Non-agglomerated silicon–organic nanoparticles and their nanocomplexes with oligonucleotides: synthesis and properties

• Asya S. Levina,
• Marina N. Repkova,
• Nadezhda V. Shikina,
• Zinfer R. Ismagilov,
• Svetlana A. Yashnik,
• Dmitrii V. Semenov,
• Yulia I. Savinovskaya,
• Natalia A. Mazurkova,
• Inna A. Pyshnaya and
• Valentina F. Zarytova

Beilstein J. Nanotechnol. 2018, 9, 2516–2525, doi:10.3762/bjnano.9.234

• practical medicine. Despite many efforts in this field, this problem cannot be considered as completely solved. А promising approach is the use of various nanoparticles as delivery vehicles. We have previously developed methods for immobilizing DNA fragments onto titanium dioxide nanoparticles with the

Nanocellulose: Recent advances and its prospects in environmental remediation

• Katrina Pui Yee Shak,
• Yean Ling Pang and
• Shee Keat Mah

Beilstein J. Nanotechnol. 2018, 9, 2479–2498, doi:10.3762/bjnano.9.232

• fibrillated cellulose as a support/carrier for catalyst nanoparticles has attracted a lot of attention in recent years. For example, a study led by An et al. [125] discusses the application of CNFs as a support for titanium dioxide nanoparticles to prepare nano-fibrillated cellulose–TiO2 nanoparticle

• -absorbing materials in order to protect cellulosic fibres from UV bleaching [128]. An et al. [129] claimed that the prepared nano-fibrillated cellulose/magnetite/titanium dioxide nanocomposites had a higher photocatalytic hydrogen generation rate as compared to the nano-fibrillated cellulose/titanium

• dioxide sample. The incorporation of magnetite was able to inhibit the photodegradation of the cellulose structure during UV irradiation and this hybrid structure demonstrated high catalyst recyclability using an external magnetic field. Nanoparticles generally tend to aggregate, leading to difficulties

Droplet-based synthesis of homogeneous magnetic iron oxide nanoparticles

• Christian D. Ahrberg,
• Ji Wook Choi and
• Bong Geun Chung

Beilstein J. Nanotechnol. 2018, 9, 2413–2420, doi:10.3762/bjnano.9.226

• have been synthesized in pinched flow microfluidic geometries, such as fluorescent silica particles [13], or titanium dioxide particles [27]. For these applications, the microfluidic devices were made from poly(dimethylsiloxane) (PDMS) following a soft-lithography fabrication method [28][29], or made

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

• Muhammad Imran,
• Nunzio Motta and
• Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

• of electrospun metal oxide (MOx) semiconductors have been used for gas sensing applications. These semiconductors include titanium dioxide (TiO2) [93][94][95], tungsten trioxide (WO3) [27][96][97][98][99][100][101][102][103][104][105][106][107][108][109][110], copper oxide (CuO) [111], NiO [112

A scanning probe microscopy study of nanostructured TiO₂/poly(3-hexylthiophene) hybrid heterojunctions for photovoltaic applications

• Laurie Letertre,
• Roland Roche,
• Olivier Douhéret,
• Hailu G. Kassa,
• Denis Mariolle,
• Nicolas Chevalier,
• Łukasz Borowik,
• Philippe Dumas,
• Benjamin Grévin,
• Roberto Lazzaroni and
• Philippe Leclère

Beilstein J. Nanotechnol. 2018, 9, 2087–2096, doi:10.3762/bjnano.9.197

• the electron acceptor materials commonly used for DSSC and HBHJ, titanium dioxide (TiO2) is a well-known metal oxide semiconductor [6][7][8]. Depending on its nanostructure and its crystalline phase, its conductivity varies from 10−4 Ω−1·cm−1 to 10−11 Ω−1·cm−1 [9][10]. TiO2 is very valuable because it

Electromigrated electrical optical antennas for transducing electrons and photons at the nanoscale

• Arindam Dasgupta,
• Mickaël Buret,
• Nicolas Cazier,
• Marie-Maxime Mennemanteuil,
• Reinaldo Chacon,
• Kamal Hammani,
• Jean-Claude Weeber,
• Juan Arocas,
• Laurent Markey,
• Gérard Colas des Francs,
• Alexander Uskov,
• Igor Smetanin and
• Alexandre Bouhelier

