Photoelectrochemical water oxidation over TiO₂ nanotubes modified with MoS₂ and g-C₃N₄

• Phuong Hoang Nguyen,
• Thi Minh Cao,
• Tho Truong Nguyen,
• Hien Duy Tong and
• Viet Van Pham

Beilstein J. Nanotechnol. 2022, 13, 1541–1550, doi:10.3762/bjnano.13.127

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

• Se-Kwon Kim,
• Sesha Subramanian Murugan,
• Pandurang Appana Dalavi,
• Sebanti Gupta,
• Sukumaran Anil,
• Gi Hun Seong and
• Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

• fluids [117][118]. A recent study has proven that synthetic changes made to the surface of titanium oxide (TiO2) nanotubes can influence their characteristics, substantially impacting cell contacts and antibacterial activity. As a result, antibiotic drugs combined with a surface-modified TiO2-based drug

• ) to create TiO2 nanotubes. Naringin was also dropped directly into TiO2 nanotubes, which were then subsequently covered with chitosan layers. There was a long-term release of naringin from the system. In vitro biological tests on osteoblasts revealed that the cells were viable and alkaline phosphatase

• activity was increased. In addition, Alizarin red S staining tests detected the development of mineralized nodules [81]. On the Ti substrate, TiO2 nanotubes carrying a gentamicin drug mixture were deposited. Furthermore, a combination of alginate and chitosan was utilized to cover the TiO2–gentamicin

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

• Zehao Lin,
• Zhan Yang and
• Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

• nanotubes were formed by TiO2 nanotubes that uniformly anchored with Bi2WO6 nanoparticles of various densities on the surface. The composites exhibited improved photocatalytic activities toward the reduction of Cr(VI) and degradation of rhodamine B under visible light (λ > 420 nm), which were attributed to

• the uniform anchoring of Bi2WO6 nanoparticles on TiO2 nanotubes, as well as strong mutual effects and well-proportioned formation of heterostructures in between the Bi2WO6 and TiO2 phases. These improvements arose from the cellulose-derived unique structures, leading to an enhanced absorption of

• fabricated by depositing Bi2WO6 nanoparticles on hierarchically interwoven TiO2 nanotubes via the solvothermal method, and the densities of Bi2WO6 nanoparticles in the composites were regulated by the concentrations of the precursors. When the Bi2WO6/TiO2-NT nanocomposites were used for the photocatalytic

Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis

• Zahra Nabizadeh,
• Mahmoud Nasrollahzadeh,
• Hamed Daemi,
• Mohamadreza Baghaban Eslaminejad,
• Ali Akbar Shabani,
• Mehdi Dadashpour,
• Majid Mirmohammadkhani and
• Davood Nasrabadi

Beilstein J. Nanotechnol. 2022, 13, 363–389, doi:10.3762/bjnano.13.31

• (TiO2) nanotubes have recently attracted widespread attention in the biomedical field due to the great biocompatibility, large specific surface area, and the provision of an inner space capable of being filled with drugs and bioactive molecules [139][140]. Recently, TiO2 nanotubes have been introduced

• as potential candidates for bone TE due to osteoblast attachment and corrosion resistance [141]. Wan et al. used bacterial cellulose as a template to synthesize calcined mesoporous TiO2 nanotubes and constructed a nanotube-based scaffold using a template-assisted sol–gel method [142]. In addition to

• enhancing the ALP activity and mineralization, the scaffold showed improved cell proliferation. Khoshroo et al. fabricated a 3D PCL/TiO2 sintered microsphere scaffold, which improved the mechanical and biological properties for bone TE purposes [143]. Moreover, the results showed that the presence of TiO2

Engineered titania nanomaterials in advanced clinical applications

• Padmavati Sahare,
• Paulina Govea Alvarez,
• Juan Manual Sanchez Yanez,
• Gabriel Luna-Bárcenas,
• Samik Chakraborty,
• Sujay Paul and
• Miriam Estevez

Beilstein J. Nanotechnol. 2022, 13, 201–218, doi:10.3762/bjnano.13.15

• minimize the risk of device-related infections, implants are usually coated with TiO2 nanotubes, which under UV irradiation, generate reactive oxygen species (ROS), resulting in the disinfection ability [13]. One of the most vital contributions of nanotechnology is the development of novel modes of drug

