Article
Chemistry, Physical
Amal A. Atran, Fatma A. Ibrahim, Nasser S. Awwad, Mohd Shkir, Mohamed S. Hamdy
Summary: A one-step synthesis method was used to prepare porous sponge-like ceria (CeO2). The solid material was characterized and found to have a three-dimensional pore system. The porous ceria exhibited higher photocatalytic activity compared to the commercial sample in both liquid and gas phase reactions. Furthermore, the porous ceria showed low deactivation after multiple runs.
Article
Chemistry, Multidisciplinary
Xiaoqian Ai, Shun Yan, Chao Lin, Kehong Lu, Yujie Chen, Ligang Ma
Summary: CeO2@ZnO nanocomposites were prepared by pyrolyzing Ce@Zn metal-organic frameworks, which showed improved photocatalytic performance due to the formation of a nanoheterojunction structure. The effects of the Zn:Ce ratio on the microstructure, morphology, and optical properties of the nanocomposites were studied. The prepared photocatalysts exhibited higher photocatalytic activity than previously reported CeO2@ZnO nanocomposites, suggesting their potential in environmental remediation.
Article
Chemistry, Physical
Yu Cao, Shi Nee Lou, Sicong Wang, Hui Yang, Qitao Zhang, Chengyin Wang, Naoya Murakami, Teruhisa Ohno
Summary: This study investigates the potential of Pt sensitizers as co-catalysts for visible light photocatalytic degradation of acetaldehyde. The Pt(II) oxide/TiO2 catalyst shows the best photocatalytic activity but suffers from stability issues. Surface modification with a Fe(III) oxide sensitizer layer enhances both the stability and activity of Pt(II) oxide/TiO2, leading to improved performance.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Construction & Building Technology
Emmanuel Tapia-Brito, James Riffat, Yixin Wang, Yuhao Wang, Amir M. Ghaemmaghami, Christopher M. Coleman, Mehmet T. Erdinc, Saffa Riffat
Summary: This paper details the development process of a novel method using Photocatalytic Oxidation (PCO) technology to eliminate air pollutants and suspended pathogens in enclosed spaces. Two functional prototypes demonstrate the operation of the PCO-based air purification principle, with one prototype utilizing a novel TiO2 coated fiber mop system for UV irradiation. A series of tests proved the prototypes' functionality and efficiency in reducing VOCs and formaldehyde (HCHO).
BUILDING AND ENVIRONMENT
(2023)
Article
Chemistry, Physical
Maarja Kask, Marina Krichevskaya, Sergei Preis, Juri Bolobajev
Summary: The study explores the oxidation of aqueous toluene by gas-phase pulsed corona discharge (PCD) and subsequent photocatalytic treatment of exhaust air, showing high energy efficiency. The results have the potential application in closed-loop energy-saving ventilation systems.
Article
Chemistry, Physical
Muhammad Ishfaq, Muhammad Aadil, Syeda Rabia Ejaz, Warda Hassan, Nadia Masaya Panduro-Tenazoa, Mohamed E. El Sayed, Mohammad N. Murshed, Zeinhom M. El-Bahy
Summary: In this study, a copper and bismuth co-doped CeO2 nanostructure was synthesized using subcritical hydrothermal method for water remediation application. The co-doping of copper and bismuth synergistically improved the conductivity and light-harvesting capabilities of the co-doped CeO2, as confirmed through current-voltage and optical studies. The microstructural, compositional, and morphological information of the photocatalyst were analyzed using powder XRD and spectroscopic techniques. The as-prepared co-doped CeO2-based photocatalyst demonstrated efficient mineralization of the anionic dye methyl orange under solar irradiation, outperforming a CeO2 photocatalyst in terms of effectiveness and rate of dye mineralization. The co-doped CeO2 photocatalyst also exhibited excellent robustness and retained its photocatalytic activity after multiple reusability tests.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Kanglu Li, Hong Wang, Lvcun Chen, Jieyuan Li, Fan Dong
Summary: NOx and VOCs are primary air pollutants that can generate O-3 through photochemical reactions. However, using a highly efficient In(OH)(3) photocatalyst can degrade mixed NO and C7H8, thereby inhibiting the formation of O-3.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Rukeyamu Kayisier, Yuhua Ma, Kezhen Qi, Lu Xiao, Yun Wang, Yuchen Li, Jiawen Li, Yunpeng Li
Summary: CeO2/hydrothermally treated red phosphorus (HRP) heterojunction composite was formed to enhance the photocatalytic degradation of Rhodamine B (RhB). The 5%CeO2/HRP composite exhibited the highest rate constant value of 0.071 min-1, which was significantly higher than that of pure HRP and CeO2. The introduction of heavy metal Cr(VI) improved the removal of RhB by simultaneously removing two target pollutants and enhancing the utilization efficiency of photogenerated carriers.