Beilstein J. Nanotechnol. 2018, 9, 1964–1976, doi:10.3762/bjnano.9.187

• processing. We realize the implementation of tunneling antennas on a TiO2 waveguide through a multi-step process. First, a 85 to 110 nm thick titanium dioxide layer is deposited by physical vapor deposition on a clean glass substrate. Then, the Au backbone that will subsequently define the electrically

A visible-light-controlled platform for prolonged drug release based on Ag-doped TiO₂ nanotubes with a hydrophobic layer

• Caihong Liang,
• Jiang Wen and
• Xiaoming Liao

Beilstein J. Nanotechnol. 2018, 9, 1793–1801, doi:10.3762/bjnano.9.170

• exhibit promising application as a localized, prolonged drug delivery platform. Keywords: Ag doping; drug delivery; hydrophobic layer; prolonged drug release; TiO2 nanotubes; visible-light-controlled release; Introduction Titanium dioxide nanotubes (TNTs) are often employed as drug carriers, owing to

Controllable one-pot synthesis of uniform colloidal TiO₂ particles in a mixed solvent solution for photocatalysis

• Jong Tae Moon,
• Seung Ki Lee and
• Ji Bong Joo

Beilstein J. Nanotechnol. 2018, 9, 1715–1727, doi:10.3762/bjnano.9.163

• Abstract This study reports on the controllable synthesis of uniform colloidal titanium dioxide (TiO2) particles and their photocatalytic applications toward rhodamine B (RhB) degradation. The monodispersed TiO2 particles were synthesized under mixed solvent conditions by sol–gel chemistry in a one-pot

• well as the crystalline properties and performance enhancement of TiO2 photocatalysts calcined at different temperatures. Keywords: mixed solvent; one-pot synthesis; photocatalysts; rhodamine B degradation; sol–gel synthesis; spherical TiO2 particles; Introduction Titanium dioxide (TiO2) is a widely

Sulfur-, nitrogen- and platinum-doped titania thin films with high catalytic efficiency under visible-light illumination

• Boštjan Žener,
• Lev Matoh,
• Giorgio Carraro,
• Bojan Miljević and
• Romana Cerc Korošec

Beilstein J. Nanotechnol. 2018, 9, 1629–1640, doi:10.3762/bjnano.9.155

• of Novi Sad, Faculty of Technology, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia 10.3762/bjnano.9.155 Abstract Titanium dioxide photocatalysts have received a lot of attention during the past decades due to their ability to degrade various organic pollutants to CO2 and H2O, which makes them

• synthesis; thin films; titanium dioxide; visible-light illumination; Introduction In recent years, titanium dioxide (TiO2) has emerged as one of the most widely investigated semiconductors [1]. Due to its favorable properties (e.g., chemical and biological stability, nontoxicity and inexpensive price) it

• is used in a variety of applications, such as photovoltaics [2], white pigments [3], electrochemistry [4], catalytic support [5], and most notably, photocatalysis [6]. Photocatalysis is used to describe a process during which a semiconductor (titanium dioxide) interacts with light to produce reactive

Cr(VI) remediation from aqueous environment through modified-TiO₂-mediated photocatalytic reduction

• Rashmi Acharya,
• Brundabana Naik and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 1448–1470, doi:10.3762/bjnano.9.137

• of H2 is recognized as a green technology since it uses abundantly available water resources and inexhaustible solar energy. Therefore, substantial research in this field has been carried out since the pioneering work of Fujishima and Honda over titanium dioxide (TiO2) electrodes under irradiation of

Semi-automatic spray pyrolysis deposition of thin, transparent, titania films as blocking layers for dye-sensitized and perovskite solar cells

• Hana Krýsová,
• Josef Krýsa and
• Ladislav Kavan

Beilstein J. Nanotechnol. 2018, 9, 1135–1145, doi:10.3762/bjnano.9.105

• properties that were not influenced by post-calcination. These results will surely find use in the fabrication of large-scale dye-sensitized and perovskite solar cells. Keywords: blocking films; FTO; solar cells; spray pyrolysis deposition; titanium dioxide; Introduction Dye-sensitized solar cells (DSSCs

• accompanied by the undesirable back reaction of photoinjected electrons with the hole-transporting medium or the oxidized mediator. This reaction occurs both at the TiO2 surface and at the exposed areas of the F-doped SnO2 (FTO) conducting glass that are not covered by the titanium dioxide nanoparticles. In

