Article
Chemistry, Physical
Jong-Ho Kim, Sayed Mukit Hossain, Hui-Ju Kang, Heeju Park, Leonard Tijing, Geun Woo Park, Norihiro Suzuki, Akira Fujishima, Young-Si Jun, Ho Kyong Shon, Geon-Joong Kim
Summary: In this study, anatase titania was modified with Al(OH)(3) and various organosilanes to prepare a durable photocatalytic paint with enhanced photoactivity towards NO oxidation and self-cleaning properties. Through a facile hydrolysis approach in ethanol, multiple organosilanes were coated on the parent titania surface to achieve both hydrophobic and hydrophilic regions for uniform dispersion and strong bonding with the organic matrix. The modified titania exhibited efficient NO removal and UV durability, showcasing the potential of ethanol hydrolysis of organosilanes for designing coatings on anatase titania for durable photoactive paint fabrication.
Article
Environmental Sciences
Burak Yuzer, Muhammed Iberia Aydin, Ahmet Hilmi Con, Hatice Inan, Safiye Can, Huseyin Selcuk, Yassine Kadmi
Summary: Cu(II)-doped TiO2 nanoparticles were found to impart self-cleaning and antibacterial properties to cotton fabric, showing significant removal of coffee stains, especially under UV illumination. Additionally, textiles modified with Cu-doped TiO2 NPs exhibited antibacterial activity against E. coli.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Ceramics
Xuan Wang, Hao Ding, Guocheng Lv, Run Zhou, Ruixin Ma, Xifeng Hou, Jianmeng Zhang, Wei Li
Summary: In this study, SiO2-TiO2 composite particles were successfully synthesized and used to fabricate superhydrophilic self-cleaning coatings on various substrates. The coatings demonstrated excellent photocatalytic degradation performance and superhydrophilicity. The results suggest that the as-prepared SiO2-TiO2 coating has a great potential for various applications.
CERAMICS INTERNATIONAL
(2022)
Review
Construction & Building Technology
Ioannis Karapanagiotis, Panagiotis N. Manoudis
Summary: This review summarizes recent progress in achieving extreme non-wetting properties on natural stone, highlighting two main strategies: treating stone surfaces with dispersions of engineering nanoparticles or developing carefully designed sol-gel processes. Materials with nearly extreme non-wetting properties on stone, impacting WCA and OCA over 140 degrees, are included in the discussion.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Zengkun Li, Haiyan He, Xuan Wang, Chunhui Shou, Mianji Huang, Shengli Jin, Xin Du
Summary: In this work, a SiO2 @TiO2 composite nanocoating with mechanical robustness, antireflection and photocatalytic self-cleaning properties was successfully fabricated by introducing commercial Degussa P25-type titania nanoparticles (P25) and acid-catalyzed silica sol (ACSS) via a simple dip-coating strategy without any post-treatment. The optimized nanocoating exhibits high transmittance, low reflectivity, good hydrophilicity, high photocatalytic activity, and high mechanical robustness.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Coatings & Films
Xuan Wang, Hao Ding, Sijia Sun, Han Zhang, Run Zhou, Yangzi Li, Yu Liang, Jie Wang
Summary: SiO2-TiO2@PDMS ternary compound with certain photocatalytic activity and superhydrophobicity was prepared in this study, showing excellent repellent effects towards different liquid droplets. The coating exhibited good mechanical stability and UV irradiation resistance, making it suitable for practical applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Archaeology
E. Boccalon, M. Nocchetti, M. Pica, A. Romani, K. Sterflinger
Summary: In this study, a novel PVA-borax hydrogel containing antimicrobial active ingredients was designed and tested on biodeteriorated stones. The hydrogels with silver nanoparticles and thyme essential oil were found to be the most efficient cleaning systems, opening up new possibilities for bioremediation. The effects of the treatments were assessed through staining techniques and colony forming unit assays specific to bacteria, fungi, and algae.
JOURNAL OF CULTURAL HERITAGE
(2021)
Article
Chemistry, Physical
M. J. Deepa, S. R. Arunima, S. M. A. Shibli
Summary: The integration of BiVO4/TiO2 composite into zinc coating is an effective strategy to enhance its hydrophobicity, corrosion resistance, self-cleaning performance, and photocatalytic performance. The coating shows excellent corrosion resistance and chemical stability, maintaining its hydrophobic nature even after 21 days of immersion in NaCl solution. It has wide potential applications in marine and industrial fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Paper & Wood
Esfandiar Pakdel, Hai Zhao, Jinfeng Wang, Bin Tang, Russell J. Varley, Xungai Wang
Summary: The research successfully developed self-cleaning cotton fabric with dual functionalities of superhydrophobicity and photocatalytic activity, using microhierarchial TiO2-based particles and fluorine-free coatings to achieve simultaneous superhydrophobicity and photocatalytic self-cleaning under simulated sunlight.
