The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

• Nabojit Das,
• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

• ethylene glycol in a molar ratio of 1:2 for electrodeposition of a zinc–nickel alloy to provide corrosion protection [90]. Due to the ever-rising interest in DESs for nanomaterial synthesis, a fundamental understanding regarding interfacial behavior and mass transport, such as ionic adsorption, surface

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

Silver nanoparticles nucleated in NaOH-treated halloysite: a potential antimicrobial material

• Yuri B. Matos,
• Rodrigo S. Romanus,
• Mattheus Torquato,
• Edgar H. de Souza,
• Rodrigo L. Villanova,
• Marlene Soares and
• Emilson R. Viana

Beilstein J. Nanotechnol. 2021, 12, 798–807, doi:10.3762/bjnano.12.63

• preferential nucleating spots for silver. These mechanisms are: (1) hydroxylation of the HNT surface, that is, by exposing the clay particles to NaOH, hydroxy groups are grafted on the surface [33][34][35], which will later work as nucleating sites for Ag-NPs; (2) corrosion-induced crystalline defects, that is

• , by exposing the HNT clay particles to NaOH, a corrosion process is triggered that slowly etches the external crystalline phase [31], inducing defects in the crystalline structure, which expose the internal hydroxy layer of HNT to silver nucleation [23]; (3) unfolding of HNT into nanosheets, that is

Nanogenerator-based self-powered sensors for data collection

• Yicheng Shao,
• Maoliang Shen,
• Yuankai Zhou,
• Xin Cui,
• Lijie Li and
• Yan Zhang

Beilstein J. Nanotechnol. 2021, 12, 680–693, doi:10.3762/bjnano.12.54

• for the design of sterilization and algae removal [72], wastewater treatment [73][74], and electrochemical corrosion protection of metal surfaces and battery cathodes [56][75][76]. TENG-based special flexible pressure sensors can be placed on the surface of human skin to monitor the physiological

A review on nanostructured silver as a basic ingredient in medicine: physicochemical parameters and characterization

• Gabriel M. Misirli,
• Kishore Sridharan and
• Shirley M. P. Abrantes

Beilstein J. Nanotechnol. 2021, 12, 440–461, doi:10.3762/bjnano.12.36

• release of Ag+ in solution and exposure of unoxidized metallic silver, which may undergo additional oxidation leading to the corrosion of AgNPs [50]. This oxidative dissolution can be influenced by extrinsic factors, such as artificial/solar light and storage temperature as well as by intrinsic factors

Paper-based triboelectric nanogenerators and their applications: a review

• Jing Han,
• Nuo Xu,
• Yuchen Liang,
• Mei Ding,
• Junyi Zhai,
• Qijun Sun and
• Zhong Lin Wang

Beilstein J. Nanotechnol. 2021, 12, 151–171, doi:10.3762/bjnano.12.12

• 2D P-TENGs in self-powered electrochemistry Metal corrosion is a common phenomenon and a considerable amount of resources are necessary in order to prevent it. Therefore, the development of technologies to protect metals against corrosion has a significant economic importance and has attracted

• attention from different sectors. Cathodic protection is an effective and a traditional method to keep metals from corrosion. It can be obtained by an external direct current or a by a passive sacrificial anode [155][156][157]. However, traditional cathodic protection needs external electricity, which is

• problems. Some examples of self-powered systems have been introduced to solve this problem by integrating P-TENGs into an anti-corrosion protection system. Feng et al. have reported P-TENGs that can readily convert kinetic energy into electricity to protect A3 steel from corrosion and biofouling [93]. A

Atomic layer deposited films of Al₂O₃ on fluorine-doped tin oxide electrodes: stability and barrier properties

• Hana Krýsová,
• Michael Neumann-Spallart,
• Hana Tarábková,
• Pavel Janda,
• Ladislav Kavan and
• Josef Krýsa

Beilstein J. Nanotechnol. 2021, 12, 24–34, doi:10.3762/bjnano.12.2

• found up to 24 h and even after 168 h of exposure the changes in the blocking behaviour were still minimal. This behaviour was also observed for protection against direct reduction of FTO. Keywords: Al2O3; atomic layer deposition (ALD); barrier properties; corrosion; electrochemistry; FTO