Room-temperature single-photon emitters in titanium dioxide optical defects

• Kelvin Chung,
• Yu H. Leung,
• Chap H. To,
• Aleksandra B. Djurišić and
• Snjezana Tomljenovic-Hanic

Beilstein J. Nanotechnol. 2018, 9, 1085–1094, doi:10.3762/bjnano.9.100

• (NAMI), Science Park, Hong Kong 10.3762/bjnano.9.100 Abstract Fluorescence properties of crystallographic point defects within different morphologies of titanium dioxide were investigated. For the first time, room-temperature single-photon emission in titanium dioxide optical defects was discovered in

• -photon source within a wide bandgap semiconductor. Keywords: fluorescence; optical defects; room temperature; single-photon emitters; titanium dioxide; Introduction Single-photon sources offer non-classical states of light [1] and are a prerequisite for future quantum technologies [2]. There are many

• emission. ZnO is the only metal oxide reported to host single-photon emitting defects at room temperature and was recently shown to exhibit stable fluorescence when uptaken into skin cells, making it a viable biomarker [11]. Titanium dioxide (TiO2) is a well-studied wide-bandgap semiconductor, its

Comparative study of antibacterial properties of polystyrene films with TiO_x and Cu nanoparticles fabricated using cluster beam technique

• Vladimir N. Popok,
• Cesarino M. Jeppesen,
• Peter Fojan,
• Anna Kuzminova,
• Jan Hanuš and
• Ondřej Kylián

Beilstein J. Nanotechnol. 2018, 9, 861–869, doi:10.3762/bjnano.9.80

• further decreases to 0.37 after 120 min. One of the factors for the high efficiency can be related to the structure and composition of the particles, in particular, to the high fraction of titanium dioxide as found by XPS. Another reason could be the aggregation of NPs leading to relatively large 3D

Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity

• Mengyuan Zhang,
• Jiaqian Qin,
• Pengfei Yu,
• Bing Zhang,
• Mingzhen Ma,
• Xinyu Zhang and
• Riping Liu

Beilstein J. Nanotechnol. 2018, 9, 789–800, doi:10.3762/bjnano.9.72

• degradation [3][4][5][6], nitrogen fixation [7][8], to solar fuel production [9]. The metal oxides, such as CdO [10], Al2O3 [11], and CuO [12][13], has attracted a lot of interest in photocatalytic applications. And among all of these metal oxides, it is titanium dioxide and zinc oxide (TiO2 and ZnO) that are

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications

• Anna Różycka,
• Agnieszka Iwan,
• Krzysztof Artur Bogdanowicz,
• Michal Filapek,
• Natalia Górska,
• Damian Pociecha,
• Marek Malinowski,
• Patryk Fryń,
• Agnieszka Hreniak,
• Jakub Rysz,
• Paweł Dąbczyński and
• Monika Marzec

Beilstein J. Nanotechnol. 2018, 9, 721–739, doi:10.3762/bjnano.9.67

• .9.67 Abstract The effect of the presence of titanium dioxide in two new imines, (E,E)-(butane-1,4-diyl)bis(oxybutane-4,1-diyl) bis(4-{[(benzo[d][1,3]thiazol-2-yl)methylidene]amino}benzoate) (SP1) and (E)-N-[(benzo[d][1,3]thiazol-2-yl)methylidene]-4-dodecylaniline (SP2), on the properties and stability

• of imine:TiO2 composites for organic device applications were examined. The investigated titanium dioxide (in anatase form, obtained via the sol–gel method) exhibited a surface area of 59.5 m2/g according to Brunauer–Emmett–Teller theory, and its structure is a combination of both meso- and

• physical parameters of titanium dioxide TiO2 powder was prepared via the sol–gel technique using titanium(IV) isopropoxide (TIPO) as a precursor as was fully described in our previous paper [34]. The obtained TiO2 powder exhibited an anatase form, which was confirmed from X-ray diffraction (XRD

Fabrication and photoactivity of ionic liquid–TiO₂ structures for efficient visible-light-induced photocatalytic decomposition of organic pollutants in aqueous phase

• Anna Gołąbiewska,
• Marta Paszkiewicz-Gawron,
• Aleksandra Sadzińska,
• Wojciech Lisowski,
• Ewelina Grabowska,
• Adriana Zaleska-Medynska and
• Justyna Łuczak

