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Sutar SD, Patil I, Parse H, Mukherjee P, Swami A. MXene-Derived TiO 2/Starbon Nanocomposite as a Remarkable Electrode Material for Coin-Cell Symmetric Supercapacitor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403552. [PMID: 38963327 DOI: 10.1002/smll.202403552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/20/2024] [Indexed: 07/05/2024]
Abstract
In this study, the synthesis of a MXene (Ti3C2Tx)-derived TiO2/starbon (M-TiO2/Starbon-800 °C) nanocomposite using a facile calcination method is explored. High-temperature exposure transforms layered Ti3C2Tx into rod-like TiO2 and starbon into amorphous carbon. The resulting M-TiO2/Starbon-800 °C nanocomposite exhibits a significantly larger surface area and pore volume compared to its individual components, leading to superior electrochemical performance. In a three-electrode configuration, the nanocomposite achieved a specific capacitance (Csp) of 1352 Fg⁻¹ at 1 Ag⁻¹, while retaining more than 99% of its Csp after 50 000 charge/discharge cycles. Furthermore, when incorporated into a two-electrode symmetric coin cell, it demonstrates a Csp of 115 Fg⁻¹ along with exceptional long cycle life. Moreover, the device shows an energy density (ED) of 51 Whkg-1 and a power density (PD) of 7912 Wkg-1 at 5 Ag-1. The enhanced charge storage is attributed to the formation of a porous structure with a high specific surface area resulting from the interaction between M-TiO2 nanorods and starbon, which facilitates efficient ion penetration.
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Affiliation(s)
- Sanjay D Sutar
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Indrajit Patil
- Institute for Technical Chemistry and Environmental, Chemistry (ITUC) and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich-Schiller-University Jena, Philosophenweg 7a, 07743, Jena, Germany
| | - Haridas Parse
- Department of Materials Science and Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Prateekshita Mukherjee
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Anita Swami
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
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2
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Sun S, Vikrant K, Kim KH, Boukhvalov DW. Titanium dioxide-supported mercury photocatalysts for oxidative removal of hydrogen sulfide from the air using a portable air purification unit. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134089. [PMID: 38579580 DOI: 10.1016/j.jhazmat.2024.134089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/01/2024] [Accepted: 03/18/2024] [Indexed: 04/07/2024]
Abstract
Photocatalytic removal of gaseous hydrogen sulfide (H2S) has been studied through the control of key process variables using a prototype air purifier (AP) fabricated with titanium dioxide (TiO2)-supported mercury. The performance of Hg/TiO2 systems, prepared with different Hg mass proportions over TiO2 (such as 0.1%, 1%, 2%, and 5%), is measured against 5 ppm H2S at 160 L min-1 under UV irradiation. Accordingly, their removal efficiency (RE) values after 360 s are 40.3%, 74.8%, 99.3%, and 99.9%, respectively (relative to 33.5% of AP (TiO2)). An AP with a 2% Hg/TiO2 unit achieves a clean air delivery rate of 32 L min-1 with kinetic reaction rate (r (at 10% RE)) of 0.774 mmol h-1 g-1, quantum yield of 2.19E-02 molecules photon-1, and space-time yield of 1.46E-04 molecules photon-1 mg-1. The superior photocatalytic performance of Hg/TiO2 is supported by superoxide anion and hydroxyl radicals formed in dry air and humid nitrogen (N2) environments, respectively. A density functional theory simulation suggests that the presence of oxygen vacancies should promote the disparities in the electronic structure to subsequently affect the reaction pathways and energetics. The presence of moisture enhances the robust formation of a mercury-OH bond to favorably yield β-mercury sulfide from H2S.
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Affiliation(s)
- Shaoqing Sun
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, the Republic of Korea
| | - Kumar Vikrant
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, the Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, the Republic of Korea.
| | - Danil W Boukhvalov
- College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing 210037, China; Institute of Physics and Technology, Ural Federal University, Mira Street 19, 620002 Yekaterinburg, Russia
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3
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Iesalnieks M, Vanags M, Alsiņa LL, Eglītis R, Grīnberga L, Sherrell PC, Šutka A. Efficient Decoupled Electrolytic Water Splitting in Acid through Pseudocapacitive TiO 2. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2401261. [PMID: 38742588 DOI: 10.1002/advs.202401261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/30/2024] [Indexed: 05/16/2024]
Abstract
Water electrolysis remains a key component in the societal transition to green energy. Membrane electrolyzers are the state-of-the-art technology for water electrolysis, relying on 80 °C operation in highly alkaline electrolytes, which is undesirable for many of the myriad end-use cases for electrolytic water splitting. Herein, an alternative water electrolysis process, decoupled electrolysis, is described which performed in mild acidic conditions with excellent efficiencies. Decoupled electrolysis sequentially performs the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), at the same catalyst. Here, H+ ions generated from the OER are stored through pseudocapacitive (redox) charge storage, and released to drive the HER. Here, decoupled electrolysis is demonstrated using cheap, abundant, TiO2 for the first time. To achieve decoupled acid electrolysis, ultra-small anatase TiO2 particles (4.5 nm diameter) are prepared. These ultra-small TiO2 particles supported on a carbon felt electrode show a highly electrochemical surface area with a capacitance of 375 F g-1. When these electrodes are tested for decoupled water splitting an overall energy efficiency of 52.4% is observed, with excellent stability over 3000 cycles of testing. This technology can provide a viable alternative to membrane electrolyzers-eliminating the need for highly alkaline electrolytes and elevated temperatures.
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Affiliation(s)
- Mairis Iesalnieks
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Street 3/7, Riga, LV-1048, Latvia
| | - Mārtiņš Vanags
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Street 3/7, Riga, LV-1048, Latvia
| | - Linda Laima Alsiņa
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Street 3/7, Riga, LV-1048, Latvia
| | - Raivis Eglītis
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Street 3/7, Riga, LV-1048, Latvia
| | - Līga Grīnberga
- Institute of Solid State Physics, University of Latvia, Riga, LV-1063, Latvia
| | - Peter C Sherrell
- Applied Chemistry & Environmental Science, School of Science, RMIT University, 124 La Trobe St, Melbourne, 3000, Australia
| | - Andris Šutka
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Street 3/7, Riga, LV-1048, Latvia
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Chen YC, Li YT, Lee CL, Kuo YT, Ho CL, Lin WC, Hsu MC, Long X, Chen JS, Li WP, Su CH, Okamoto A, Yeh CS. Electroactive membrane fusion-liposome for increased electron transfer to enhance radiodynamic therapy. NATURE NANOTECHNOLOGY 2023; 18:1492-1501. [PMID: 37537274 DOI: 10.1038/s41565-023-01476-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 06/30/2023] [Indexed: 08/05/2023]
Abstract
Dynamic therapies have potential in cancer treatments but have limitations in efficiency and penetration depth. Here a membrane-integrated liposome (MIL) is created to coat titanium dioxide (TiO2) nanoparticles to enhance electron transfer and increase radical production under low-dose X-ray irradiation. The exoelectrogenic Shewanella oneidensis MR-1 microorganism presents an innate capability for extracellular electron transfer (EET). An EET-mimicking photocatalytic system is created by coating the TiO2 nanoparticles with the MIL, which significantly enhances superoxide anions generation under low-dose (1 Gy) X-ray activation. The c-type cytochromes-constructed electron channel in the membrane mimics electron transfer to surrounding oxygen. Moreover, the hole transport in the valence band is also observed for water oxidation to produce hydroxyl radicals. The TiO2@MIL system is demonstrated against orthotopic liver tumours in vivo.
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Affiliation(s)
- Ying-Chi Chen
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Ting Li
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan
| | - Chin-Lai Lee
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Yen-Ting Kuo
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Lun Ho
- Graduate School of Life and Environmental Science, University of Tsukuba, Ibaraki, Japan
| | - Wei-Che Lin
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Ming-Chien Hsu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Xizi Long
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Tsukuba, Japan
| | - Jia-Sin Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wei-Peng Li
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, Taiwan.
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chia-Hao Su
- Center for General Education, Chang Gung University, Taoyuan, Taiwan.
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan.
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.
| | - Akihiro Okamoto
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Tsukuba, Japan.
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Japan.
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan.
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, Taiwan.
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Hongkailers S, Pattiya A, Hinchiranan N. Hydrodeoxygenation of Oxygenates Derived from Biomass Pyrolysis Using Titanium Dioxide-Supported Cobalt Catalysts. Molecules 2023; 28:7468. [PMID: 38005190 PMCID: PMC10673104 DOI: 10.3390/molecules28227468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/25/2023] [Accepted: 11/05/2023] [Indexed: 11/26/2023] Open
Abstract
Bio-oil upgrading to produce biofuels and chemicals has become an attractive topic over the past decade. However, the design of cost- and performance-effective catalysts for commercial-scale production remains a challenge. Herein, commercial titania (TiO2) was used as the support of cobalt (Co)-based catalysts (Co/TiO2) due to its low cost, high availability, and practicability for commercialization in the future. The Co/TiO2 catalysts were made with two different forms of TiO2 (anatase [TiO2-A] and rutile [TiO2-R]) and comparatively evaluated in the hydrodeoxygenation (HDO) of 4-propylguaicol (4PG), a lignin-derived model compound. Both Co/TiO2 catalysts promoted the HDO of 4PG following a similar pathway, but the Co/TiO2-R catalyst exhibited a higher activity in the early stages of the reaction due to the formation of abundant Ti3+ species, as detected by X-ray photoelectron spectroscopy (XPS) and hydrogen-temperature programed reduction (H2-TPR) analyses. On the other hand, the Co/TiO2-A catalyst possessed a higher acidity that enhanced propylcyclohexane production at prolonged reaction times. In terms of reusability, the Co/TiO2-A catalyst showed a higher stability (less Co leaching) and reusability compared to Co/TiO2-R, as confirmed by transmission electron microscopy (TEM) and inductively coupled plasma optical emission spectroscopy (ICP-OES) analyses. The HDO of the real bio-oil derived from pyrolysis of Leucaena leucocephala revealed that the Co/TiO2-A catalyst could convert high oxygenated aromatics (methoxyphenols, dimethoxyphenols, and benzenediols) to phenols and enhanced the phenols content, hinting at its potential to produce green chemicals from bio-feedstock.