Article
Green & Sustainable Science & Technology
Zahra Shayegan, Fariborz Haghighat, Chang-Seo Lee
Summary: The study improved the degradation efficiency of TiO2 photocatalyst under visible and UV light irradiations towards VOCs through hydrothermal treatment and surface fluorination techniques.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Abinash Das, Moumita Patra, Mathan P. Kumar, Muthuraaman Bhagavathiachari, Ranjith G. Nair
Summary: The construction and optimization of ZnO-CeO2 heterojunctions exhibit superior photocatalytic performance in the degradation of organic dyes, attributed to the formation of oxygen vacancies induced by Ce3+/Ce4+ ions in CeO2. The optimized catalyst also shows significant visible-light response and high charge-carrier separation efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Stepan Nosek, Tomas Duchacek, Pavol Magyar, Jan Prochazka
Summary: In this study, the effectiveness of photocatalytic titanium dioxide (TiO2) coatings in turbulent flow environments, such as street canyons, was investigated. Physical modeling principles were applied to simulate NOx photocatalysis in a polluted street canyon, and the results were compared with experiments in a standard laminar flow reactor (LFR). The study found that the LFR partially simulates photocatalysis in turbulent environments, but with a higher flow rate than recommended. The street canyon experiment showed that the performance of the photocatalyst was spatially dependent due to flow structures, and the removal efficiency was highest at the windward wall and lowest at the leeward wall. These findings provide valuable insights for the development and implementation of photocatalytic coatings in realistic urban pollution scenarios.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
K. A. Reyna-Cavazos, A. Martinez-de La Cruz, David Contreras, F. E. Longoria-Rodriguez
Summary: BiOI samples were synthesized using coprecipitation method and the addition of mannitol resulted in the formation of BiOI nanosheets with specific anisotropic growth. The different adsorbed organic materials on the sample surface justified the high NO conversion degree.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Green & Sustainable Science & Technology
Marie Le Pivert, Olivier Kerivel, Brahim Zerelli, Yamin Leprince-Wang
Summary: This study aims to reduce air pollution by developing civil engineering materials functionalized with ZnO nanostructures, which is more environmentally friendly and biocompatible.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Lijun Yan, Qing Wang, Wenqiang Qu, Tingting Yan, Hongrui Li, Penglu Wang, Dengsong Zhang
Summary: This study successfully regulated the structure of Pt/TiO2 catalyst through reduction-oxidation treatment, forming Pt/TiO2-C catalyst with a special interface, which can efficiently photocatalytically degrade toluene and exhibit stronger oxidation capacity and mineralization rate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Carlos J. Bueno-Alejo, Javier Graus, Raul Arenal, Marta Lafuente, Bruno Bottega-Pergher, Jose L. Hueso
Summary: A novel metal-semiconductor heterostructure with triangular and prism-shaped plasmonic gold nanostructures assembled onto ZnO nanostructures showed enhanced photocatalytic response towards VOC oxidation. The use of different LED excitation sources in the UV-vis-NIR range revealed expanded photo-response and improved performance compared to the plain ZnO counterpart.
Article
Chemistry, Physical
Claudio Maria Pecoraro, Marianna Bellardita, Vittorio Loddo, Danilo Virtu, Francesco Di Franco, Monica Santamaria
Summary: This study investigated the photocatalytic and photoelectrocatalytic reforming of furfuryl alcohol under environmental friendly conditions. The H2 evolution and partial oxidation to furfuraldehyde were monitored. TiO2 based photocatalysts were studied for the first time and the activity of homemade photocatalysts was compared with commercial ones under UVA and simulated solar irradiation. PEC tests were performed using homemade TiO2 nanotubes as photoanode and Pt free Ni foam as cathode to enhance the Hydrogen Evolution Reaction. The rates of both partial FA oxidation and H2 evolution were higher in the PEC process.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Applied
Roberto Fiorenza, Marianna Bellardita, Stefano Andrea Balsamo, Antonino Gulino, Marcello Condorelli, Giuseppe Compagnini, Salvatore Scire, Leonardo Palmisano
Summary: In this study, a solar photothermo-catalytic combined process was investigated, involving the oxidation of toluene to CO2 and the subsequent conversion of CO2 into solar fuels. Two noble-metal-free catalytic systems were used, MnOx-ZrO2 for toluene removal and brookite TiO2-CeO2 mixed oxides for CO2 conversion. The addition of copper-based materials as co-catalysts further improved the CO2 conversion. The synergism between thermocatalytic and photocatalytic mechanisms played a key role in enhancing energy saving and catalytic performance. The proposed approach has promising potential for obtaining solar fuels from toxic pollutants.
