Article
Chemistry, Physical
Aleksandra Babyszko, Agnieszka Wanag, Marcin Sadlowski, Ewelina Kusiak-Nejman, Antoni W. W. Morawski
Summary: This paper presents a modification of titanium dioxide with fumed silica and investigates the characteristics and photocatalytic activity of the materials. The results show that the presence of SiO2 effectively inhibits the increase in crystallite size and decrease in specific surface area during calcination. SiO2 also contributes to the increase in specific surface area and the change in band gap energy values. The photocatalytic activity of SiO2/TiO2 photocatalysts is higher compared to the starting TiO2, and it increases with the increase in SiO2 content.
Article
Chemistry, Physical
Mai S. A. Hussien, Abdelfatteh Bouzidi, Hisham S. M. Abd-Rabboh, Ibrahim S. Yahia, Heba Y. Zahran, Mohamed Sh. Abdel-wahab, Walaa Alharbi, Nasser S. Awwad, Medhat A. Ibrahim
Summary: The incorporation of tungsten trioxide (WO3) into graphitic carbon nitride (g-C3N4) was studied, and the morphology, microstructure, optical properties, and photocatalytic activity of the composite photocatalyst were analyzed. The results showed that the particle size of the photocatalyst was affected by the incorporation of WO3, but the bandgap energy remained unchanged.
Article
Materials Science, Ceramics
E. Burak Ertus, Cekdar Vakifahmetoglu, Abdullah Oztuerk
Summary: The research found that porous glass embedded with titanium dioxide has a higher efficiency in methylene blue removal, mainly due to its high specific surface area and dispersion of nano-sized anatase TiO2 crystallites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Ying-jie Song, Hai-chao Li, Zi-wei Xiong, Long Cheng, Miao Du, Zun-qi Liu, Jun Li, De-qiang Li
Summary: This study used waste sawdust to prepare TiO2/C composites, which were used to effectively degrade methylene blue (MB) under simulated sunlight. The carbon component in the composite significantly enhanced sensitization, resulting in a wider visible light absorption and decreased charge recombination rate. The MB degradation efficiency reached nearly 100% within 30 minutes in the presence of TiO2/C composites, and the material showed sustained performance after multiple cycles. This green and low-cost preparation method offers a sustainable and efficient alternative to reduce the consumption of fossil resources.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Tianyu Yang, Yu Liu, Guangda Xia, Xiaodong Zhu, Yu Zhao
Summary: The utilization of the multilevel pore structure of natural wood for synthesizing titanium dioxide resulted in a material with improved adsorption and photocatalytic properties. Characterization using SEM, TEM, and X-ray diffraction revealed the presence of anatase and rutile phases in the prepared titanium dioxide.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Multidisciplinary
Nathan Martin, Yamin Leprince-Wang
Summary: The study utilized ZnO nanowires for photocatalytic degradation of the organic dye methylene blue, with real-time information provided through UV-visible spectrometry and HPLC-MS analysis. The latter allowed for identification of reaction intermediates and calculation of remaining dye concentration, indicating harmless levels for human exposure.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Bachir Kharroubi, Mohamed Bousmaha, Mohamed Amine Bezzerrouk, Ahmed Akriche, Rabie Naceur, M'hamed Guezzoul, Kadda Benmokhtar Bensassi, Kheira Zahafi, Abdelhalim Zoukel, Mahfoud Abdelkrim, Mahmoud Bedrouni, M'hammed Bouslama
Summary: In recent years, the rise of the textile and dye industry has resulted in contaminated rejects that significantly impact the ecosystem and aquatic reserves. It is necessary to develop cost-effective methods for degrading organic dyes. This study presents a new photocatalysis design by implementing the photocatalyst on the inner surface of a transparent glass tube. Pure and Cu-doped ZnO catalysts were synthesized and characterized using various techniques, and their efficiency in degrading methylene blue was investigated. The catalysts showed steady photodegradation efficiency after six recycling tests.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Wei Gao, Yufeng Li, Jitao Zhao, Zhe Zhang, Weiwei Tang, Jun Wang, Zhenyu Wu
Summary: Reduced graphene oxide (rGO)/TiO2 nanocomposites, synthesized through a hydrothermal technique, were used as photocatalysts to effectively degrade methylene blue (MB) in industrial dyestuff wastewater. The degradation efficiency of the nanocomposites for MB was as high as 98.18% at 5wt.% rGO content, 0.4 g L-1 rGO/TiO2 content, pH 6, and 60 mg L-1 MB concentration. The photocatalytic degradation mechanism involved immediate oxidative degradation and the combined action of O-2(center dot-), OH(center dot), and h(+) species. The degradation kinetic of the nanocomposites for MB followed a first-order model under UV irradiation.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Polymer Science
Ximena Jaramillo-Fierro, Sneyder Gaona, John Ramon, Eduardo Valarezo
Summary: In this study, GP and GTA geopolymeric materials were prepared and characterized. The compounds showed high adsorption capacity and photocatalytic activity for the degradation of MB dye. The incorporation of ZnTiO3/TiO2 in the geopolymeric matrix allowed GTA to achieve higher overall efficiency compared to GP, combining adsorption and photocatalysis. The synthesized compounds could be used for multiple cycles for the removal of MB from wastewater.