Beilstein J. Nanotechnol. 2018, 9, 580–590, doi:10.3762/bjnano.9.54

• titanium dioxide spheres results in a red-shift of absorption edge for the IL–TiO2 semiconductors. In this regard, the direct increase of the photoactivity of IL–TiO2 in comparison to pristine TiO2 was observed. The active species trapping experiments indicated that O2•− is the main active species, created

• pollutants in aqueous and gas phases requires visible-light responsive, stable materials and a basic understanding of these materials [1][2][3][4]. Although various semiconductors are considered for environmental pollution abatement, titanium dioxide (TiO2) is still the most promising due to its stability

• absorption spectrum of the titanium dioxide in the visible region. Therefore, the enhanced photocatalytic activity of IL–TiO2 can be attributed to the improved optical absorption. Moreover, the XPS data showed that the amount of carbon, nitrogen and chlorine were higher for the samples with molar ratio 1:3

Influence of the preparation method on the photocatalytic activity of Nd-modified TiO₂

• Patrycja Parnicka,
• Paweł Mazierski,
• Tomasz Grzyb,
• Wojciech Lisowski,
• Ewa Kowalska,
• Bunsho Ohtani,
• Adriana Zaleska-Medynska and
• Joanna Nadolna

Beilstein J. Nanotechnol. 2018, 9, 447–459, doi:10.3762/bjnano.9.43

• light-induced degradation of the model pollutant in aqueous solution. Keywords: heterogeneous photocatalysis; hydrothermal method; modified TiO2; neodymium; sol–hydrothermal method; Introduction Heterogeneous photocatalysis based on titanium dioxide (TiO2) has become the focus of numerous studies due

Photocatalytic and adsorption properties of TiO₂-pillared montmorillonite obtained by hydrothermally activated intercalation of titanium polyhydroxo complexes

• Mikhail F. Butman,
• Nikolay L. Ovchinnikov,
• Nikita S. Karasev,
• Nataliya E. Kochkina,
• Alexander V. Agafonov and
• Alexandr V. Vinogradov

Beilstein J. Nanotechnol. 2018, 9, 364–378, doi:10.3762/bjnano.9.36

• . Keywords: adsorption; intercalation; mesoporosity; photocatalytic activity; pillared montmorillonite; titanium oxide; Introduction Titanium dioxide in its nanometer-sized form is one of the most promising modern photocatalysts [1]. However, the use of pure TiO2 nanoparticles is hindered by some

• limitations such as low adsorption capacity and possibility of particle agglomeration, which reduce its photocatalytic efficiency for the processes of purifying sewage and natural water bodies from pollutants of organic origin. To overcome these limitations, titanium dioxide nanoparticles are distributed on

• a significant cation exchange capacity. This makes it possible to efficiently intercalate various inorganic cations into the interlayer space of MM, in particular, those possessing photocatalytic activity. One of promising methods for modifying MM with titanium dioxide, called pillarization

Sugarcane juice derived carbon dot–graphitic carbon nitride composites for bisphenol A degradation under sunlight irradiation

• Lan Ching Sim,
• Jing Lin Wong,
• Chen Hong Hak,
• Jun Yan Tai,
• Kah Hon Leong and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2018, 9, 353–363, doi:10.3762/bjnano.9.35

• absorption spectra after titanium dioxide (TiO2) loading [28] and acid treatment [29], the incorporation of CDs into g-C3N4 consistently red-shifted the absorption spectra towards the visible and NIR region. However, the photocatalytic performance of the composites is possibly limited under NIR light

Impact of titanium dioxide nanoparticles on purification and contamination of nematic liquid crystals

• Dmitrii Pavlovich Shcherbinin and
• Elena A. Konshina

Beilstein J. Nanotechnol. 2017, 8, 2766–2770, doi:10.3762/bjnano.8.275

• Dmitrii Pavlovich Shcherbinin Elena A. Konshina Department of Optical Physics and Modern Natural Science, ITMO University, Kronverkskiy pr. 49, Saint Petersburg 197101, Russia 10.3762/bjnano.8.275 Abstract We have investigated the impact of titanium dioxide nanoparticles on the ionic

• contamination of liquid crystals. Nematic liquid crystals with high and low initial ionic contamination have been examined. It has been shown that titanium dioxide nanoparticles reduced the ion density of liquid crystals with high initial ionic contamination from 134.5 × 1012 cm−3 to 63.2 × 1012 cm−3. In the

