Article
Chemistry, Physical
Mingsong Wang, Yicheng Zhu, Qiang Luo, Chuanxin Ge, Guiwu Liu, Guanjun Qiao, Eui Jung Kim
Summary: Intermittent UV irradiation before and after exposure to target gas significantly enhances the sensitivity of ZnO to NO2, due to the unique porous nanosheet array structure with macropores and mesopores, grown at low temperature and elucidating growth kinetics and sensing mechanism.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Solmaz Rajabi Firoozabadi, Mohammad Reza Khosravi-Nikou, Ahmad Shariati
Summary: In this study, a novel photocatalyst of TiO2 nanoflower (TNF) with UiO-66 composites (TNF@xU) was synthesized and investigated for CO2 photoreduction process. The as-synthesized composites were characterized and it was found that TNF@25%U exhibited the highest activity due to its strong CO2 adsorption and improved electron-hole separation. The effects of different parameters on CH4 and CH3OH production were evaluated using response surface methodology, and the maximum production rates were achieved under optimal conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Yin Fen Cheng, Zhong Li, Min Zhang, Hua Guang Xie, Tao Tang, Yi Liang, Xuan Xing Wang, Kai Xu, Bao Yue Zhang, Azhar Ali Haidry, Jian Zhen Ou
Summary: In this study, tailorable 2D SnO nanosheets with thicknesses between 1.5 and 3 nm are prepared by controlling self-limiting oxidation over the liquid Sn surface. The nanosheets exhibit high sensitivity and reversibility for NO2 detection at room temperature.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Environmental
Qiaorong Guo, Dongbin Wei, Chuanfang Zhao, Cuiping Wang, Haijun Ma, Yuguo Du
Summary: This study found that the physical UV-blocker CG-TiO2 could break the organic coatings and promote the chemical reactions of chemical sunscreen BP-1, leading to the formation of highly toxic products during UV irradiation. A total of 24 transformation products were identified, including hydroxyl BPs, hydroxyl dibenzo-p-dioxins, and hydroxyl benzoyl benzoquinones. This study highlights the role of CG-TiO2 in promoting the transformation of chemical sunscreens and generating higher toxicity during UV irradiation, providing scientific data for evaluating the fate and potential risk of sunscreens in the environment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Nimmala Harathi, Manoj Bollu, Kedhareswara Sairam Pasupuleti, Zhandos Tauanov, Koteswara Rao Peta, Moon-Deock Kim, Maddaka Reddeppa, Argha Sarkar, Vempuluru Navakoteswara Rao
Summary: The TiO2 NPs/PrGO heterostructure sensor fabricated in this work showed superior NO2 response at room temperature. The sensor exhibited high sensitivity, repeatability, excellent selectivity, and short response/recovery times towards NO2 gas. Additionally, UV irradiation accelerated the gas sensing performance of the TiO2 NPs/PrGO sensor.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Kun Hu, Yuanfan Li, Chuanxin Ge, Ling Bai, Guiwu Liu, Guanjun Qiao, Sung Gu Kang, Eui Jung Kim, Mingsong Wang
Summary: In this work, a three-dimensional ordered macroporous Au-loaded SnO2 sensor was developed, demonstrating ultrahigh room-temperature ppb-level NO2 sensitivity under intermittent UV light irradiation. The Au/SnO2 inverse opal structure was fabricated using a polystyrene opal crystal template, with finely dispersed Au nanoparticles anchored on the interconnected walls of SnO2. The decoration of Au nanoparticles improved the NO2 response of SnO2, especially under intermittent UV irradiation. The sensing mechanism responsible for the enhanced response toward NO2 was explained.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Environmental Sciences
Ping Wang, Yi Ding, Liting Zhu, Yunhao Zhang, Sijie Zhou, Linbei Xie, Ao Li
Summary: The establishment of a Fe(VI)/TiO2/UV system for photocatalytic oxidation of DMP has shown higher efficiency compared to traditional systems. RSM was used to develop a quantitative model for the photocatalysis process. Characterization of fresh TiO2 and Fe(VI)/TiO2 indicated the inhibition of DMP degradation. The proposed system showed high degradation efficiency in industrial wastewater and simulated water, with practical field applications indicated.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Agricultural Engineering
Quanliang Wang, Pengling Yang, Min Wang, Longxiao Zhu, Shuyan Xu, Liping Cai, Yanjun Xie
Summary: As a derivative of agriculture crops and forestry cultivated plants, cellulosic fiber product (CFP) is a promising alternative to wooden composites and plastics due to its low environmental impact. The high-performance CFP was fabricated without adhesives and its physical and mechanical stability was evaluated through a UV aging test. The delignified CFP showed increased tensile and flexural strength, but exhibited faster reduction in mechanical strength and decreased thermal stability compared to lignin-rich products under UV irradiation.