• ; Introduction Surface coverage by thin films for the improvement of mechanical, optical, and electrochemical properties of solid surfaces is of great technological importance. In this context, corrosion, which is an electrochemical process, is the main concern. In an oxidizing and humid atmosphere

• of electrified interfaces is particularly challenging, because electron or hole transport through the coating must be maintained. Previously, ALD and other coating techniques have been shown to protect a semiconducting hematite electrode against corrosion and photocorrosion by using titanium dioxide

Bio-imaging with the helium-ion microscope: A review

• Matthias Schmidt,
• James M. Byrne and
• Ilari J. Maasilta

Beilstein J. Nanotechnol. 2021, 12, 1–23, doi:10.3762/bjnano.12.1

• clusters in microbes [47] or mitochondria [48] by HIM-SIMS. Nevertheless, the current mass resolution of the spectrometers allows for several interesting applications in biology, which comprise biomineralisation, microbial corrosion, and interactions between nanoparticles and cells or tissues. Alternative

Oxidation of Au/Ag films by oxygen plasma: phase separation and generation of nanoporosity

• Abdel-Aziz El Mel,
• Said A. Mansour,
• Mujaheed Pasha,
• Atef Zekri,
• Janarthanan Ponraj,
• Akshath Shetty and
• Yousef Haik

Beilstein J. Nanotechnol. 2020, 11, 1608–1614, doi:10.3762/bjnano.11.143

• : metal alloys; nanoporous; oxygen plasma; silver; thin films; Introduction Silver corrosion upon exposure to atomic oxygen is a phenomenon that was highly studied in the 1980s. At that time, the main aim was to avoid the degradation of silver interconnects and switches used in satellites navigating in

• a few have reported on the oxidation of silver alloys [15][20][21]. Gao et al. investigated the oxidation of Ag/Cu alloy by exposure to atomic oxygen. They demonstrated that the resistance of silver against corrosion by atomic oxygen was improved due to the presence of copper in the alloy [21]. From

• a fundamental point of view, gold/silver is a peculiar model system to study corrosion processes since gold is a noble metal. Interestingly, by using different types of Au/Ag nanoparticles, Lewis et al. showed how one can control and engineer, at the nanometer scale, the final shape and structure of

Fabrication of nano/microstructures for SERS substrates using an electrochemical method

• Jingran Zhang,
• Tianqi Jia,
• Xiaoping Li,
• Junjie Yang,
• Zhengkai Li,
• Guangfeng Shi,
• Xinming Zhang and
• Zuobin Wang

Beilstein J. Nanotechnol. 2020, 11, 1568–1576, doi:10.3762/bjnano.11.139

• , Changchun, Jilin 130021, P.R. China Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, P.R. China School of Mechanical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P.R. China 10.3762/bjnano.11.139 Abstract Based on an

One-step synthesis of carbon-supported electrocatalysts

• Sebastian Tigges,
• Nicolas Wöhrl,
• Ivan Radev,
• Ulrich Hagemann,
• Markus Heidelmann,
• Thai Binh Nguyen,
• Stanislav Gorelkov,
• Stephan Schulz and
• Axel Lorke

Beilstein J. Nanotechnol. 2020, 11, 1419–1431, doi:10.3762/bjnano.11.126

• results in a high density of anchoring sites for the co-deposited metal nanoparticles, which are partially embedded subsequently in the pristine carbon support with a high graphitization degree, and therefore, with high corrosion stability. Consequently, embedding Pt-NP in the C-matrix not only results in

• threshold value for catalyst corrosion via Pt dissolution of 2 nm reported in the literature [16][34], which is not the case for HiSPEC4000 (mean particle diameter of 4.5 nm). After 10,000 cycles, no significant ECSA value could be measured for any of the catalysts. Furthermore, during the first 500 cycles

• , the ECSA of samples CV1 and CV2 increases (see Figure 8), which likely results from the uncovering of partially carbon-coated Pt surfaces due to carbon corrosion during these cycles. These 500 cycles are seen as a positive feature of the Pt/CNW layers, as the ECSA increases from an already high

