Article
Chemistry, Analytical
Yinan Zeng, Min Zhang, Kefu Peng, Zu Man, Lu'an Guo, Wenping Liu, Shilei Xie, Peng Liu, Dong Xie, Shoushan Wang, Faliang Cheng
Summary: A photoelectrochemical molecular imprinting sensor based on Au/TiO2 nanocomposite was developed for the detection of dibutyl phthalate (DBP). Through the growth of TiO2 nanorods by hydrothermal method and electrodeposition of gold nanoparticles on TiO2, the Au/TiO2 composite was fabricated. Then, a molecular imprinted polymer (MIP) was electropolymerized on the Au/TiO2 surface to enhance the photoelectric conversion efficiency and sensitivity of the sensor. The MIP also provided highly selective recognition sites for DBP molecules. The sensor exhibited a wide linear range, low limit of detection, and good selectivity, showing promising applications in environmental analysis.
Article
Chemistry, Physical
Abing Guo, Xin Wang, Hao Liu, Xinhao Li, Lintao Yang, Weijun Yang
Summary: In this study, Ag@MOF-525 composite catalysts were prepared and used for visible photocatalytic degradation of pollutants in water. The results showed that Ag@MOF-525 exhibited higher photocatalytic activity compared to MOF structural unit (TCPP) and MOF-525, effectively degrading RhB and TC.
SURFACES AND INTERFACES
(2023)
Article
Environmental Sciences
Karen Yuanting Tang, James Xiaoyuan Chen, Enrico Daniel R. Legaspi, Cally Owh, Ming Lin, Ice Si Yin Tee, Dan Kai, Xian Jun Loh, Zibiao Li, Michelle D. Regulacio, Enyi Ye
Summary: The Au-embedded TiO2 nanofibers showed superior photocatalytic degradation efficiency for organic dye pollutants, attributed to the plasmon resonance absorption of Au nanoparticles and effective charge separation at the Au-TiO2 hybrid heterojunction.
Review
Environmental Sciences
Hanane Chakhtouna, Hanane Benzeid, Nadia Zari, Abou el Kacem Qaiss, Rachid Bouhfid
Summary: Doping silver nanoparticles into titanium dioxide semiconductor is an effective strategy to enhance its photocatalytic activity, prevent recombination of electron/hole pairs, and improve bactericidal performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Erisa Sugiura, Mai Furukawa, Ikki Tateishi, Hideyuki Katsumata, Satoshi Kaneco
Summary: The Ag/Ag2O-modified ZnO photocatalyst prepared by a simple method showed excellent performance in degrading the organic pollutant DBP, being four times more efficient than zinc oxide alone. The addition of Ag and Ag2O increased the total pore volume of the photocatalyst, leading to an increase in active sites. The efficient electron transfer of Ag/Ag2O/ZnO was found to be responsible for the enhanced activity.
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2022)
Article
Chemistry, Multidisciplinary
Viorica Musat, Lenuta Crintea (Capatana), Elena-Maria Anghel, Nicolae Stanica, Irina Atkinson, Daniela Cristina Culita, Liliana Baroiu, Nicolae Tigau, Alina Cantaragiu Ceoromila, Andreea-Veronica Botezatu (Dediu), Oana Carp
Summary: This paper investigates the effect of silver on the photocatalytic and antibacterial activities of double-coated iron oxide nanoparticles, demonstrating high efficiency in dye removal and strong antimicrobial activity under certain conditions.
Article
Chemistry, Multidisciplinary
Layla Almazroai, Rasha E. El-Mekawy, Rihab Musa, Lina Ali
Summary: Sensitization of TiO2 using dyes shifts its spectrum to the visible region, leading to improved hydrogen production. The sensitized photocatalysts exhibited similar morphology and nanoscale particle size, with increased absorbance in the visible region. The addition of the C2 derivative in Ag/TiO2 significantly enhanced the photocatalytic and sonophotocatalytic rates of hydrogen evolution. Methanol addition inhibited photogenerated electron/hole recombination and increased the rate. The sensitization of metal oxides shows promise in industry for producing clean energy in high quantities.