Article
Engineering, Chemical
Yifang Mi, Na Wang, Xingyu Fang, Jia Cao, Meng Tao, Zhihai Cao
Summary: The study prepared a self-cleaning NF membrane by incorporating CQD/TiO2 nanoparticles, enhancing membrane hydrophilicity and water flux, while maintaining high salt rejection and dye rejection rates. The NF membrane showed efficient degradation of dyes under visible light, stable self-cleaning performance during cyclic fouling-irradiation process, and minimal flux decline even after continuous fouling.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Ali Ansari, Nowrouz Mohammad Nouri
Summary: A repeatable and environmentally friendly method was used to prepare a hydrophobic surface with photocatalytic features. Titanium dioxide nanoparticles and fluorinated ethylene propylene (FEP) resins were applied on an aluminum substrate using layer-by-layer and mixing methods. The prepared films were analyzed and the photocatalytic activities were explored. The hydrophobicity and photocatalytic performance were better in the samples with one layer of titanium dioxide and three layers of FEP in the layer-by-layer method, and in the sample containing 10 wt% TiO2 in the mixing method.
CERAMICS INTERNATIONAL
(2023)
Article
Crystallography
Federico Giuffrida, Lucia Calcagno, Gianni Pezzotti Escobar, Massimo Zimbone
Summary: The photocatalytic properties of TiO2/FeO3 and TiO2/WO3 nanocomposites were investigated for the degradation of methylene blue. The non-conventional Doctor Blade technique was proposed as an easy and inexpensive method for material preparation. The use of solid substrates rather than powders and the high surface area of nanoparticles improved the photodegradation efficiency.
Article
Chemistry, Multidisciplinary
Thi Thuong Huyen Tran, Thi Kim Chi Tran, Thi Quynh Xuan Le, Nhat Linh Nguyen, Thi Minh Thuy Nguyen, Thi Thu Hien Pham, Truong Son Nguyen, Hoang Tung Do, Huy Hoang Do
Summary: In this study, TiO2-Au nanocomposites were successfully synthesized and their photocatalytic activity and self-cleaning behavior were investigated. The TiO2-Au photocatalysts showed high activity under visible light conditions, with enhanced adsorption capacity and dye decomposition. The contact angle measurement results demonstrated excellent anti-fogging and self-cleaning properties of the material, making it suitable for commercial sanitation products.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Rooha Khurram, Aroosa Javed, Ruihua Ke, Cheng Lena, Zhan Wang
Summary: The integration of GO/TiO2 in the membrane showed enhanced separation capability and visible light photo-degradation of pollutants, with NC(3)-CA membrane exhibiting the best performance.
Article
Chemistry, Physical
Kang Wang, Sirong Yu, Wei Li, Yuanji Song, Pu Gong, Mingshan Zhang, Huaisen Li, Daijun Sun, Xizhen Yang, Xuewu Wang
Summary: The ZnS superhydrophobic coating was successfully prepared on the zinc substrate using solvothermal method and chemical modification. The coating exhibited excellent physical and chemical self-cleaning properties, forming a Cassie contact state when water droplets contacted the surface.
APPLIED SURFACE SCIENCE
(2022)
Article
Construction & Building Technology
Marco Roveri, Sara Goidanich, Giovanni Dotelli, Lucia Toniolo
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Marco Roveri, Sara Goidanich, Lucia Toniolo
Article
Electrochemistry
Chiara Petiti, Davide Gulotta, Bruna Mariani, Lucia Toniolo, Sara Goidanich
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2020)
Article
Chemistry, Applied
Marta Ghirardello, Vanessa Otero, Daniela Comelli, Lucia Toniolo, David Dellasega, Luca Nessi, Matteo Cantoni, Gianluca Valentini, Austin Nevin, Maria Joao Melo
Summary: Cadmium yellows, introduced in the mid-19th century, have exhibited degradation in important artworks in recent years, prompting researchers to investigate historical production methods of leading suppliers such as Winsor & Newton. Analyses showed that cadmium yellow pigments synthesized following historical indications have distinct properties, including polytype crystal structure, smaller crystal grains, and the presence of chlorine ions, ruling out environmental contaminants as a triggering factor for degradation in artworks. Furthermore, the sensitivity of photoluminescence emission to pigment crystallite and grain size was observed, indicating a potential impact on the photo-reactivity of the pigment in artworks.