Article
Chemistry, Multidisciplinary
Claudio M. Pecoraro, Marianna Bellardita, Vittorio Loddo, Francesco Di Franco, Leonardo Palmisano, Monica Santamaria
Summary: In this study, noble metal-free modified TiO2 photocatalysts were prepared using ball milling, and Pt-photodeposition was performed. The results confirmed the effectiveness of Cu2O in replacing Pt.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Roberto Fiorenza, Luca Spitaleri, Francesco Perricelli, Giuseppe Nicotra, Maria E. Fragala, Salvatore Scire, Antonino Gulino
Summary: The photocatalytic performance of ZnO@Au nanostructures for the removal of toxic VOCs, such as toluene, ethanol, and formaldehyde, under solar light irradiation is reported. The ZnO@Au exhibited excellent activity and stability, with high selectivity towards CO2 formation. The efficient electronic communication between the gold core and the zinc oxide shell contributes to the overall photodetection and charge carrier separation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Neal Fairley, Giuseppe Compagnini, Vittorio Scardaci, John Baltrus, Adam Roberts, Anders Barlow, Peter Cumpson, Jonas Baltrusaitis
Summary: This article introduces the commonly used methods and significance of using derivatives in Auger Electron Spectroscopy (AES) and X-ray Photoelectron Spectroscopy (XPS). Differentiation of XPS and AES spectra for polymeric and graphitic materials is presented using numerical methods, including the explanation of the Savitzky-Golay method and two alternative differentiation methods. The importance of characterizing spectral differentiation methods and understanding instrumental characteristics for spectrum measurement is emphasized through a comparison of results for different materials.
SURFACE AND INTERFACE ANALYSIS
(2023)
Article
Chemistry, Physical
Stefano Andrea Balsamo, Eleonora La Greca, Marta Cala Pizzapilo, Salvatore Scire, Roberto Fiorenza
Summary: The interaction between CeO2-GO or CeO2-rGO and gold as co-catalysts was investigated for solar H-2 production by photoreforming of glycerol. The presence of gold was essential for boosting H-2 production, while GO or rGO extended the visible-light activity of cerium oxide. The strong interaction between CeO2 and Au led to good stability of the CeO2-rGO-Au sample and progressive reduction of GO into rGO contributed to the catalytic behavior.
Article
Nanoscience & Nanotechnology
Alberto Bellissima, Lorena M. Cucci, Vanessa Sanfilippo, Angela De Bonis, Roberto Fiorenza, Salvatore Scire, Tiziano Marzo, Mirko Severi, Diego La Mendola, Valentina Notarstefano, Elisabetta Giorgini, Cristina Satriano
Summary: A nanodelivery system based on palladium nanoparticles (PdNP) and cisplatin (CisPt) was developed by physisorption of the drug onto the PdNP synthesized via a green redox process. The nanoparticles showed both plasmonic and photocatalytic properties. The drug loading was quantitatively estimated and the strong association of the drug with the nanoparticle surface was confirmed. The developed nanomedicine exhibited antitumoral action and potential for tissue regeneration.
ACS APPLIED BIO MATERIALS
(2023)
Article
Chemistry, Physical
Carmelo Corsaro, Marcello Condorelli, Antonio Speciale, Francesco Cimino, Giuseppe Forte, Francesco Barreca, Salvatore Spadaro, Claudia Muscara, Manuela D'Arrigo, Giovanni Toscano, Luisa D'Urso, Giuseppe Compagnini, Fortunato Neri, Antonina Saija, Enza Fazio
Summary: The synthesis of contaminant-free silver@linear carbon chains (Ag@LCCs) nanohybrid systems, at different Ag/LCCs ratios, by pulsed laser ablation was investigated. The ablation products were characterized using UV-Vis optical absorption, micro-Raman spectroscopy, and transmission mode scanning electron microscopy. The experimental results were supported by theoretical simulations. Moreover, the bioproperties of the Ag@LCCs nanosystems were studied for wound-healing activity, and it was found that Ag@LCC nanohybrids exhibited good antibacterial properties and had enhanced interaction with mammalian cells, suggesting their potential application in wound healing.