Article
Chemistry, Physical
Linsong Wu, Xiaofang Pei, Mengjun Mei, Zhen Li, Shiwei Lu
Summary: This study prepared Ag-TiO2 photocatalysts with different silver contents and applied them to cement mortar. The results showed that 2% Ag-TiO2 had the highest photocatalytic activity under UV light, while 5% Ag-TiO2 had the highest photocatalytic activity under solar light. Photocatalytic mortar prepared by the spraying method exhibited high photocatalytic performance without affecting the mechanical properties of the mortar.
Article
Environmental Sciences
Cheng Li, Chunjing Liu, Rongzhen Li, Yue Liu, Jianzhi Xie, Bowen Li
Summary: This study optimized the culture conditions of a DBP degradation strain and investigated its degradation pathways. The results showed that Acinetobacter baumannii DP-2 had a DBP degradation rate of up to 85.86%, with the pathway being DBP -> PA -> BA. This is of great importance for the development of effective PAEs pollution control strategies.
Article
Environmental Sciences
Yongsheng Chen, Dexiang Liao, Yue Lin, Tianyu Deng, Fang Yin, Penghao Su, Daolun Feng
Summary: A PTFE-doped PbO2 anode with high hydrophobicity was fabricated by electrodeposition, and its performance in degrading DBP was compared with conventional Ti/PbO2 and Ti/TiO2NTs/PbO2 electrodes. The Ti/TiO2NTs/PbO2-PTFE electrode showed the highest efficiency in DBP removal, lowest energy consumption, and the degradation process followed a pseudo first-order kinetic model.
Article
Environmental Sciences
Jie Chi, Haitong Zhang, Dongxu Zhao
Summary: The study investigated the effects of microplastics on the degradation of Di-n-butyl phthalate (DBP) in offshore sediments. Results showed that microplastics at different concentrations affected the degradation percentage of DBP, with higher sorption ability microplastics leading to lower degradation percentage. Microbial community structure was more influenced by microplastic type than concentration. The findings suggest that the persistence of pollutants in the coastal environment is dependent on the type and concentration of microplastics.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Davinder Kaur, Karanveer Singh, William T. T. Reynolds Jr, Bonamali Pal
Summary: Graphene oxide (GO) is a promising material in photocatalysis, adsorption, and energy storage due to its high surface area and unique layered structure. Anthracite coal is an attractive precursor for GO because it provides high concentration of sp(2) carbon, resulting in high conductivity and absorbance in the visible region. GO-TiO2 nanocomposites were prepared to enhance photocatalytic activity by facilitating electron transmission from TiO2 to GO, and Ag nanoparticles were coated on TiO2 to further boost activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Hongwei Ding, Jingjing Yang, Rui Liu, Yan Li, Xueliang Liu, Xiangyue Wang, Lin Jin
Summary: Driven by clean solar energy, photocatalytic technology using mesoporous TiO2 nanoparticles modified with Ag nanocrystals and polydopamine shows high efficiency in degrading organic pollutants and killing pathogenic bacteria.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Viet Van Pham, Ha Phuong Phan La, Hai Viet Le, Sang Tan Truong, Thang Quoc Nguyen, Thi Minh Cao
Summary: A Ag/ZnO junction coated on a polypropylene membrane was synthesized for the removal of nitrogen oxide gas under visible light. The study showed that 3 wt% silver nanoparticles were the best composite sample for the removal of nitrogen oxide on the polypropylene membrane.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Siyuan Zhang, Zewen Sun, Yue Zhou, Wenshu Chen, Qianhui Wu, Jianhua Sun, Leiming Lang
Summary: Ag nanoparticles significantly enhance the photocatalytic activity of self-organized TiO2 nanotube structures. In this study, novel Ag/TiO2 tube-in-tube fibers were prepared using a simple electrospinning technology and calcination process. As a photocatalyst, the composite efficiently catalyzes the photodegradation of the model organic pollutant, rhodamine B, under visible light irradiation, showing superior photocatalytic activity compared to undoped TiO2 tube-in-tube fibers. This enhancement is attributed to the plasmonic characteristics of Ag nanoparticles, which promote light absorption and charge transfer feasibility. The simple, low-cost, and green fabrication route of the composite provides a novel means for preparing similar materials, holding great promise for wider application in the future.