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Affiliation(s)
- Surachet Hongkailers
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Bangkok 10330, Thailand;
| | - Adisak Pattiya
- Bio-Energy and Renewable Resources Research Unit, Faculty of Engineering, Mahasarakham University, Kamriang, Kantharawichai, Maha Sarakham 44150, Thailand;
| | - Napida Hinchiranan
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Bangkok 10330, Thailand;
- Center of Excellence on Petrochemical and Materials Technology (PETROMAT), Chulalongkorn University, 254 Phyathai Road, Bangkok 10330, Thailand
- Center of Excellence in Catalysis for Bioenergy and Renewable Chemicals (CBRC), Chulalongkorn University, 254 Phyathai Road, Bangkok 10330, Thailand
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Kumar A, Hammad R, Pahuja M, Arenal R, Ghosh K, Ghosh S, Narayanan TN. Photo-Rechargeable Li-Ion Batteries using TiS 2 Cathode. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303319. [PMID: 37194967 DOI: 10.1002/smll.202303319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Indexed: 05/18/2023]
Abstract
Photo-rechargeable (solar) battery can be considered as an energy harvesting cum storage system, where it can charge the conventional metal-ion battery using light instead of electricity, without having other parasitic reactions. Here a two-electrode lithium-ion solar battery with multifaceted TiS2 -TiO2 hybrid sheets as cathode. The choice of TiS2 -TiO2 electrode ensures the formation of a type II semiconductor heterostructure while the lateral heterostructure geometry ensures high mass/charge transfer and light interactions with the electrode. TiS2 has a higher lithium binding energy (1.6 eV) than TiO2 (1.03 eV), ensuring the possibilities of higher amount of Li-ion insertion to TiS2 and hence the maximum recovery with the photocharging, as further confirmed by the experiments. Apart from the demonstration of solar solid-state batteries, the charging of lithium-ion full cell with light indicates the formation of lithium intercalated graphite compounds, ensuring the charging of the battery without any other parasitic reactions at the electrolyte or electrode-electrolyte interfaces. Possible mechanisms proposed here for the charging and discharging processes of solar batteries, based on the experimental and theoretical results, indicate the potential of such systems in the forthcoming era of renewable energies.
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Affiliation(s)
- Amar Kumar
- Tata Institute of Fundamental Research-Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad, 500046, India
| | - Raheel Hammad
- Tata Institute of Fundamental Research-Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad, 500046, India
| | - Mansi Pahuja
- Institute of Nano Science & Technology, Mohali, Punjab, 140306, India
| | - Raul Arenal
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, Pedro Cerbuna, 12, Zaragoza, 50009, Spain
- Laboratorio de MicroscopiasAvanzadas (LMA), Universidad de Zaragoza, Calle de Mariano Esquillor, Zaragoza, 50018, Spain
- Fundación ARAID, Zaragoza, 50018, Spain
| | - Kaushik Ghosh
- Institute of Nano Science & Technology, Mohali, Punjab, 140306, India
| | - Soumya Ghosh
- Tata Institute of Fundamental Research-Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad, 500046, India
| | - Tharangattu N Narayanan
- Tata Institute of Fundamental Research-Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad, 500046, India
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7
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Martínez H, Neira J, Amaya ÁA, Páez-Mozo EA, Martínez Ortega F. Selective Photooxidation of Valencene and Thymol with Nano-TiO 2 and O 2 as Oxidant. Molecules 2023; 28:molecules28093868. [PMID: 37175280 PMCID: PMC10180157 DOI: 10.3390/molecules28093868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/30/2023] [Accepted: 04/05/2023] [Indexed: 05/15/2023] Open
Abstract
The selective photocatalytic oxidation with O2 as oxidant of valencene and thymol was evaluated using nanostructured TiO2 under UV-Vis radiation at atmospheric conditions. The effect of the morphology and optical properties of TiO2 nanotubes and aminate nanoparticles was studied. Different scavengers were used to detect the presence of positive holes (h+), electrons (e-), hydroxyl radicals (•OH), and the superoxide radical anion (O2-) during the photooxidation reaction. Superoxide anion radical is the main oxidizing specie formed, which is responsible for the selective formation of nootkatone and thymoquinone using aminated TiO2 nanoparticles under 400 nm radiation.
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Affiliation(s)
- Henry Martínez
- Centro de Investigaciones en Catálisis, CICAT, Universidad Industrial de Santander, Piedecuesta 681011, Colombia
| | - Jane Neira
- Centro de Investigaciones en Catálisis, CICAT, Universidad Industrial de Santander, Piedecuesta 681011, Colombia
| | - Álvaro A Amaya
- Facultad de Ciencias Exactas, Naturales y Agropecuarias, Ciencias Básicas y Aplicadas Para la Sostenibilidad, CIBAS, Universidad de Santander, Bucaramanga 680003, Colombia
| | - Edgar A Páez-Mozo
- Centro de Investigaciones en Catálisis, CICAT, Universidad Industrial de Santander, Piedecuesta 681011, Colombia
| | - Fernando Martínez Ortega
- Centro de Investigaciones en Catálisis, CICAT, Universidad Industrial de Santander, Piedecuesta 681011, Colombia
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Fatimah I, Hidayat H, Citradewi PW, Tamyiz M, Doong RA, Sagadevan S. Hydrothermally synthesized titanium/hydroxyapatite as photoactive and antibacterial biomaterial. Heliyon 2023; 9:e14434. [PMID: 36950579 PMCID: PMC10025910 DOI: 10.1016/j.heliyon.2023.e14434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/13/2023] Open
Abstract
The present work investigated hydrothermal synthesis of titanium/hydroxyapatite (Ti/HA) nanocomposite at varied Ti content. The synthesis was performed by coprecipitation method using CaO, ammonium dihydrogen phosphate and titanium oxide chloride precursor with the additional cetyl trimethyl ammonium chloride as templating agent, followed by hydrothermal treatment at 150 °C. The derived materials were characterized by x-ray diffraction, x-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy analyses. The photocatalytic properties of materials were tested on methyl violet (MV) photocatalytic oxidation, meanwhile the antibacterial testing was performed against Escherichia coli, Staphylococcus aureus, Klebsiella pneumonia, and Streptococcus pyogenes. In addition, cytotoxicity evaluation of the materials as potential biomaterial was also conducted. The results showed that physicochemical character of Ti/HA exhibits exhibit the excellent properties to be photocatalyst along with antibacterial activity. From the detail study of effect of varied titanium content ranging from 5 to 10 %wt., the increasing crystallite size of anatase phase of about 25.81 nm and 38.22 nm for Ti content of 5 and 10 % wt., respectively. In other side, the band gap energy value increases as the increasing Ti content, i.e. the values are 3.08; 3.18; and 3.20 eV for Ti content of 5, 10, 20 % wt., respectively. The band gap energy is correlated with the photocatalytic activity which the highest MV degradation was 96.46% over Ti/HA with 20% wt. of Ti (Ti20/HA). The nanocomposites also express the antibacterial activity with comparable minimum inhibitory concentration (MIC) with other similar Ti/HA nanocomposites. The MIC values of Ti20/HA against E. coli, S. aureus, K. pneumonia, and S. pyogenes are 25; 25; 50 and 50 μg/mL, respectively. In addition, the cytotoxicity test revealed the potency to be a biomimetic material as shown by severe toxicity.
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Affiliation(s)
- Is Fatimah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta, Indonesia
- Corresponding author.
| | - Habibi Hidayat
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta, Indonesia
| | - Putwi Widya Citradewi
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta, Indonesia
| | - Muchammad Tamyiz
- Universitas Nahdlatul Ulama Sidoarjo, Jl. Lingkar Timur KM 5,5 Rangkah Kidul, Kecamatan Sidoarjo, Kabupaten Sidoarjo, Jawa Timur, 61234, Indonesia
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, 101, Sec 2, Kuang Fu Road, Hsinchu, 30013, Taiwan
| | - Ruey-an Doong
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, 101, Sec 2, Kuang Fu Road, Hsinchu, 30013, Taiwan
| | - Suresh Sagadevan
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta, Indonesia
- Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur, 50603, Malaysia
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Sudrajat H, Susanti A, Hartuti S. Reduced TiO 2with prolonged electron lifetime for improving photocatalytic water reduction activity. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:134001. [PMID: 36727439 DOI: 10.1088/1361-648x/acb4d2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
The reduction of anatase TiO2with NaBH4under argon atmosphere at a high temperature resulted in a longer electron lifetime and a larger electron population. The reduced gray anatase sample with disorder layer showed a higher evolution rate of H2(130.2μmol h-1g-1) compared to pristine TiO2(24.1μmol h-1g-1) in the presence of Pt co-catalyst in an aqueous glucose solution under exposure to ultraviolet light (λ⩽ 400 nm). Ti3+and oxygen vacancy defects were proposed to exist in the reduced TiO2. A continuum tail forms above the valence band edge top as a result of these two defects, which contribute to the lattice disorder. This is presumably also the case with the conduction band, which has a continuum tail composed of mid-gap states as a result of the defects. The Ti3+and oxygen vacancy defects operate as shallow traps for photoexcited electrons, thereby preventing recombination. Since the defects are primarily located at the surface, i.e. in the disorder layer, the photoexcited electrons in shallow traps hence become readily available for the reduction of H3O+into H2. The prolonged electron lifetime increases the photoexcited electron population in the reduced TiO2, resulting in enhanced water reduction activity.