• shell for the selective and rapid capture of peptides from human serum and urine samples [17]. Many studies have been published on using TiO2 nanotubes as photoelectrochemical glucose sensors for health purposes [18][19][20]. The present review focuses on contemporary research of TiO2 nanoparticles and

• bacterial accumulation in implants, surface modification is increasingly gaining attention. Dental implants have been modified with drug-releasing TiO2 nanotubes to overcome the infection caused by the presence of persistent oral pathogenic microbial biofilms [57]. Their nanometer-sized roughness and

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

• Viet Van Pham,
• Hong-Huy Tran,
• Thao Kim Truong and
• Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

• ]. Huy et al. [38] hydrothermally synthesized SnO2 NPs adhering to TiO2 nanotubes (SnO2/TNTs) via a facile one-step method for the photocatalytic abatement of NO under visible light (Figure 9). At a NO concentration of 450 ppb in a continuous flow, SnO2/TNTs yields a photocatalytic degradation of NO of

Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications

• Sepand Tehrani Fateh,
• Lida Moradi,
• Elmira Kohan,
• Michael R. Hamblin and
• Amin Shiralizadeh Dezfuli

Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

• Matías Guerrero Correa,
• Fernanda B. Martínez,
• Cristian Patiño Vidal,
• Camilo Streitt,
• Juan Escrig and
• Carol Lopez de Dicastillo

Beilstein J. Nanotechnol. 2020, 11, 1450–1469, doi:10.3762/bjnano.11.129

• NPs has been directed towards water disinfection, food packaging in addition to their known use as a UV filter to prevent skin cancer [114]. Lopez de Dicastillo et al. (2019) developed hollow TiO2 nanotubes and nanospheres with high antimicrobial activity through the combination of electrospinning and

Widening of the electroactivity potential range by composite formation – capacitive properties of TiO₂/BiVO₄/PEDOT:PSS electrodes in contact with an aqueous electrolyte

• Konrad Trzciński,
• Mariusz Szkoda,
• Andrzej P. Nowak,
• Marcin Łapiński and
• Anna Lisowska-Oleksiak

Beilstein J. Nanotechnol. 2019, 10, 483–493, doi:10.3762/bjnano.10.49

• , Poland 10.3762/bjnano.10.49 Abstract Composites based on the titania nanotubes were tested in aqueous electrolyte as a potential electrode material for energy storage devices. The nanotubular morphology of TiO2 was obtained by Ti anodization. TiO2 nanotubes were covered by a thin layer of bismuth

• nanotubular morphology of TiO2 was obtained by Ti plate anodization. The nanostructure of TiO2 provides a high specific surface area that is crucial for energy storage devices based on pseudocapacitance and electrochemical double-layer capacitance. TiO2 nanotubes were covered by a nanometric layer of bismuth

• . The short time of BiVO4 deposition preserved the porous morphology of TiO2 nanotubes. It is advantageous that the nanoporous structure of the nanotubes is preserved and not fully filled with BiVO4. It ensures a large interface area between the electrode and the electrolyte that is crucial for

Impact of the anodization time on the photocatalytic activity of TiO₂ nanotubes

• Jesús A. Díaz-Real,
• Geyla C. Dubed-Bandomo,
• Juan Galindo-de-la-Rosa,
• Luis G. Arriaga,
• Janet Ledesma-García and
• Nicolas Alonso-Vante

Beilstein J. Nanotechnol. 2018, 9, 2628–2643, doi:10.3762/bjnano.9.244

• anodization produces vertically oriented, well-ordered nanotubular arrays with high aspect ratio. TiO2 nanotubes (TNTs) produced in this way have been preferred by several groups since they are expected to exhibit better photocatalytic properties than nanoparticles, due to the short electron-diffusion path

• of surface hydroxy groups induced by the fluorination of the TNTs. Experimental Preparation of TiO2-NT electrodes TiO2 nanotubes were fabricated by electrochemical anodic oxidation of Ti foils (99% purity, 0.127 mm, Alfa-Aesar) [93]. Briefly, the foils were pre-treated with sandpaper, #600, #1200 and