Article
Chemistry, Applied
Roberto Fiorenza, Chiara Contarino, Vanessa Spano, Maria Teresa Armeli Iapichino, Stefano Andrea Balsamo
Summary: Two multi catalytic approaches, thermo-assisted solar photocatalysis and solar photoassisted thermocatalysis, were investigated to convert CO2 into valuable products. Thermo-assisted solar photocatalysis achieved a high CO2 conversion rate with the best sample showing 65% CO2 conversion and the formation of CO and CH4. Solar photoassisted thermocatalysis using Pd-Ni/TiO2 decreased the activation energy and increased the CO2/CH4 conversion at lower temperature, showing potential for the formation of solar fuels from CO2.
Article
Chemistry, Multidisciplinary
Vincenzo Patamia, Chiara Zagni, Roberto Fiorenza, Virginia Fuochi, Sandro Dattilo, Paolo Maria Riccobene, Pio Maria Furneri, Giuseppe Floresta, Antonio Rescifina
Summary: Bacterial involvement in cancer's development and their impact on therapy have led to the development of strategies involving metal-chelating agents and nanomaterials to disrupt microbial cell processes.
Article
Chemistry, Physical
Stefano Andrea Balsamo, Roberto Fiorenza, Maria Teresa Armeli Iapichino, Francisco Javier Lopez-Tenllado, Francisco Jose Urbano, Salvatore Scire
Summary: This study focuses on optimizing the solar photo-reduction method for preparing TiO2-rGO composites with simultaneous gold nanoparticles deposition. The photocatalytic performance was evaluated in hydrogen production by glycerol photoreforming under UV and simulated solar irradiation. The TiO2-rGO sample prepared with two hours of solar irradiation showed the highest hydrogen production rate (64 mmol H2 h-1 gcat-1) under UV light, while the one-hour treated sample exhibited the best performance (1.6 mmol H2 h-1 gcat-1) under simulated solar light due to smaller gold particle size. The reduction degree of GO and the presence of gold nanoparticles played crucial roles in the photocatalytic activity of the samples.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Sidika cetinkaya, Levent ozcan, Oguzhan Alagoz, Leonardo Palmisano, Sedat Yurdakal
Summary: Nanotube-structured TiO2 electrodes were formed on Ti plates by anodic oxidation in ethylene glycol solution, followed by decoration of WO3 on the nanotube surfaces electrochemically. The effects of various factors on the oxidation and product selectivity of 3-methylpyridine were investigated. It was found that decorating nanotube-structured TiO2 with WO3 significantly increased the yield of vitamin B-3 under UVA irradiation, while no products were obtained under Vis irradiation due to unselective photolytic reactions. This unexpected result was reported for the first time.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Rayhane Zribi, Angelo Ferlazzo, Enza Fazio, Marcello Condorelli, Luisa D'Urso, Giulia Neri, Carmelo Corsaro, Fortunato Neri, Giuseppe Compagnini, Giovanni Neri
Summary: This study fabricated and characterized a sensor based on silver nanoplates colloidal solutions deposited onto screen-printed carbon electrodes. The sensor showed wavelength-dependent and size-tunable electrochemical sensing response towards hydrogen peroxide (H2O2). The study also demonstrated the potential of using Ag nanoparticles with specific nanoplates morphology for electrochemical redox probes.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Review
Chemistry, Physical
Muhammad Umair, Tayyaba Kanwal, Vittorio Loddo, Leonardo Palmisano, Marianna Bellardita
Summary: In recent years, water pollution has become a major concern due to the high consumption of drugs and their use in livestock. Advanced oxidation processes, which involve the production of reactive oxygen species, have shown high efficiency in degrading organic pollutants in wastewater. However, the degradation of drugs can lead to the formation of more harmful compounds. This review provides an overview of recent advances in using advanced oxidation processes to remove organic drugs, highlighting their advantages and disadvantages and discussing their application in removing common drugs.