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Affiliation(s)
- Hanggara Sudrajat
- Research Center for Quantum Physics, National Research and Innovation Agency (BRIN), Tangerang Selatan 15314, Indonesia
- Collaboration Research Center for Advanced Energy Materials, National Research and Innovation Agency-Institut Teknologi Bandung, Bandung 40132, Indonesia
- Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
| | - Ari Susanti
- Department of Chemical Engineering, State Polytechnic of Malang, Malang 65141, Indonesia
| | - Sri Hartuti
- Department of Environmental Engineering, Padang Institute of Technology, Padang 25173, Indonesia
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10
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Zeng X, Tan Y, Xia L, Zhang Q, Stucky GD. MXene-derived Ti 3C 2-Co-TiO 2 nanoparticle arrays via cation exchange for highly efficient and stable electrocatalytic oxygen evolution. Chem Commun (Camb) 2023; 59:880-883. [PMID: 36562489 DOI: 10.1039/d2cc05911h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A cation exchange strategy is proposed to convert layered Ti3C2-Na-TiO2 MXene nanofibers into Ti3C2-Co-TiO2 MXene nanoparticle arrays with open-layered 3D structure and numerous heterogeneous interfaces, which deliver excellent oxygen evolution reaction (OER) activity.
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Affiliation(s)
- Xiaojun Zeng
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Yunan Tan
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Lei Xia
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Qingqing Zhang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Galen D Stucky
- Department of Chemistry and Biochemistry, University of California Santa Barbara, CA 93106, USA
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11
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Honda M, Ochiai T, Listiani P, Yamaguchi Y, Ichikawa Y. Low-Temperature Synthesis of Cu-Doped Anatase TiO 2 Nanostructures via Liquid Phase Deposition Method for Enhanced Photocatalysis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:639. [PMID: 36676373 PMCID: PMC9862325 DOI: 10.3390/ma16020639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/29/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Titanium dioxide (TiO2) photocatalysis can harness the energy from sunlight, providing a solution to many green- and energy-related problems. In this study, we aimed to produce Cu doped TiO2 (Cu-TiO2) structures at a low temperature (~70 °C) under atmospheric pressure based on liquid phase deposition. The products prepared with Cu nitrate exhibited anatase-phase TiO2 with the presence of Cu, and the particles showed a waxberry-like structure. Changing the Cu nitrate concentration allowed control of the atomic concentration; we confirmed ~1.3 atm.% of Cu ions in the product when we applied 10 mM in the precursor solution. By doping Cu, the light absorption edge shifted to 440 nm (~2.9 eV), and we proved the photocatalytic reaction through action spectral measurement. We observed the decomposition of acetaldehyde into CO2 on Cu-TiO2 photocatalysts, which produced optimized improvements in photocatalytic activity at Cu dopant levels between 0.2 and 0.4 atm.%. This study demonstrates that the liquid phase deposition technique can be used for doping metallic ions into TiO2, which shows promise for preparing novel and unique nanomaterials as visible light photocatalysts.
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Affiliation(s)
- Mitsuhiro Honda
- Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Tsuyoshi Ochiai
- Materials Analysis Group, Kawasaki Technical Support Department, Kanagawa Institute of Industrial Science and TEChnology (KISTEC), Kawasaki 213-0012, Japan
| | - Popy Listiani
- Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Yuma Yamaguchi
- Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Yo Ichikawa
- Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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12
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Synthesis and Photocatalytic Activity for Toluene Removal of CDs/TiO2 - Zeolite Y. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.4.16137.862-871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Hydrothermally synthesized carbon nanodots (CDs) were impregnated on TiO2. The product (CDs/TiO2) was mechanically mixed with zeolite Y for application in toluene photocatalytic oxidation reaction under UV radiation. Material properties of the samples were investigated by different methods. Toluene vapor was chosen as a typical volatile organic compound to investigate the performance of CDs/TiO2 – zeolite Y photocatalyst when these technological parameters were changed: toluene concentration, gas flow rate, humidity and UV light intensity. In each reaction, only one parameter was changed and the remaining conditions were fixed. The toluene concentrations at the beginning and the end of each reaction were analyzed with the use of gas chromatography (GC). The results of different reaction conditions show the trends for toluene treatment of the CDs/TiO2 – zeolite Y catalyst, thereby providing specific explanations for these trends. The experiments also show that toluene removal is highest when the toluene concentration in the inlet gas is 314 ppmv, the flow rate is 3 L/h, the humidity is 60%, and the catalyst (CDs/TiO2 – zeolite Y composite with 70% zeolite in weight) is illuminated by 4 UV lamps. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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13
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Integrated Adsorption-Photocatalytic Decontamination of Oxytetracycline from Wastewater Using S-Doped TiO2/WS2/Calcium Alginate Beads. Catalysts 2022. [DOI: 10.3390/catal12121676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Integrated wastewater treatment processes are needed due to the inefficient removal of emerging pharmaceuticals by single methods. Herein, an adsorbent-photocatalyst integrated material was fabricated by coupling calcium alginate with sulfur-doped TiO2/tungsten disulfide (S-TiO2/WS2/alginate beads) for the removal of oxytetracycline (OTC) from aqueous solution by an integrated adsorption-photocatalysis process. The semiconductor S-TiO2/WS2 hybrid photocatalyst was synthesized with a hydrothermal method, while the integrated adsorbent-photocatalyst S-TiO2/WS2/alginate beads were synthesized by blending S-TiO2/WS2 with sodium alginate using calcium chloride as a precipitating agent. The physicochemical characteristics of S-TiO2/WS2/alginate beads were analyzed using X-ray diffraction , scanning electron microscopy, elemental mapping, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. The integrated adsorption-photocatalysis process showed enhanced removal from 92.5 to 72%, with a rise in the OTC concentration from 10 to 75 mg/L respectively. The results demonstrated that the adsorption of OTC onto S-TiO2/WS2/alginate beads followed the Elovich kinetic model and Redlich–Peterson isotherm models. The formations of H-bonds, cation bridge bonding, and n-π electron donor-acceptor forces were involved in the adsorption of OCT onto S-TiO2/WS2/alginate beads. In the integrated adsorption-photocatalysis, surface-adsorbed OTC molecules were readily decomposed by the photogenerated active radical species (h⁺, O2•−, and HO•). The persulfate addition to the OTC solution further increased the photocatalysis efficacy due to the formation of additional oxidizing species (SO4•⁻, SO4⁻). Moreover, S-TiO2/WS2/alginate beads showed favorable efficiency and sustainability in OTC removal, approaching 78.6% after five cycles. This integrated adsorption-photocatalysis process offered significant insight into improving efficiency and reusability in water treatment.
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14
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Underwood TM, Robinson RS. Adducing Knowledge Capabilities of Instrumental Techniques Through the Exploration of Heterostructures' Modification Methods. Chemphyschem 2022; 23:e202200241. [PMID: 35965256 PMCID: PMC9804862 DOI: 10.1002/cphc.202200241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/25/2022] [Indexed: 01/09/2023]
Abstract
The ongoing evolution of technology has facilitated the global research community to rapidly escalate the constant development of novel advancements in science. At the forefront of such achievements in the field of photocatalysis is the utilisation, and in oftentimes, the adaptation of modern instrumentation to understand photo-physical properties of complex heterostructures. For example, coupling in-situ X-ray Raman scattering spectroscopy for real-time degradation of catalytic materials.
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Affiliation(s)
- Timothy M. Underwood
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPrivate Bag X01, ScottsvillePietermaritzburg3209South Africa
| | - Ross S. Robinson
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPrivate Bag X01, ScottsvillePietermaritzburg3209South Africa
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15
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Jekal S, Kim J, Kim DH, Noh J, Kim MJ, Kim HY, Kim MS, Oh WC, Yoon CM. Synthesis of LiDAR-Detectable True Black Core/Shell Nanomaterial and Its Practical Use in LiDAR Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3689. [PMID: 36296878 PMCID: PMC9610704 DOI: 10.3390/nano12203689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/12/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Light detection and ranging (LiDAR) sensors utilize a near-infrared (NIR) laser with a wavelength of 905 nm. However, LiDAR sensors have weakness in detecting black or dark-tone materials with light-absorbing properties. In this study, SiO2/black TiO2 core/shell nanoparticles (SBT CSNs) were designed as LiDAR-detectable black materials. The SBT CSNs, with sizes of 140, 170, and 200 nm, were fabricated by a series of Stöber, TTIP sol-gel, and modified NaBH4 reduction methods. These SBT CSNs are detectable by a LiDAR sensor and, owing to their core/shell structure with intrapores on the shell (ca. 2−6 nm), they can effectively function as both color and NIR-reflective materials. Moreover, the LiDAR-detectable SBT CSNs exhibited high NIR reflectance (28.2 R%) in a monolayer system and true blackness (L* < 20), along with ecofriendliness and hydrophilicity, making them highly suitable for use in autonomous vehicles.