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

• . Thus, Zn exhibits significant, promising application in the biomedical field. Hence, Zn was selected as a model drug to be loaded into the TiO2 nanotubes for the drug delivery system in this work. In present work, we provide an approach for a visible-light-controlled drug release platform based on the

• structural modification of TiO2 nanotubes. We decorated AgNPs onto two-layer TNTs fabricated by an in situ voltage up-anodization technique to improve the availability of visible light. In addition, we coated a hydrophobic organic layer (dodecanethiol) directly onto the hydrophilic surface of the nanotubes

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

• photocatalytic reduction of Cr(VI) was investigated by Qin et al. [166]. Zhong and co-workers fabricated Cu-decorated TiO2 nanotube photoelectrodes by a facile hydrothermal method. The optoelectronic coupling between Cu nanoparticles and TiO2 nanotubes enhanced the rate of transfer of electrons and subsequently

Ab initio study of adsorption and diffusion of lithium on transition metal dichalcogenide monolayers

• Xiaoli Sun and
• Zhiguo Wang

Beilstein J. Nanotechnol. 2017, 8, 2711–2718, doi:10.3762/bjnano.8.270

• excellent cycling stability and superior rate performance. The composites exhibited a high discharge capacity of 1546 mAh/g after 300 cycles. The MoS2 composites grown on TiO2 nanotubes show better rate capability with a reversible capacity of 461 mAh/g at 1000 mA/g, compared with the capacity of pure MoS2

Fast diffusion of silver in TiO₂ nanotube arrays

• Wanggang Zhang,
• Yiming Liu,
• Diaoyu Zhou,
• Hui Wang,
• Wei Liang and
• Fuqian Yang

Beilstein J. Nanotechnol. 2016, 7, 1129–1140, doi:10.3762/bjnano.7.105

• Education, Taiyuan Shanxi 030024, China Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA 10.3762/bjnano.7.105 Abstract Using magnetron sputtering and heat treatment, Ag@TiO2 nanotubes are prepared. The effects of heat-treatment temperature and heating time

• on the evolution of Ag nanofilms on the surface of TiO2 nanotubes and microstructure of Ag nanofilms are investigated by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Ag atoms migrate mainly on the outmost surface of the TiO2 nanotubes, and fast

• diffusion of Ag atoms is observed. The diffusivity for the diffusion of Ag atoms on the outmost surface of the TiO2 nanotubes at 400 °C is 6.87 × 10−18 m2/s, which is three orders of magnitude larger than the diffusivities for the diffusion of Ag through amorphous TiO2 films. The activation energy for the

Influence of wide band gap oxide substrates on the photoelectrochemical properties and structural disorder of CdS nanoparticles grown by the successive ionic layer adsorption and reaction (SILAR) method

• Mikalai V. Malashchonak,
• Alexander V. Mazanik,
• Olga V. Korolik,
• Еugene А. Streltsov and
• Anatoly I. Kulak

Beilstein J. Nanotechnol. 2015, 6, 2252–2262, doi:10.3762/bjnano.6.231

• nm thickness and a lateral size of 1–2 μm (Figure 1b,e). The length of the anodic TiO2 nanotubes is about 2 μm (Figure 1f), and their inner diameter is several tens of nanometers (Figure 1c). The calculated Brunauer–Emmelt–Teller (BET) specific surface area is as large as 119 ± 8 m2/g for In2O3 and

• detected using a thermostated CCD matrix with a signal acquisition time typically equal to 120 s. Calibration was performed by means of a built-in gas discharge lamp to an accuracy of ≈1 cm−1. SEM images of In2O3 mesoporous films (a,d), ZnO platelet crystallites (b,e) and anodic TiO2 nanotubes (c,f

Transformation of hydrogen titanate nanoribbons to TiO₂ nanoribbons and the influence of the transformation strategies on the photocatalytic performance

• Melita Rutar,
• Nejc Rozman,
• Matej Pregelj,
• Carla Bittencourt,
• Romana Cerc Korošec,
• Andrijana Sever Škapin,
• Aleš Mrzel,
• Srečo D. Škapin and
• Polona Umek