Article
Materials Science, Ceramics
Haibei Tan, Yabin Zhang, Bowen Li, Hao Yang, Haitao Hou, Qinglin Huang
Summary: A polymer-glass flat membrane was prepared using the phase inversion casting method and TiO2 was coated on the surface of the membranes. The membrane was characterized and its photocatalytic degradation of methylene blue was investigated. The results showed that the membrane coated by three layers TiO2 sol exhibited the best photocatalytic degradation performance for methylene blue.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Samuel Moles, Javier Berges, Maria P. Ormad, M. Jesus Nieto-Monge, Jairo Gomez, Rosa Mosteo
Summary: The TiO2/PAC/UV-vis process showed a high efficiency in removing antibiotics, especially with a significant synergy in treating amoxicillin. There was no influence of matrix type on this process, but due to the gradual deactivation of PAC, the treatment performance decreased gradually.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Roula Abi Saad, Ghassan Younes, Mohammad H. El-Dakdouki, Rami Al-Oweini
Summary: This study evaluated the effectiveness of three vanadium-substituted polyoxomolybdates for removing methylene blue dye from aqueous solutions, showing high removal efficiency towards the cationic dye. Optimized conditions revealed varying contact times for each material at 25 mg/L methylene blue, indicating the suitability of acid pH values.
JOURNAL OF CLUSTER SCIENCE
(2022)
Article
Environmental Sciences
Onkar Sudhir Ekande, Mathava Kumar
Summary: The study investigated the activation of persulfate in the presence of blue LED light using acetic acid modified graphitic carbon nitride and its application in metronidazole removal. The results showed an improvement in specific surface area and reduced charge transfer resistance in ACN. The main reactive species identified was sulfate radicals, while holes in the valence band of ACN played a minor role in metronidazole removal.
Article
Physics, Multidisciplinary
Hassan A. H. Alzahrani, Yaaser Q. Almulaiky, Abdulmohsen O. Alsaiari
Summary: This article focuses on the photocatalytic degradation of methylene blue (MB) using ZnO photocatalysts nanoparticles under UV light irradiation. The results show that the ZnO nanoparticles effectively degrade the MB dye with a crystallite size of 24.71 nm and a nanospeck dimension of 32 nm. The ZnO photocatalyst exhibits a low overpotential for HER and a Volmer-Tafel mechanistic pathway for the HER process. Chronopotentiometry experiments also demonstrate the ZnO nanoparticles' capability to produce hydrogen.
Article
Materials Science, Ceramics
Yabin Zhang, Haibei Tan, Chunfang Wang, Bowen Li, Hao Yang, Haitao Hou, Changfa Xiao
Summary: A TiO2-coated glass hollow fiber membrane was successfully synthesized and its photocatalytic removal of methylene blue from wastewater was investigated. The results showed that the membrane had good photocatalytic and antifouling properties, significantly improving the removal of methylene blue compared to the basement membrane. The membrane could be recycled multiple times with a high removal degree of methylene blue.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Iwona Pelech, Piotr Staciwa, Daniel Sibera, Ewelina Kusiak-Nejman, Antoni W. Morawski, Joanna Kapica-Kozar, Urszula Narkiewicz
Summary: In this study, ZnO/carbon spheres composites were prepared using zinc chloride and potassium oxalate as activating agents. The effects of their addition and preparation conditions on carbon dioxide adsorption properties were investigated. It was found that the sorption capacity measured at 40 degrees C confirmed the trend measured at 0 and 25 degrees C. The sample activated using potassium oxalate and modified using zinc chloride exhibited stable performance and high CO2 adsorption capacity during the consecutive multicycle adsorption-desorption process.