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Affiliation(s)
- Suk Jekal
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
| | - Jiwon Kim
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
| | - Dong-Hyun Kim
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
| | - Jungchul Noh
- McKetta Department of Chemical Engineering and Texas Material Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Min-Jeong Kim
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
| | - Ha-Yeong Kim
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
| | - Min-Sang Kim
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
| | - Won-Chun Oh
- Department of Advanced Materials Science and Engineering, Hanseo University, Seosan-si 31962, Korea
| | - Chang-Min Yoon
- Department of Chemical and Biological Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Korea
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16
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Kumar R, Oves M, Ansari MO, Taleb MA, Baraka MAEF, Alghamdi MA, Makishah NHA. Biopolymeric Ni 3S 4/Ag 2S/TiO 2/Calcium Alginate Aerogel for the Decontamination of Pharmaceutical Drug and Microbial Pollutants from Wastewater. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3642. [PMID: 36296832 PMCID: PMC9609712 DOI: 10.3390/nano12203642] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/04/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
The ubiquitous presence of pharmaceutical drugs and microbes in the water is leading to the development of drug resistant microbes. Therefore, efficient materials that can remove or inactivate the drug and microbe contaminants are required. In this work, nickel sulfide/calcium alginate (Ni3S4/CA), silver sulfide/calcium alginate (Ag2S/CA), modified titanium dioxide/calcium alginate (TiO2/CA), and Ni3S4/Ag2S/TiO2/calcium alginate (Ni3S4/Ag2S/TiO2/CA) aerogels have been synthesized for the removal of the oxytetracycline (OTC) drug and microbial contaminants from real beverage industry wastewater. The results revealed that Ni3S4/Ag2S/TiO2/CA aerogel is highly efficient for OTC adsorption and inactivation of microbes compared to Ni3S4/CA, Ag2S/CA and TiO2/CA aerogels. The OTC adsorption depends greatly on the solution pH, and optimum OTC removal was observed at pH 6 in its zwitterionic (OTC±) form. The formation of H-bonding and n-π electron donor-acceptors is possible to a considerable extent due to the presence of the double bond benzene ring, oxygen and nitrogen, sulfur-containing functional groups on the OTC molecules, and the Ni3S4/Ag2S/TiO2/CA aerogel. Based on the statistical analysis, root-mean-square deviation (RMSD), chi square (χ2) values, and higher correlation coefficient (R2) values, the Redlich−Peterson isotherm model and Elovich kinetic model are most suited to modelling the OTC adsorption onto Ni3S4/Ag2S/TiO2/CA. The prepared aerogels’ excellent antimicrobial activity is observed in the dark and with solar light irradiation. The zone of inhibition analysis revealed that the antimicrobial activity of the aerogels is in the following order: Ni3S4/Ag2S/TiO2/CA > TiO2/CA > Ag2S/CA > Ni3S4/CA, respectively. Moreover, the antimicrobial results demonstrated that reactive oxygen species, electrons, and active radical species are responsible for growth inhibition and killing of the microbes. These results indicated that Ni3S4/Ag2S/TiO2/CA aerogel is highly efficient in decontaminating pollutants from wastewater.
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Affiliation(s)
- Rajeev Kumar
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammad Oves
- Central of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | | | - Md. Abu Taleb
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohamed Abou El-Fetouh Baraka
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mansour A. Alghamdi
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Naief Hamoud Al Makishah
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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17
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Mubarak S, Dhamodharan D, Byun HS, Arya S, Pattanayak DK. Effective photoelectrocatalytic reduction of CO2 to formic acid using controllably annealed TiO2 nanoparticles derived from porous structured Ti foil. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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18
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Hosseinzadeh M, Mozaffari SA, Ebrahimi F. Porous 3D-graphene functionalized with MnO2 nanospheres and NiO nanoparticles as highly efficient electrodes for asymmetric capacitive deionization: Evaluation by impedance-derived capacitance spectroscopy. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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19
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Van Cuong L, Lam Tuan Cuong D, Tran Trung Nghia L, Khac Hung L, Thai Hoang N, Tan Nhiem L, Trong Liem Chau P, Thanh Phong M, Huu Hieu N. Effect of reducing agents on co-precipitation synthesis of titanium dioxide/reduced graphene oxide composite materials for upgrading the performance of dye-sensitized solar cells. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Efficient photoelectrocatalytic conversion of CO2 to formic acid using Ag-TiO2 nanoparticles formed on the surface of nanoporous structured Ti foil. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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21
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Popov AA, Tikhonowski GV, Shakhov PV, Popova-Kuznetsova EA, Tselikov GI, Romanov RI, Markeev AM, Klimentov SM, Kabashin AV. Synthesis of Titanium Nitride Nanoparticles by Pulsed Laser Ablation in Different Aqueous and Organic Solutions. NANOMATERIALS 2022; 12:nano12101672. [PMID: 35630892 PMCID: PMC9147655 DOI: 10.3390/nano12101672] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 12/04/2022]
Abstract
Owing to a strong photothermal response in the near-IR spectral range and very low toxicity, titanium nitride (TiN) nanoparticles (NPs) synthesized by pulsed laser ablation in liquids (PLAL) present a novel appealing object for photo-induced therapy of cancer, but the properties of these NPs still require detailed investigation. Here, we have elaborated methods of femtosecond laser ablation from the TiN target in a variety of liquid solutions, including acetonitrile, dimethylformamide, acetone, water, and H2O2, to synthesize TiN NPs and clarify the effect of liquid type on the composition and properties of the formed NPs. The ablation in all solvents led to the formation of spherical NPs with a mean size depending on the liquid type, while the composition of the NPs ranged from partly oxidized TiN to almost pure TiO2, which conditioned variations of plasmonic peak in the region of relative tissue transparency (670–700 nm). The degree of NP oxidation depended on the solvent, with much stronger oxidation for NPs prepared in aqueous solutions (especially in H2O2), while the ablation in organic solvents resulted in a partial formation of titanium carbides as by-products. The obtained results contribute to better understanding of the processes in reactive PLAL and can be used to design TiN NPs with desired properties for biomedical applications.
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Affiliation(s)
- Anton A. Popov
- National Research Nuclear University MEPhI, 115409 Moscow, Russia; (G.V.T.); (P.V.S.); (E.A.P.-K.); (R.I.R.); (S.M.K.)
- Correspondence: (A.A.P.); (A.V.K.)
| | - Gleb V. Tikhonowski
- National Research Nuclear University MEPhI, 115409 Moscow, Russia; (G.V.T.); (P.V.S.); (E.A.P.-K.); (R.I.R.); (S.M.K.)
| | - Pavel V. Shakhov
- National Research Nuclear University MEPhI, 115409 Moscow, Russia; (G.V.T.); (P.V.S.); (E.A.P.-K.); (R.I.R.); (S.M.K.)
| | - Elena A. Popova-Kuznetsova
- National Research Nuclear University MEPhI, 115409 Moscow, Russia; (G.V.T.); (P.V.S.); (E.A.P.-K.); (R.I.R.); (S.M.K.)
| | - Gleb I. Tselikov
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia; (G.I.T.); (A.M.M.)
| | - Roman I. Romanov
- National Research Nuclear University MEPhI, 115409 Moscow, Russia; (G.V.T.); (P.V.S.); (E.A.P.-K.); (R.I.R.); (S.M.K.)
| | - Andrey M. Markeev
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia; (G.I.T.); (A.M.M.)
| | - Sergey M. Klimentov
- National Research Nuclear University MEPhI, 115409 Moscow, Russia; (G.V.T.); (P.V.S.); (E.A.P.-K.); (R.I.R.); (S.M.K.)
| | - Andrei V. Kabashin
- Laboratory LP3, Campus de Luminy, Aix-Marseille University, CNRS, 13288 Marseille, France
- Correspondence: (A.A.P.); (A.V.K.)
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22
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Mesoporous Zn–Ti Mixed Oxide Nanostructure: A New Bifunctional Catalyst for Partial Oxidation and Bezylation Reactions. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02347-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Han J, Jang EK, Ki MR, Son RG, Kim S, Choe Y, Pack SP, Chung S. pH-responsive phototherapeutic poly(acrylic acid)-calcium phosphate passivated TiO2 nanoparticle-based drug delivery system for cancer treatment applications. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Eran TN, Galli F, Mazzoni F, Longhi M, Grainca A, Patience G, Pirola C. Metallosilicates as an Iron Support to catalyze Fischer Tropsch Synthesis. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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25
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Matias ML, Pimentel A, Reis-Machado AS, Rodrigues J, Deuermeier J, Fortunato E, Martins R, Nunes D. Enhanced Fe-TiO 2 Solar Photocatalysts on Porous Platforms for Water Purification. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1005. [PMID: 35335818 PMCID: PMC8955547 DOI: 10.3390/nano12061005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 02/04/2023]
Abstract
In this study, polyethylene glycol-modified titanium dioxide (PEG-modified TiO2) nanopowders were prepared using a fast solvothermal method under microwave irradiation, and without any further calcination processes. These nanopowders were further impregnated on porous polymeric platforms by drop-casting. The effect of adding iron with different molar ratios (1, 2, and 5%) of iron precursor was investigated. The characterization of the produced materials was carried out by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Optical characterization of all the materials was also carried out. SEM showed that pure TiO2 and Fe-TiO2 nanostructures presented similar nanosized and spherical particles, which uniformly covered the substrates. From XRD, pure TiO2 anatase was obtained for all nanopowders produced, which was further confirmed by Raman spectroscopy on the impregnated substrates. XPS and UV-VIS absorption spectroscopy emission spectra revealed that the presence of Fe ions on the Fe-TiO2 nanostructures led to the introduction of new intermediate energy levels, as well as defects that contributed to an enhancement in the photocatalytic performance. The photocatalytic results under solar radiation demonstrated increased photocatalytic activity in the presence of the 5% Fe-TiO2 nanostructures (Rhodamine B degradation of 85% after 3.5 h, compared to 74% with pure TiO2 for the same exposure time). The photodegradation rate of RhB dye with the Fe-TiO2 substrate was 1.5-times faster than pure TiO2. Reusability tests were also performed. The approach developed in this work originated novel functionalized photocatalytic platforms, which were revealed to be promising for the removal of organic dyes from wastewater.