Beilstein J. Nanotechnol. 2015, 6, 831–844, doi:10.3762/bjnano.6.86

• . Since the first report on the synthesis of titanate nanotubes by Kasuga et al. [9], this pathway has become more interesting mostly due to its high synthesis yield and the possibility of using sodium titanate nanotubes as a precursor for the preparation of TiO2 nanotubes. Titanates, with the formula

Palladium nanoparticles anchored to anatase TiO₂ for enhanced surface plasmon resonance-stimulated, visible-light-driven photocatalytic activity

• Kah Hon Leong,
• Hong Ye Chu,
• Shaliza Ibrahim and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2015, 6, 428–437, doi:10.3762/bjnano.6.43

• plasmonic Au nanoparticles deposited on top of TiO2 [27]. While Mohapatra et al. had synthesized TiO2 nanotubes with palladium (Pd) NPs for the photocatalytic decomposition of azo dyes under sunlight irradiation. Pd/TiO2 nanotubes showed a faster degradation time (150 min) to completely decompose azo dye as

• compare to TiO2 nanotubes (250 min) [28]. Similarly, Kwak et al. found that by incorporating Pd into TiO2 led to an improved hydrogen production compared to pure TiO2 [29]. Hence, it is clear that the inclusion of noble metals either as dopant or composite contributes to an enhanced visible-light

Optical modeling-assisted characterization of dye-sensitized solar cells using TiO₂ nanotube arrays as photoanodes

• Jung-Ho Yun,
• Il Ku Kim,
• Yun Hau Ng,
• Lianzhou Wang and
• Rose Amal

Beilstein J. Nanotechnol. 2014, 5, 895–902, doi:10.3762/bjnano.5.102

• ) revealed that the amount of dye and TNT lengths were critical factors influencing the performance of DSSCs, which is consistent with the experimental results. Keywords: charge generation; dye-sensitized solar cells; generalized transfer matrix method; optical process; photocatalysis; TiO2 nanotubes

Nanostructure sensitization of transition metal oxides for visible-light photocatalysis

• Hongjun Chen and
• Lianzhou Wang

Beilstein J. Nanotechnol. 2014, 5, 696–710, doi:10.3762/bjnano.5.82

• tubular structure of TiO2 nanotubes and 2D layered titanate nanosheets were also used for the photosensitization. The CdS quantum dots photosensitized TiO2 nanotubes by covalent bonding [21] or a sonication-assisted sequential chemical bath deposition approach [31] led to a more efficient separation of

• photogenerated electrons from CdS to TiO2 nanotubes, and exhibited a much enhanced photocurrent generation and photocatalytic efficiency under visible-light irradiation. Kamat et al. compared the performances of CdS photosensitized ordered arrays of tubular TiO2 architectures with a CdS photosensitized

• water in TiO2 nanotubes with the addition of Au nanoparticles under 633 nm illumination, but a 4-fold reduction in the photocatalytic activity under UV radiation [66]. They ascribed the improvement of visible-light photocatalytic activity to the increase of the electron–hole pair generation rate by the

Functionalization of vertically aligned carbon nanotubes

• Eloise Van Hooijdonk,
• Carla Bittencourt,
• Rony Snyders and
• Jean-François Colomer

Beilstein J. Nanotechnol. 2013, 4, 129–152, doi:10.3762/bjnano.4.14

• et al. [120] carried electrophoretic coating of VA-CNTs with TiO2 NPs in order to create coaxial nanowires. In parallel, they synthesized aligned TiO2 nanotubes and nanomembranes, using the VA-CNT film as a template. All these products have novel photocurrent and photoinduced properties. More

Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications

• Yaron Paz

Beilstein J. Nanotechnol. 2011, 2, 845–861, doi:10.3762/bjnano.2.94

• growth of titanium dioxide was limited to the inner walls of the polycarbonate filter. In that way, the performance of 100–800 ALD cycles followed by the etching away of the polycarbonate template with chloroform yielded TiO2 nanotubes, whose diameter could be predetermined according to the diameter of

• patterned OH-terminated SAMs [83]. Although SAMs were used to obtain patterned TiO2, mainly by directing the deposition of titania, it is possible to pattern TiO2 by directing its etching instead of its growth (Figure 7). An interesting example is the patterning of an area made of TiO2 nanotubes, formed by