Article
Chemistry, Physical
Aleksandra Babyszko, Agnieszka Wanag, Ewelina Kusiak-Nejman, Antoni Waldemar Morawski
Summary: This paper investigates the effects of fumed silica modification and calcination temperature on the physicochemical properties and activity of photocatalysts under UV-VIS and VIS light. The materials were synthesized using titanium tetraisopropoxide hydrolysis and subsequent calcination. Various analytical techniques were used to characterize the nanomaterials. It was found that SiO2 modification inhibited phase transformation and crystal growth during calcination. The photocatalytic activity was enhanced by SiO2 addition and calcination, with the highest activity observed for the SiO2(11.1%)/TiO2_600 photocatalyst.
Article
Chemistry, Physical
Ewelina Kusiak-Nejman, Katarzyna Cmielewska, Agnieszka Wanag, Ewa Ekiert, Iwona Pelech, Urszula Narkiewicz, Antoni W. Morawski
Summary: Industrial TiO2 suspension from sulphate technology was used for samples preparation. One sample was directly calcined in an argon stream at 800 C-o. The second one, before the calcination in the same conditions, was modified with APTES in such a way that the final product contained about 2 wt% of silicon. Photocatalysts were tested in the CO2 reduction reaction containing the addition of gaseous nitrogen and water vapour. No activity was observed in the CO2 reduction reaction for a directly calcined sample that mainly consists of a rutile phase. It was found that the addition of silicon prevents the anatase-to-rutile phase transition by forming a Si-O-Ti chain containing the anatase phase and leads to gaseous products: hydrogen, carbon monoxide and methane, and ammonia. The presence of silicon generates paramagnetic recentres with g= 2.0028, which are associated with oxygen vacancies and delocalized electrons. This electronic structure is critical to the photocatalytic reduction of CO2 because the pure rutile phase (without silicon modification) does not reduce CO2, but only the presence of ammonia was found in the products.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Biochemistry & Molecular Biology
Paulina Rokicka-Konieczna, Agnieszka Wanag, Agnieszka Sienkiewicz, Dylan Shun Izuma, Ewa Ekiert, Ewelina Kusiak-Nejman, Chiaki Terashima, Atsuo Yasumori, Akira Fujishima, Antoni W. W. Morawski
Summary: The antibacterial activity of TiO2 photocatalysts modified by 3-aminopropyltriethoxysilane (APTES) was evaluated against Escherichia coli and Staphylococcus epidermidis under artificial solar light (ASL) irradiation. APTES-functionalized TiO2 samples were prepared through a solvothermal process followed by calcination. The best antibacterial properties were observed in the TiO2-4 h-120 degrees C-300 mM-Ar-300 degrees C sample, which had a positive zeta potential, high surface area, and porous volume.
Article
Chemistry, Physical
Ewelina Kusiak-Nejman, Katarzyna Cmielewska, Iwona Pelech, Ewa Ekiert, Piotr Staciwa, Daniel Sibera, Agnieszka Wanag, Joanna Kapica-Kozar, Marcin Gano, Urszula Narkiewicz, Antoni W. Morawski
Summary: This study presents new photocatalysts obtained by treating carbon spheres and TiO2 in a microwave reactor at high pressure and temperature, and depositing them on glass fibre cloths. These photocatalysts showed high CO2-adsorption and photoactivity in simultaneous water-splitting process, generating H-2, reducing CO2 to CO and CH2, and reducing N-2 to NH3. The addition of carbon spheres maintained a high selectivity of nitrogen fixation.
Article
Chemistry, Physical
Antoni W. Morawski, Marcin Gano, Katarzyna Cmielewska, Ewelina Kusiak-Nejman, Iwona Pelech, Piotr Staciwa, Ewa Ekiert, Urszula Narkiewicz
Summary: In the face of increasing global carbon dioxide emissions and the urgent need to mitigate climate change, the development of efficient and sustainable strategies for CO2 conversion has gained significant attention. This paper uses ZnO as a photocatalyst to investigate its efficiency in the photoreduction of CO2 in a gas-phase system. The study found that the particle size of ZnO has a significant impact on the process efficiency, with the smallest particle size (18 nm) showing the most effective catalytic activity for CO2 photoreduction.
Article
Nanoscience & Nanotechnology
Agnieszka Sienkiewicz, Ewelina Kusiak-Nejman, Agnieszka Wanag, Konstantinos Aidinis, Danuta Piwowarska, Antoni W. Morawski, Niko Guskos
Summary: APTES-TiO2 samples prepared by high-temperature calcination showed high intensity of electron paramagnetic resonance (EPR) lines and photocatalytic activity.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