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Affiliation(s)
- Maria Leonor Matias
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal; (M.L.M.); (A.P.); (J.D.); (E.F.)
| | - Ana Pimentel
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal; (M.L.M.); (A.P.); (J.D.); (E.F.)
| | - Ana S. Reis-Machado
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal;
| | - Joana Rodrigues
- Physics Department & I3N, Aveiro University, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;
| | - Jonas Deuermeier
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal; (M.L.M.); (A.P.); (J.D.); (E.F.)
| | - Elvira Fortunato
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal; (M.L.M.); (A.P.); (J.D.); (E.F.)
| | - Rodrigo Martins
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal; (M.L.M.); (A.P.); (J.D.); (E.F.)
| | - Daniela Nunes
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal; (M.L.M.); (A.P.); (J.D.); (E.F.)
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26
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Urda A, Radu T, Socaci C, Floare-Avram V, Cosma D, Rosu MC, Coros M, Pruneanu S, Pogacean F. Evaluation of N-doped graphene role in the visible-light driven photodegradation of sulfamethoxazole by a TiO2-silver-graphene composite. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Doabi EH, Elmi F, Elmi MM. Facile and novel synthesis of nitrogen doped TiO2/Acid soluble collagen-polyvinyl pyrrolidone (ASC-PVP) hybrid nanocomposite for rapid and effective photodegradation of naphthalene from water under visible light irradiation. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113677] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Abulikemu M, Tietze ML, Waiprasoet S, Pattanasattayavong P, E.A. Tabrizi B, D’Elia V, Del Gobbo S, Jabbour GE. Microwave-Assisted Non-aqueous and Low-Temperature Synthesis of Titania and Niobium-Doped Titania Nanocrystals and Their Application in Halide Perovskite Solar Cells as Electron Transport Layers. ACS OMEGA 2022; 7:6616-6626. [PMID: 35252657 PMCID: PMC8892854 DOI: 10.1021/acsomega.1c05970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
Undoped and Nb-doped TiO2 nanocrystals are prepared by a microwave-assisted non-aqueous sol-gel method based on a slow alkyl chloride elimination reaction between metal chlorides and benzyl alcohol. Sub-4 nm nanoparticles are grown under microwave irradiation at 80 °C in only 3 h with precise control of growth parameters and yield. The obtained nanocrystals could be conveniently used to cast compact TiO2 or Nb-doped TiO2 electron transport layers for application in formamidinium lead iodide-based photovoltaic devices. Niobium doping is found to improve the cell performance by increasing the conductivity and mobility of the electron transport layer. At the same time, a measurable decrease in parasitic light absorption in the low wavelength portion of the spectrum was observed.
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Affiliation(s)
- Mutalifu Abulikemu
- School
of Electrical Engineering and Computer Science, University of Ottawa, 800 King Edward Ave., Ottawa, Ontario, K1N 6N5 Canada
| | - Max Lutz Tietze
- Centre
for Membrane Separations, Adsorption, Catalysis, and Spectroscopy, KU Leuven—University of Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Saran Waiprasoet
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Pichaya Pattanasattayavong
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Bita E.A. Tabrizi
- School
of Electrical Engineering and Computer Science, University of Ottawa, 800 King Edward Ave., Ottawa, Ontario, K1N 6N5 Canada
| | - Valerio D’Elia
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Silvano Del Gobbo
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Ghassan E. Jabbour
- School
of Electrical Engineering and Computer Science, University of Ottawa, 800 King Edward Ave., Ottawa, Ontario, K1N 6N5 Canada
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Herath A, Navarathna C, Warren S, Perez F, Pittman CU, Mlsna TE. Iron/titanium oxide-biochar (Fe 2TiO 5/BC): A versatile adsorbent/photocatalyst for aqueous Cr(VI), Pb 2+, F - and methylene blue. J Colloid Interface Sci 2022; 614:603-616. [PMID: 35123214 DOI: 10.1016/j.jcis.2022.01.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/22/2021] [Accepted: 01/10/2022] [Indexed: 12/19/2022]
Abstract
This is the first report of the metal Fe-Ti oxide/biochar (Fe2TiO5/BC) composite for simultaneous removal of aqueous Pb2+, Cr6+, F- and methylene blue (MB). Primary Fe2TiO5 nano particles and aggregates were dispersed on a high surface area Douglas fir BC (∼700 m2/g) by a simple chemical co-precipitation method using FeCl3 and TiO(acac)2 salts treated by base and heated to 80 °C. This was followed by calcination at 500 °C. This method previously was used without BC to make the neat mixed oxide Fe2TiO5, exhibiting a lower energy band gap than TiO2. Adsorption of Cr(VI), Pb(II), fluoride, and MB on Fe2TiO5/BC was studied as a function of pH, equilibrium time, initial adsorbate concentration, and temperature. Adsorption isotherm studies were conducted at 5, 25, and 45 ℃ and kinetics for all four adsorbates followed the pseudo second order model. Maximum Langmuir adsorption capacities for Pb2+, Cr6+, F- and MB at their initial pH values were 141 (pH 2), 200 (pH 5), 36 (pH 6) and 229 (pH 6) mg/g at 45 ℃ and 114, 180, 26 and 210 mg/g at 25 ℃, respectively. MB was removed from the water on Fe2TiO5/BC by synergistic adsorption and photocatalytic degradation at pH 3 and 6 under UV (365 nm) light irradiation. Cr6+, Pb2+, F-, and MB each exhibited excellent removal capacities in the presence of eight different competitive ions in simulated water samples. The removal mechanisms on Fe2TiO5/BC and various competitive ion interactions were proposed. Some iron ion leaching at pH 3 catalyzed Photo-Fenton destruction of MB. Fe2TiO5, BC, and Fe2TiO5/BC bandgaps were studied to help understand photocatalysis of MB and to advance supported metal oxide photodegradation using smaller energy band gaps than the larger bandgap of TiO2 for water treatment. A long range goal is to photocatalytically destroy some sorbates with adsorbents to avoid the need for regeneration steps.
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Affiliation(s)
- Amali Herath
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Chanaka Navarathna
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Shannon Warren
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Felio Perez
- Material Science Lab, Integrated Microscopy Center, University of Memphis, Memphis, TN 38152, USA
| | - Charles U Pittman
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Todd E Mlsna
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA.
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30
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Lopes DS, Vono LLR, Miranda EV, Ando RA, Corio P. Inhibition of p‐nitrothiophenol catalytic hydrogenation on Ag‐containing AgAu/Pd/TiO2 plasmonic catalysts probed in situ by SERS. ChemCatChem 2022. [DOI: 10.1002/cctc.202101943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Douglas S. Lopes
- University of Sao Paulo: Universidade de Sao Paulo Chemistry Av. Prof. Lineu Prestes, 748 005508900 São Paulo BRAZIL
| | - Lucas L. R. Vono
- University of Sao Paulo: Universidade de Sao Paulo Chemistry BRAZIL
| | - Ester V. Miranda
- University of Sao Paulo: Universidade de Sao Paulo Chemistry BRAZIL
| | - Rômulo A. Ando
- University of Sao Paulo: Universidade de Sao Paulo Chemistry BRAZIL
| | - Paola Corio
- University of Sao Paulo Institute of Chemistry Av. Prof. Lineu Prestes, 748 05508000 Sao Paulo BRAZIL
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31
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Yan C, Wang Y, Zhu L, Jiang J, Hu Y, Cui Q, Lou Z, Hou Y, Teng F. Metal oxide nanoparticle-modified ITO electrode for high-performance solution-processed perovskite photodetectors. RSC Adv 2022; 12:5638-5647. [PMID: 35425538 PMCID: PMC8981377 DOI: 10.1039/d1ra08764a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/30/2022] [Indexed: 11/21/2022] Open
Abstract
Low dark current density plays a key role in determining the overall performance of perovskite photodetectors (PPDs). To achieve this goal, a hole transport layer (HTL) on the ITO side and a hole blocking layer (HBL) on the metal electrode side are commonly introduced in PPDs. Unlike traditional approaches, we realized a high-performance solution-processed broadband PPD using metal oxide (MO) nanoparticles (NPs) as the HBL on the ITO electrode and PC61BM as another HBL on the metal electrode side to reduce the device dark current. The PPDs based on TiO2 and SnO2 NP-modified layers show similar device performances at −0.5 V: a greater than 105 on/off ratio; over 100 dB linear dynamic range (LDR) under different visible light illumination; around 0.2 A W−1 responsivity (R); greater than 1012 jones detectivity (D*); and ∼20 μs rise time of the device. The MO NP interfacial layer can significantly suppress charge injection in the dark, while the accumulated photogenerated charges at the interface between the MO layer and the perovskite layer introduce band bending, leading to dramatically increased current under illumination. Therefore, the dark current density of the devices is significantly reduced and the optical gain is drastically enhanced. However, after UV illumination, the dark current of the TiO2 device dramatically increases while the dark current of the SnO2 device can stay the same as before since the UV illumination-induced conductivity and barrier height changes in the TiO2 layer cannot recover after removing the UV irradiation. These results indicate that the TiO2 NP layer is suitable for making a vis-NIR photodetector, while the SnO2 NP layer is a good candidate for UV-vis-NIR photodetectors. The facile solution-processed high-performance perovskite photodetector using MO NP-modified ITO is highly compatible with low cost, flexible, and large-area electronics. PPDs based on TiO2 and SnO2 NP layers show similar significantly low dark current density. Due to the UV induced conductivity and barrier height changes in the TiO2 device after UV illumination the dark current of the device increases, while the SnO2 device remains the same.![]()
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Affiliation(s)
- Chao Yan
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Yue Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Lijie Zhu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Jingzan Jiang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Yufeng Hu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Qiuhong Cui
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Zhidong Lou
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Yanbing Hou
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Feng Teng
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China
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32
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Sudrajat H, Hartuti S, Babel S. Mechanistic understanding of the increased photoactivity of TiO 2 nanosheets upon tantalum doping. Phys Chem Chem Phys 2021; 24:995-1006. [PMID: 34918718 DOI: 10.1039/d1cp03907e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Anatase TiO2 is doped with Ta cations through a hydrothermal route. Based on X-ray photoelectron spectroscopy and X-ray absorption near-edge structure spectroscopy, the Ta dopants exist in the 5+-oxidation state. The oxidation state is insensitive to the Ta loading amount. Extended X-ray absorption fine structure spectroscopy confirms that the local structure around Ta cations is not identical between the Ta-doped samples. The Ta-O distance monotonically increases with the Ta loading amount due to a gradually expanding lattice. The Ta-doped samples show higher activity than pristine TiO2 for photomineralizing recalcitrant organics. The enhanced photocatalytic activity is proposed to be due to an enhanced population of photoexcited electrons, as probed using light-induced IR absorption spectroscopy, and an extended electron lifetime, as probed using time-resolved microwave conductivity, which are associated with the formation of Ti3+ defect states acting as shallow electron traps. The maximum photocatalytic activity is observed for TiO2 doped with 2 mol% of Ta, which shows enhancement of mineralization efficiency (about 3 times) and enhancement of electron population (up to 20 times), as compared to those of pristine TiO2. The fundamental question of why a proper metal doping into TiO2 increases photocatalytic activity is discussed in this study.