Article
Humanities, Multidisciplinary
Chiara Petiti, Sonia Pistidda, Jean Marie Welter, Lucia Toniolo, Mariacristina Giambruno, Sara Goidanich
Summary: This article investigates the preservation status of the Colossus of San Carlo Borromeo in Arona, Italy, and emphasizes the importance of a holistic approach to preserving cultural heritage. Despite being exposed to atmospheric agents that could cause corrosion, both the copper and iron elements of the statue remain well preserved. Through the study of documents, information, and diagnostic analyses, the factors contributing to the relatively good condition of the statue are identified.
JOURNAL OF THE INSTITUTE OF CONSERVATION
(2022)
Article
Materials Science, Multidisciplinary
Francesca Gherardi, Heather Stewart
Summary: This article introduces the multi-analytical protocol used by Historic England for the investigation of copper alloy artefacts recovered during underwater excavations. The protocol aims to determine manufacturing processes, identify repairs, and assess the state of preservation. The article presents examples from the study of copper alloy objects recovered from the Dutch East India Company Rooswijk shipwreck, highlighting the importance of this protocol for archaeological, metallurgical, and conservation purposes.
Article
Chemistry, Physical
Chiara Petiti, Carla Martini, Cristina Chiavari, Silvia Vettori, Jean Marie Welter, Paulina Guzman Garcia Lascurain, Sara Goidanich
Summary: The San Carlo Colossus, known as San Carlone, is a monument made of wrought iron and copper. After more than 300 years of outdoor exposure, the iron elements of the monument showed minimal galvanic corrosion despite direct contact with copper. The study revealed that the corrosion resistance of the iron is due to its noble corrosion potential, while areas of corrosion were attributed to environmental factors.
Article
Materials Science, Multidisciplinary
Paulina Guzman Garcia Lascurain, Sara Goidanich, Francesco Briatico Vangosa, Marilena Anzani, Alfiero Rabbolini, Antonio Sansonetti, Lucia Toniolo
Summary: In the past decade, the use of soft materials, such as gels and agar, has allowed for better control of the water release process for cleaning interventions. Agar, a cheap and easily available natural polysaccharide harvested from algae, has been proven to effectively clean stone materials, gypsum works, and paintings. A new type of agar, agar foam, offers even more control of water release and ease of application on delicate surfaces. The study compared agar foam with the conventional sol/gel agar system and found that the foam has improved dissipative behavior and can be applied with better control and ease. CO2 foam, in particular, reduces water release while maintaining moldability and ease of application. This study concludes that agar foam is a promising alternative for cleaning delicate surfaces with complex geometries.
Article
Humanities, Multidisciplinary
Lucrezia Milillo, Marei Hacke, Sara Norrehed, Ilaria Degano, Francesca Gherardi, Ellinor Gunnarsson
Summary: This study is the first scientific research on khipu dyes and inorganic mordants and auxiliaries, providing a new approach to understanding the meaningful materiality, technology, and colours of khipus. Khipus are often described as Andean knotted records, but they are more than just complex knotted cords: a significant amount of encoded information resides in the incredible colours of khipus.
Article
Chemistry, Multidisciplinary
Chiara Petiti, Lucia Toniolo, Letizia Berti, Sara Goidanich
Summary: The study of characterisation and production of artificial patinas is crucial in the field of cultural heritage. Both artistic and laboratory patinas were considered and investigated in this research, and the optimized procedures for producing laboratory patinas were found to be effective. Understanding the composition and corrosion behavior of patinas is essential for the preservation and conservation of artworks.
APPLIED SCIENCES-BASEL
(2023)
Article
Humanities, Multidisciplinary
Francesca Gherardi
Summary: The excavation of a Roman military cemetery near Birdoswald fort on Hadrian's Wall in the UK has revealed various types of burial practices. Through chemical analysis and microscopy, researchers have identified heat-affected glass vessels and beads in many cremation deposits, which were commonly used in cremation rituals. By examining the chemical composition of the samples, the researchers were also able to assess the temperatures during cremation, providing valuable insights into Roman funerary rituals and cremation technology in Britain.
Article
Metallurgy & Metallurgical Engineering
R. Pellicano, G. Nistico, L. Toniolo, M. C. Giambruno, S. Goidanich
Summary: Metallic materials, such as stainless steel and cor-ten steel, play a significant role in the conservation of built heritage. The use of cor-ten steel should be carefully assessed to avoid damage to historic materials. Patinated stainless steels have also been proposed for cultural heritage applications. This study analyzes the surface finishing of commonly used stainless steels and evaluates their suitability for conservation projects.
METALLURGIA ITALIANA
(2022)