INDUSTRIAL CROPS AND PRODUCTS
(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
Polymer Science
Tomislav Grzan, Lucianna Grieco, Vjekoslav Zivkovic, Goran Mihulja
Summary: Various surface modification techniques have been developed to enhance the wetting, adhesion, and printing properties of synthetic polymer surfaces by adding functional groups. UV irradiation has shown potential as a suitable method for surface modification of polymers, which can also improve the bonding properties of wood-glue systems. This study aimed to assess the feasibility of UV irradiation as a pretreatment for wood surfaces before gluing and evaluate the properties of wooden glued joints. The research found that UV irradiation improved the bonding properties of differently machined wood.
Review
Engineering, Environmental
Alam S. M. Nur, Marzia Sultana, Atol Mondal, Sumon Islam, Fataha Nur Robel, Aminul Islam, Mst Sumaia Aktar Sumi
Summary: Dye-contaminated water poses a global problem due to its negative impact on human health and the aquatic environment. Photocatalysis using TiO2 as the prime choice catalyst shows promise for dye pollution remediation, but its low quantum efficiency under solar radiation limits commercialization. Research has focused on increasing TiO2's efficiency through doping and morphological modifications to enhance dye degradation under UV-Vis irradiation.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Physical
Shilin Wang, Yuqing Han, Yusheng Luo, Yunfei Ma, Jinlong Zhang, Baozhu Tian
Summary: A novel surface plasmon resonance (SPR) photocatalyst Au(T)-TiO2(MS) was fabricated by anchoring Au thorns on TiO2 hierarchical microspheres (MS). The Au thorns not only respond to visible and NIR light but also effectively promote the separation of photogenerated charge carriers in TiO2(MS). The photocatalyst displays excellent bactericidal activity and stability under red and NIR light irradiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Chukwuka Bethel Anucha, Emin Bacaksiz, Vassilis N. Stathopoulos, Pavlos K. Pandis, Christos Argirusis, Constantina-Dia Andreouli, Zoi Tatoudi, Ilknur Altin
Summary: In this study, a sol-gel-derived TiO2 material was prepared and doped with Mo using sonochemical method. The as-prepared material showed improved properties compared to unmodified TiO2 and achieved significant degradation of carbamazepine under UV irradiation. The effects of various factors on the degradation process were also investigated.
Article
Engineering, Environmental
Bryan Liu, Lauren Mullen, Emma M. Payne, Karl G. Linden
Summary: Krypton chloride (KrCl*) excimer ultraviolet (UV) light may offer advantages over conventional low-pressure (LP) UV for contaminant degradation. The authors investigated the direct and indirect photolysis as well as UV/hydrogen peroxide-driven advanced oxidation (AOP) of two chemical contaminants in different water samples using KrCl* and 254nm, 222nm UV sources. The results showed that the 222nm excimer lamps significantly improved the degradation of contaminants compared to the conventional 254nm LPUV. Rating: 8/10.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jinping Zhang, Haijun Chen, Meijiang Liu, Tianliang Lu, Beibei Gao, Xiaomei Yang, Lipeng Zhou, Hongji Li, Yunlai Su
Summary: Research has found that the addition of base can efficiently activate phenols in surface complexes, leading to a blue-shifted absorption and increased visible light-induced electron excitation, which enhances the activation efficiency of phenols.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)