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Affiliation(s)
- Hanggara Sudrajat
- Department of Chemical Engineering, Faculty of Engineering, Universitas Jember, Jember, Indonesia. .,Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam.,Faculty of Applied Sciences, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Sri Hartuti
- Department of Environmental and Renewable Energy Systems, School of Engineering, Gifu University, Gifu, Japan
| | - Sandhya Babel
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, Thailand
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33
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Vasudevan S, Srinivasan P, Neelakantan P, Rayappan JBB, Solomon AP. Photoluminescence-Based Bioassay With Cysteamine-Capped TiO 2 Nanoparticles for the Selective Recognition of N-Acyl Homoserine Lactones. Front Bioeng Biotechnol 2021; 9:750933. [PMID: 34926417 PMCID: PMC8678280 DOI: 10.3389/fbioe.2021.750933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/08/2021] [Indexed: 11/13/2022] Open
Abstract
Currently available diagnostic procedures for infections are laborious and time-consuming, resulting in a substantial financial burden by increasing morbidity, increased costs of hospitalization, and mortality. Therefore, innovative approaches to design diagnostic biomarkers are imperative to assist in the rapid and sensitive diagnosis of microbial infections. Acyl homoserine lactones (AHLs) are ubiquitous bacterial signaling molecules that are found to be significantly upregulated in infected sites. In this pioneering work, we have developed a simple photoluminescence-based assay using cysteamine-capped titanium oxide (TiO2) nanoparticles for AHL detection. The PL intensity variation of the oxygen defect state of TiO2 was used for the biosensing measurements. The bioassays were validated using two well-studied AHL molecules (C4-HSL and 3-oxo-C12 HSL) of an important human pathogen, Pseudomonas aeruginosa. The developed system has a maximum relative response of 98%. Furthermore, the efficacy of the system in simulated host urine using an artificial urine medium showed a linear detection range of 10-160 nM. Also, we confirmed the relative response and specificity of the system in detecting AHLs produced by P. aeruginosa in a temporal manner.
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Affiliation(s)
- Sahana Vasudevan
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Parthasarathy Srinivasan
- Nanosensors Laboratory, School of Electrical & Electronics Engineering, Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), SASTRA Deemed University, Thanjavur, India
- Department of Electronics and Communication Engineering, Amrita School of Engineering, AMRITA Vishwa Vidyapeetham Chennai Campus, Chennai, India
| | - Prasanna Neelakantan
- Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong KongSAR, China
| | - John Bosco Balaguru Rayappan
- Nanosensors Laboratory, School of Electrical & Electronics Engineering, Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), SASTRA Deemed University, Thanjavur, India
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
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34
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Partial photoelectrocatalytic oxidation of 3-pyridinemethanol by Pt, Au and Pd loaded TiO2 nanotubes on Ti plate. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Shahvaranfard F, Li N, Hosseinpour S, Hejazi S, Zhang K, Altomare M, Schmuki P, Brabec CJ. Comparison of the sputtered TiO
2
anatase and rutile thin films as electron transporting layers in perovskite solar cells. NANO SELECT 2021. [DOI: 10.1002/nano.202100306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Fahimeh Shahvaranfard
- Department of Materials Science and Engineering Institute of Materials for Electronics and Energy Technology (i‐MEET) University of Erlangen‐Nuremberg Erlangen Germany
| | - Ning Li
- Department of Materials Science and Engineering Institute of Materials for Electronics and Energy Technology (i‐MEET) University of Erlangen‐Nuremberg Erlangen Germany
- Helmholtz Institute Erlangen‐Nürnberg for Renewable Energy (HI ERN) Erlangen Germany
| | - Saman Hosseinpour
- Institute of Particle Technology (LFG) Friedrich‐Alexander‐Universität‐Erlangen‐Nürnberg (FAU) Erlangen Germany
| | - Seyedsina Hejazi
- Department of Materials Science and Engineering Institute for Surface Science and Corrosion WW4‐LKO University of Erlangen‐Nuremberg Erlangen Germany
| | - Kaicheng Zhang
- Department of Materials Science and Engineering Institute of Materials for Electronics and Energy Technology (i‐MEET) University of Erlangen‐Nuremberg Erlangen Germany
| | - Marco Altomare
- Department of Materials Science and Engineering Institute for Surface Science and Corrosion WW4‐LKO University of Erlangen‐Nuremberg Erlangen Germany
| | - Patrik Schmuki
- Department of Materials Science and Engineering Institute for Surface Science and Corrosion WW4‐LKO University of Erlangen‐Nuremberg Erlangen Germany
| | - Christoph J. Brabec
- Department of Materials Science and Engineering Institute of Materials for Electronics and Energy Technology (i‐MEET) University of Erlangen‐Nuremberg Erlangen Germany
- Helmholtz Institute Erlangen‐Nürnberg for Renewable Energy (HI ERN) Erlangen Germany
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36
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PEC water splitting using mats of calcined TiO2 rutile nanorods photosensitized by a thin layer of Ni-benzene dicarboxylic acid MOF. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139014] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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37
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Jun SE, Hong SP, Choi S, Kim C, Ji SG, Park IJ, Lee SA, Yang JW, Lee TH, Sohn W, Kim JY, Jang HW. Boosting Unassisted Alkaline Solar Water Splitting Using Silicon Photocathode with TiO 2 Nanorods Decorated by Edge-Rich MoS 2 Nanoplates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103457. [PMID: 34453489 DOI: 10.1002/smll.202103457] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/23/2021] [Indexed: 06/13/2023]
Abstract
To construct a highly efficient photoelectrochemical tandem device with silicon photocathode operating in alkaline conditions, it is desirable to develop stable and active catalysts which enable the photocathode to reliably perform under an alkaline environment. With nanostructured passivation layer and edge-exposed transition metal disulfides, silicon photocathode provides new opportunities for achieving unbiased alkaline solar water splitting. Here, the TiO2 nanorod arrays decorated by edge-rich MoS2 nanoplates are elaborately synthesized and deposited on p-Si. The vertically aligned TiO2 nanorods fully stabilize the Si surface and improve anti-reflectance. Moreover, MoS2 nanoplates with exposed edge sites provide catalytically active regions resulting in the kinetically favored hydrogen evolution under an alkaline environment. Interfacial energy band bending between p-Si and catalyst layers facilitates the transport of photogenerated electrons under steady-state illumination. Consequently, the MoS2 nanoplates/TiO2 nanorods/p-Si photocathode exhibits significantly improved photoelectrochemical-hydrogen evolution reaction (PEC-HER) performance in alkaline media with a high photocurrent density of 10 mA cm-2 at 0 V versus RHE and high stability. By integrating rationally designed photocathode with earth-abundant Fe60 (NiCo)30 Cr10 anode and perovskite/Si tandem photovoltaic cell, an unassisted alkaline solar water splitting is accomplished with a current density of 5.4 mA cm-2 corresponding to 6.6% solar-to-hydrogen efficiency, which is the highest among p-Si photocathodes.