• case of liquid crystals with low initial ionic contamination, the nanoparticles led to an insignificant increase of ion density from 19.8 × 1012 cm−3 to 25.7 × 1012 cm−3. Keywords: ionic impurities; liquid crystals; nanoparticles; titanium dioxide; Findings Nowadays, liquid crystals (LCs) are widely

CdSe nanorod/TiO₂ nanoparticle heterojunctions with enhanced solar- and visible-light photocatalytic activity

• Fakher Laatar,
• Hatem Moussa,
• Halima Alem,
• Lavinia Balan,
• Emilien Girot,
• Ghouti Medjahdi,
• Hatem Ezzaouia and
• Raphaël Schneider

Beilstein J. Nanotechnol. 2017, 8, 2741–2752, doi:10.3762/bjnano.8.273

• conversion of solar energy to chemical energy, for example, via water splitting to produce hydrogen, is the topic of numerous current research projects. Titanium dioxide (TiO2) has been widely investigated over the last three decades and has been demonstrated to be of high potential [1][2]. However, TiO2

Refractive index sensing and surface-enhanced Raman spectroscopy using silver–gold layered bimetallic plasmonic crystals

• Somi Kang,
• Sean E. Lehman,
• Matthew V. Schulmerich,
• An-Phong Le,
• Tae-woo Lee,
• Stephen K. Gray,
• Rohit Bhargava and
• Ralph G. Nuzzo

Beilstein J. Nanotechnol. 2017, 8, 2492–2503, doi:10.3762/bjnano.8.249

• frequencies. A ≈5 nm titanium dioxide adhesion layer was deposited using atomic layer deposition (Cambridge nanotech) on the embossed SOG nanostructure followed by deposition of a ≈50 nm metallic film (Au, Ag or both) via one of the various methods. Sputter deposition in a 5 mTorr argon atmosphere (AJA

Involvement of two uptake mechanisms of gold and iron oxide nanoparticles in a co-exposure scenario using mouse macrophages

• Dimitri Vanhecke,
• Dagmar A. Kuhn,
• Dorleta Jimenez de Aberasturi,
• Sandor Balog,
• Ana Milosevic,
• Dominic Urban,
• Diana Peckys,
• Niels de Jonge,
• Wolfgang J. Parak,
• Alke Petri-Fink and
• Barbara Rothen-Rutishauser

Beilstein J. Nanotechnol. 2017, 8, 2396–2409, doi:10.3762/bjnano.8.239

• ], potentially reflecting different agglomeration states. The uptake mechanism for one and the same NP into different cell types may even vary [10]. For instance, the uptake of fetal bovine serum-treated titanium dioxide NPs (TiO2NP) into A549 and H1299 cells, two human lung cell lines, is different, and it was

Hydrothermal synthesis of ZnO quantum dot/KNb₃O₈ nanosheet photocatalysts for reducing carbon dioxide to methanol

• Xiao Shao,
• Weiyue Xin and
• Xiaohong Yin

Beilstein J. Nanotechnol. 2017, 8, 2264–2270, doi:10.3762/bjnano.8.226

• much higher than that of the commercial Degussa P25 [10]. Zhou et al. synthesized porous K4Nb6O17 microspheres with large surface area via a homogeneous precipitation method, which showed not only two times higher photocatalytic activity than that of the commercial Degussa P25 (the titanium dioxide

Synthesis and characterization of noble metal–titania core–shell nanostructures with tunable shell thickness

• Bartosz Bartosewicz,
• Marta Michalska-Domańska,
• Malwina Liszewska,
• Dariusz Zasada and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2017, 8, 2083–2093, doi:10.3762/bjnano.8.208

• characterization of metal–metal oxide core–shell nanostructures. Keywords: Ag@TiO2; Au@TiO2; core–shell nanostructures; titania coating; titanium dioxide; tunable resistive pulse sensing; Introduction In recent years, core–shell nanostructures (CSNs) have become one of the most widely studied hybrid structures

• ][5][6][7][8][9][10][11]. For many applications, however, the use of titanium dioxide in CSNs would be of much greater interest. Useful physicochemical properties of titanium dioxide in its crystalline forms, rutile and anatase, such as high refractive index and photocatalytic activity have led to its