) nanocrystals and utilizing them as efficient photocatalysts. The AS-MAPbBr(3) shows enhanced optical and catalytic properties, achieving superior performance in the photocatalytic degradation of methyl orange.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
F. Z. Janani, H. Khiar, N. Taou, A. Elhalil, M. Sadiq, A. V. Puga, S. Mansouri, N. Barka
Summary: This research prepared ZnO-Al2O3-CeO2-Ce2O3 mixed metal oxides phases and evaluated their photocatalytic degradation performance of methyl orange, finding that the photocatalyst developed from Zn-Al-Ce10%-CO3 LDH showed the highest photocatalytic activity with a degradation efficiency of 99.8%.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
Jing Li, Guangzhong Xie, Jin Jiang, Yanyou Liu, Chunxu Chen, Weixiong Li, Junlong Huang, Xiaolan Luo, Ming Xu, Qiuping Zhang, Min Yang, Yuanjie Su
Summary: Piezo-potential promoted photocatalysis shows promise in efficient dye decomposition, but it is limited by low quantum yield and piezoelectric activity of catalysts. In this study, a heterogeneous CdS-Au composite photocatalyst was synthesized and showed enhanced photocatalytic activity for organic pollutants degradation. The synergistic effect of piezo-phototronic and localized surface plasmon resonance facilitated efficient carrier separation and internal quantum efficiency. The loading of Au nanoparticles modulated CdS nanosphere properties and improved photocatalytic activity for Methyl Orange degradation.
Article
Chemistry, Multidisciplinary
Jiwen Li, Meizi He, Jiankun Yan, Jiahui Liu, Jiaxin Zhang, Jingjun Ma
Summary: In this study, Cu2O nanocrystals with different morphologies were successfully synthesized using a wet-chemistry strategy at room temperature. Cubic Cu2O(100) exhibited excellent photocatalytic activity and better photoelectric separation efficiency.
Article
Materials Science, Multidisciplinary
V. Ramasubbu, P. Ram Kumar, T. Chellapandi, G. Madhumitha, E. M. Mothi, X. Sahaya Shajan
Summary: Highly porous three-dimensional TiO2@Cd-MOF nanocomposite aerogels were synthesized and sensitized to enhance the photocatalytic activity for pollutant degradation. The nanocomposite aerogels exhibited superior photocatalytic performance under visible-light irradiation.