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Affiliation(s)
- Sang Eon Jun
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung-Pyo Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokhoon Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Changyeon Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Su Geun Ji
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ik Jae Park
- Department of Applied Physics, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Sol A Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woonbae Sohn
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Young Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Research Institute of Advanced Materials (RIAM), Institute of Engineering Research, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 16229, Republic of Korea
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38
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Yasutake H, Islam MS, Rahman MA, Yagyu J, Fukuda M, Shudo Y, Kuroiwa K, Sekine Y, Hayami S. High Proton Conductivity from Titanium Oxide Nanosheets and Their Variation Based on Crystal Phase. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210139] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroki Yasutake
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Md. Saidul Islam
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Mohammad Atiqur Rahman
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Junya Yagyu
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masahiro Fukuda
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yuta Shudo
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Keita Kuroiwa
- Department of Nanoscience, Faculty of Engineering, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0082, Japan
| | - Yoshihiro Sekine
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Priority Organization for Innovation and Excellence, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555 Japan
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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39
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Tantalum-Doped TiO 2 Prepared by Atomic Layer Deposition and Its Application in Perovskite Solar Cells. NANOMATERIALS 2021; 11:nano11061504. [PMID: 34200248 PMCID: PMC8226548 DOI: 10.3390/nano11061504] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022]
Abstract
Tantalum (Ta)-doped titanium oxide (TiO2) thin films are grown by plasma enhanced atomic layer deposition (PEALD), and used as both an electron transport layer and hole blocking compact layer of perovskite solar cells. The metal precursors of tantalum ethoxide and titanium isopropoxide are simultaneously injected into the deposition chamber. The Ta content is controlled by the temperature of the metal precursors. The experimental results show that the Ta incorporation introduces oxygen vacancies defects, accompanied by the reduced crystallinity and optical band gap. The PEALD Ta-doped films show a resistivity three orders of magnitude lower than undoped TiO2, even at a low Ta content (0.8–0.95 at.%). The ultraviolet photoelectron spectroscopy spectra reveal that Ta incorporation leads to a down shift of valance band and conduction positions, and this is helpful for the applications involving band alignment engineering. Finally, the perovskite solar cell with Ta-doped TiO2 electron transport layer demonstrates significantly improved fill factor and conversion efficiency as compared to that with the undoped TiO2 layer.
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40
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Paul P, Hafiz MG, Schmitt P, Patzig C, Otto F, Fritz T, Tünnermann A, Szeghalmi A. Optical bandgap control in Al 2O 3/TiO 2 heterostructures by plasma enhanced atomic layer deposition: Toward quantizing structures and tailored binary oxides. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119508. [PMID: 33571739 DOI: 10.1016/j.saa.2021.119508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Atomically thin heterostructures and superlattices are promising candidates for various optoelectronic and photonic applications. Different combinations of Al2O3/TiO2 composites are obtained by plasma enhanced atomic layer deposition (PEALD). Their growth, composition, dispersion relation, and optical bandgap are systematically studied by means of UV/VIS spectrophotometry, spectroscopic ellipsometry (SE), x-ray reflectometry (XRR), scanning transmission electron microscopy(STEM) and x-ray photoelectron spectroscopy (XPS). Besides, an effective medium approximation (EMA) approach is applied to model the heterostructures theoretically. The refractive index and the indirect bandgap of the heterostructures depend on the ratio of the two oxides, while the bandgap is very sensitive to the thicknesses of the barrier and quantum well layers. A large blue shift of the absorption edge from 400 nm to 320 nm is obtained by changing the TiO2 (quantum well) thickness from ~2 nm to ~0.1 nm separated by ~2 nm of Al2O3 (barrier) layers. PEALD unfolds the possibility of achieving optical quantizing effects within complex heterostructures enabling control of their structures down to atomic scale. It enables a path towards atomic scale processing of new 'artificial' materials with desired refractive indices and bandgap combinations by precise control of their compositions.
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Affiliation(s)
- Pallabi Paul
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany
| | - Md Golam Hafiz
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany
| | - Paul Schmitt
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany; Fraunhofer Institute for Applied Optics and Precision Engineering, Centre of Excellence in Photonics, Albert-Einstein-Str. 7, 07745 Jena, Germany
| | - Christian Patzig
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter-Huelse-Str. 1, 06120 Halle (Saale), Germany
| | - Felix Otto
- Institute of Solid-State Physics IFK, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany
| | - Torsten Fritz
- Institute of Solid-State Physics IFK, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany
| | - Andreas Tünnermann
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany; Fraunhofer Institute for Applied Optics and Precision Engineering, Centre of Excellence in Photonics, Albert-Einstein-Str. 7, 07745 Jena, Germany
| | - Adriana Szeghalmi
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany; Fraunhofer Institute for Applied Optics and Precision Engineering, Centre of Excellence in Photonics, Albert-Einstein-Str. 7, 07745 Jena, Germany.
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41
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Tang R, Wang L, Ying M, Yang W, Kheradmand A, Jiang Y, Li Z, Cui Y, Zheng R, Huang J. Multigraded Heterojunction Hole Extraction Layer of ZIF‐Co
x
Zn
1−
x
on Co
3
O
4
/TiO
2
Skeleton for a New Photoanode Architecture in Water Oxidation. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202000033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Rui Tang
- School of Physics Sydney Nano Institute The University of Sydney Sydney NSW 2006 Australia
- School of Chemical and Biomolecular Engineering Sydney Nano Institute The University of Sydney NSW 2037 Australia
| | - Lizhuo Wang
- School of Chemical and Biomolecular Engineering Sydney Nano Institute The University of Sydney NSW 2037 Australia
| | - Meihui Ying
- School of Chemical and Biomolecular Engineering Sydney Nano Institute The University of Sydney NSW 2037 Australia
| | - Wenjie Yang
- School of Chemical and Biomolecular Engineering Sydney Nano Institute The University of Sydney NSW 2037 Australia
| | - Amanj Kheradmand
- School of Engineering Macquarie University Sydney NSW 2109 Australia
| | - Yijiao Jiang
- School of Engineering Macquarie University Sydney NSW 2109 Australia
| | - Zhiyun Li
- Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano–Tech and Nano-Bionics The Chinese Academy of Sciences Suzhou 215123 China
| | - Yi Cui
- Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano–Tech and Nano-Bionics The Chinese Academy of Sciences Suzhou 215123 China
| | - Rongkun Zheng
- School of Physics Sydney Nano Institute The University of Sydney Sydney NSW 2006 Australia
| | - Jun Huang
- School of Chemical and Biomolecular Engineering Sydney Nano Institute The University of Sydney NSW 2037 Australia
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42
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Enhanced Performance of LiAl0.1Mn1.9O4 Cathode for Li-Ion Battery via TiN Coating. ENERGIES 2021. [DOI: 10.3390/en14040825] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The present work addresses the issues related to the capacity fading of spinel LiMn2O4, such as Mn leaching and Jahn–Teller distortion and suggests an advanced TiN-coated LiAl0.1Mn1.9O4 (LAMO) cathode material as an electrode for lithium-ion batteries. TiN coating layers with the same thickness but a different porosity cover the LiAl0.1Mn1.9O4 electrode via reactive magnetron sputtering, and present promising electrochemical behavior. In contrast with the pristine LiAl0.1Mn1.9O4, the dense TiN-coated LiAl0.1Mn1.9O4 electrode demonstrates a remarkable long-term cycling by reducing the contact area of the electrode/electrolyte interface, resulting in structure stabilization.
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43
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Noor S, Sajjad S, Leghari SAK, Flox C, Kallio T, Kauppinen EI, Ahmad S. Electronic transitions of SWCNTs in comparison to GO on Mn 3O 4/TiO 2 nanocomposites for hydrogen energy generation and solar photocatalysis. NEW J CHEM 2021. [DOI: 10.1039/d0nj05120a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conductivity of metal/metal oxide-doped TiO2 nanomaterials is enhanced by the incorporation of carbonaceous materials, e.g. single-walled carbon nanotubes (SWCNTs) and graphene oxide (GO).
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Affiliation(s)
- Saima Noor
- Faculty of Basic and Applied Sciences
- International Islamic University
- H-10 Islamabad
- Pakistan
- Department of Chemistry and Materials Science
| | - Shamaila Sajjad
- Faculty of Basic and Applied Sciences
- International Islamic University
- H-10 Islamabad
- Pakistan
| | | | - Cristina Flox
- Department of Chemistry and Materials Science
- Aalto University
- Finland
| | - Tanja Kallio
- Department of Chemistry and Materials Science
- Aalto University
- Finland
| | | | - Saeed Ahmad
- Department of Applied Physics
- Aalto University
- Finland
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44
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Photocatalytic activity of K2Ti6O13/TiO2 nanocomposite prepared using water extract of wood ash from waste for degradation of dye pollutants. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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45
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Chen TW, Tamilalagan E, Al Farraj DA, Chen SM, Muthumariappan A, Maheshwaran S, Elshikh MS. Improving sensitivity of antimicrobial drug nitrofurazone detection in food and biological samples based on nanostructured anatase-titania sheathed reduced graphene oxide. NANOTECHNOLOGY 2020; 31:445502. [PMID: 32796153 DOI: 10.1088/1361-6528/aba784] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, we have prepared anatase titanium (IV) oxide warped reduced graphene oxide nanocomposites (TiO2-rGO NC) using ultrasonic methodology. The morphology of the TiO2-rGO NC was studied using FESEM and TEM. In addition, XRD, Raman, thermogravimetric analysis (TGA) and XPS are used to analyze the crystallinity and chemical composition of the TiO2-rGO NC. We have also investigated the electrochemical behavior of the as-prepared NCs with electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and different pulse voltammetry techniques (DPV). The TiO2-rGO NC modified electrode shows the lower charge transfer resistance (R ct ) of 62.87 Ω. Next, the glassy carbon electrode (GCE) was modified with sonochemically prepared TiO2-rGO NC and used to determine the electrocatalytic reduction of nitrofurazone (NTF). Thus, the proposed sensor established the wider covering range (WCR) of 0.01 to 380 µM and an excellent detection limit of 2.28 nM. Finally, the TiO2-rGO NC/GCE was applied to determine the NTF in real samples, including crayfish and human blood serum samples, which acquired good found and recovery values.
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Affiliation(s)
- Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan. Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan. Department of Materials, Imperial College London, London SW72AZ, United Kingdom
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46
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Smieszek A, Seweryn A, Marcinkowska K, Sikora M, Lawniczak-Jablonska K, Witkowski BS, Kuzmiuk P, Godlewski M, Marycz K. Titanium Dioxide Thin Films Obtained by Atomic Layer Deposition Promotes Osteoblasts' Viability and Differentiation Potential While Inhibiting Osteoclast Activity-Potential Application for Osteoporotic Bone Regeneration. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4817. [PMID: 33126628 PMCID: PMC7662580 DOI: 10.3390/ma13214817] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/20/2020] [Accepted: 10/26/2020] [Indexed: 12/17/2022]
Abstract
Atomic layer deposition (ALD) technology has started to attract attention as an efficient method for obtaining bioactive, ultrathin oxide coatings. In this study, using ALD, we have created titanium dioxide (TiO2) layers. The coatings were characterised in terms of physicochemical and biological properties. The chemical composition of coatings, as well as thickness, roughness, wettability, was determined using XPS, XRD, XRR. Cytocompatibillity of ALD TiO2 coatings was accessed applying model of mouse pre-osteoblast cell line MC3T3-E1. The accumulation of transcripts essential for bone metabolism (both mRNA and miRNA) was determined using RT-qPCR. Obtained ALD TiO2 coatings were characterised as amorphous and homogeneous. Cytocompatibility of the layers was expressed by proper morphology and growth pattern of the osteoblasts, as well as their increased viability, proliferative and metabolic activity. Simultaneously, we observed decreased activity of osteoclasts. Obtained coatings promoted expression of Opn, Coll-1, miR-17 and miR-21 in MC3T3-E1 cells. The results are promising in terms of the potential application of TiO2 coatings obtained by ALD in the field of orthopaedics, especially in terms of metabolic- and age-related bone diseases, including osteoporosis.
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Affiliation(s)
- Agnieszka Smieszek
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, Norwida St. 27 B, PL-50375 Wroclaw, Poland; (A.S.); (K.M.); (M.S.)
| | - Aleksandra Seweryn
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (K.L.-J.); (B.S.W.); (P.K.); (M.G.)
| | - Klaudia Marcinkowska
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, Norwida St. 27 B, PL-50375 Wroclaw, Poland; (A.S.); (K.M.); (M.S.)
| | - Mateusz Sikora
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, Norwida St. 27 B, PL-50375 Wroclaw, Poland; (A.S.); (K.M.); (M.S.)
| | - Krystyna Lawniczak-Jablonska
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (K.L.-J.); (B.S.W.); (P.K.); (M.G.)
| | - Bartlomiej. S. Witkowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (K.L.-J.); (B.S.W.); (P.K.); (M.G.)
| | - Piotr Kuzmiuk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (K.L.-J.); (B.S.W.); (P.K.); (M.G.)
| | - Marek Godlewski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (K.L.-J.); (B.S.W.); (P.K.); (M.G.)
| | - Krzysztof Marycz
- International Institute of Translational Medicine, Jesionowa 11 Street, 55-124 Malin, Poland
- Collegium Medicum, Institute of Medical Science, Cardinal Stefan Wyszynski University (UKSW), Wóycickiego 1/3, 01-938 Warsaw, Poland
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47
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Kontoleta E, Tsoukala A, Askes SHC, Zoethout E, Oksenberg E, Agrawal H, Garnett EC. Using Hot Electrons and Hot Holes for Simultaneous Cocatalyst Deposition on Plasmonic Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35986-35994. [PMID: 32672034 PMCID: PMC7430944 DOI: 10.1021/acsami.0c04941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Hot electrons generated in metal nanoparticles can drive chemical reactions and selectively deposit cocatalyst materials on the plasmonic hotspots, the areas where the decay of plasmons takes place and the hot electrons are created. While hot electrons have been extensively used for nanomaterial formation, the utilization of hot holes for simultaneous cocatalyst deposition has not yet been explored. Herein, we demonstrate that hot holes can drive an oxidation reaction for the deposition of the manganese oxide (MnOx) cocatalyst on different plasmonic gold (Au) nanostructures on a thin titanium dioxide (TiO2) layer, excited at their surface plasmon resonance. An 80% correlation between the hot-hole deposition sites and the simulated plasmonic hotspot location is showed when considering the typical hot-hole diffusion length. Simultaneous deposition of more than one cocatalyst is also achieved on one of the investigated plasmonic systems (Au plasmonic nanoislands) through the hot-hole oxidation of a manganese salt and the hot-electron reduction of a platinum precursor in the same solution. These results add more flexibility to the use of hot carriers and open up the way for the design of complex photocatalytic nanostructures.
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Affiliation(s)
- Evgenia Kontoleta
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, Netherlands
| | - Alexandra Tsoukala
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, Netherlands
| | - Sven H. C. Askes
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, Netherlands
| | - Erwin Zoethout
- Dutch
Institute for Fundamental Energy Research (DIFFER), De Zaale 20, 5612 AJ Eindhoven, Netherlands
| | - Eitan Oksenberg
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, Netherlands
| | - Harshal Agrawal
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, Netherlands
| | - Erik C. Garnett
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, Netherlands
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48
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Chen X, Zhang Y, Wu B, Sant G. A Nitrogen- and Self-Doped Titania Coating Enables the On-Demand Release of Free Radical Species. ACS OMEGA 2019; 4:18567-18573. [PMID: 31737815 PMCID: PMC6854566 DOI: 10.1021/acsomega.9b02188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
For potential applications such as suppressing the onset of peri-implant infections, a doped titania coating was developed to induce free radical release because of its ability for microbial elimination. The coatability of the sol-gel precursor is robust since the suspension's rheology can be modified to attain uniform and complete surface coverage. The coating is composed of a mixture of anatase and rutile polymorphs doped with nitrogen (N3-), and it contains substoichiometric Ti2+ and Ti3+ species. Nitrogen doping results in a 0.4 eV band gap shift, while the defects induce photocurrent generation under visible light excitation up to 650 nm. Greater currents were observed in the nitrogen-doped titania at wavelengths above 450 nm vis-à-vis its (singularly) self-doped counterparts. The (photo)electrochemical behavior and photoactivity of the coating were evaluated by assessing redox species formation in a background aqueous solution. In the absence of any illumination, the coating behaved as an insulator and inhibited the activities of both oxidative and reductive species. On the other hand, under illumination, the coating enhances oxidation processes and inhibits reduction reactions within a near-field region wherein release of free radicals occurs and is constrained (delimited).
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Affiliation(s)
- Xin Chen
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, Departments of Bioengineering,
Advanced Prosthodontics, and Orthopedic Surgery, Department of Materials Science and
Engineering, California Nanosystems Institute (CNSI), Weintraub Center for Reconstructive
Biotechnology, and Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
| | - Yulong Zhang
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, Departments of Bioengineering,
Advanced Prosthodontics, and Orthopedic Surgery, Department of Materials Science and
Engineering, California Nanosystems Institute (CNSI), Weintraub Center for Reconstructive
Biotechnology, and Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
| | - Benjamin Wu
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, Departments of Bioengineering,
Advanced Prosthodontics, and Orthopedic Surgery, Department of Materials Science and
Engineering, California Nanosystems Institute (CNSI), Weintraub Center for Reconstructive
Biotechnology, and Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
| | - Gaurav Sant
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, Departments of Bioengineering,
Advanced Prosthodontics, and Orthopedic Surgery, Department of Materials Science and
Engineering, California Nanosystems Institute (CNSI), Weintraub Center for Reconstructive
Biotechnology, and Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
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49
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Jeon JB, Kim BJ, Bang GJ, Kim MC, Lee DG, Lee JM, Lee M, Han HS, Boschloo G, Lee S, Jung HS. Photo-annealed amorphous titanium oxide for perovskite solar cells. NANOSCALE 2019; 11:19488-19496. [PMID: 31552996 DOI: 10.1039/c9nr05776e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electron selective layers are important to the efficiency, stability and hysteresis of perovskite solar cells. Photo-annealing is a low-cost, roll-to-roll-compatible process that can be applied to the post-treatment fabrication of sol-gel based metal oxide layers. Here, we fabricate an amorphous titanium oxide electron selective layer at a low temperature in a dry atmosphere using a UV light annealing system and compare it with a thermal annealing process. Active oxygen species are created by using UV light to promote hydrolysis and condense the TiO2 precursor, which removes organic ligands effectively. The photo-annealed TiO2-based perovskite solar cell has a power conversion efficiency of 19.37% without hysteresis.
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Affiliation(s)
- Jae Bum Jeon
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
| | - Byeong Jo Kim
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Republic of Korea. and Department of Chemistry-Ångström Laboratory, Physical Chemistry, Uppsala University, Box 523, SE 751 20 Uppsala, Sweden
| | - Gi Joo Bang
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
| | - Min-Cheol Kim
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - Dong Geon Lee
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
| | - Jae Myeong Lee
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
| | - Minho Lee
- School of Materials Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Hyun Soo Han
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Gerrit Boschloo
- Department of Chemistry-Ångström Laboratory, Physical Chemistry, Uppsala University, Box 523, SE 751 20 Uppsala, Sweden
| | - Sangwook Lee
- School of Materials Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Hyun Suk Jung
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
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50
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Santangelo S, Pantò F, Triolo C, Stelitano S, Frontera P, Fernández-Carretero F, Rincon I, Azpiroz P, García-Luis A, Belaustegui Y. Evaluation of the electrochemical performance of electrospun transition metal oxide-based electrode nanomaterials for water CDI applications. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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