Structural and electronic properties of SnO₂ doped with non-metal elements

• Jianyuan Yu,
• Yingeng Wang,
• Yan Huang,
• Xiuwen Wang,
• Jing Guo,
• Jingkai Yang and
• Hongli Zhao

Beilstein J. Nanotechnol. 2020, 11, 1321–1328, doi:10.3762/bjnano.11.116

• , high transmittance of visible light, good thermal stability, acid–base corrosion resistance, high material hardness, and easiness of preparation processes [5]. Non-metal atoms, such as fluorine (F) and nitrogen (N), were proved to be proper elements for doping. After doping with heteroatoms, the

Influence of the magnetic nanoparticle coating on the magnetic relaxation time

• Mihaela Osaci and
• Matteo Cacciola

Beilstein J. Nanotechnol. 2020, 11, 1207–1216, doi:10.3762/bjnano.11.105

• nanoparticles to the acidic environment of living organisms, certain structural degradation processes occur due to the corrosion of nanoparticle surfaces. This biodegradation in acidic media leads to significant changes in the nanoparticle magnetic properties over time [9]. Since the nanoparticle surfaces are

Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers

• Stefanie Schlicht,
• Korcan Percin,
• Stefanie Kriescher,
• André Hofer,
• Claudia Weidlich,
• Matthias Wessling and
• Julien Bachmann

Beilstein J. Nanotechnol. 2020, 11, 952–959, doi:10.3762/bjnano.11.79

• etching. The surface roughness has increased, thereby increasing the specific surface area. The acid treatment also generates a homogeneously thin and stable TiO2 layer, which provides corrosion resistance while maintaining low transfer coefficients [24]. After coating with the catalyst layer (Figure 1c

Structural optical and electrical properties of a transparent conductive ITO/Al–Ag/ITO multilayer contact

• Aliyu Kabiru Isiyaku,
• Ahmad Hadi Ali and
• Nafarizal Nayan

Beilstein J. Nanotechnol. 2020, 11, 695–702, doi:10.3762/bjnano.11.57

• improve the transport from the lower to the upper part of the device [9]. The good adhesion, low resistivity, and the stability against oxidation and corrosion of Al films make them suitable for application in optical and electronic devices [18][19][20]. The low resistivity and relatively high

Size effects of graphene nanoplatelets on the properties of high-density polyethylene nanocomposites: morphological, thermal, electrical, and mechanical characterization

• Tuba Evgin,
• Alpaslan Turgut,
• Georges Hamaoui,
• Zdenko Spitalsky,
• Nicolas Horny,
• Matej Micusik,
• Mihai Chirtoc,
• Mehmet Sarikanat and
• Maria Omastova

Beilstein J. Nanotechnol. 2020, 11, 167–179, doi:10.3762/bjnano.11.14

• , anti-statics, light-emitting devices, and corrosion-resistant coatings [1][2]. The addition of a conductive filler to the polymeric matrix is one of the easiest methods to produce these nanocomposites. Among conductive filler materials, carbon-based materials are attractive since they show significant

Influence of the epitaxial composition on N-face GaN KOH etch kinetics determined by ICP-OES

• Markus Tautz,
• Maren T. Kuchenbrod,
• Joachim Hertkorn,
• Robert Weinberger,
• Martin Welzel,
• Arno Pfitzner and
• David Díaz Díaz

Beilstein J. Nanotechnol. 2020, 11, 41–50, doi:10.3762/bjnano.11.4

• corrosion of this otherwise relatively stable material. They also change the local electronic structure of the material. However, no precise understanding of the fundamental chemical reaction and the impact of multiple parameters has yet been generated. Many of the industrial processes still lack

Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

• Maximilian Wassner,
• Markus Eckardt,
• Andreas Reyer,
• Thomas Diemant,
• Michael S. Elsaesser,
• R. Jürgen Behm and
• Nicola Hüsing

Beilstein J. Nanotechnol. 2020, 11, 1–15, doi:10.3762/bjnano.11.1

• Figure 10), where they were covered by a layer of N-doped TiO2 (TiON@NCS) [34] or N-doped TaxOy (TaON@NCS) [33]. The covering was supposed to serve two purposes, first, to yield ORR activity and, second, to protect the (nitrided) carbon core against corrosion. In this study we used the same procedure for

Advanced hybrid nanomaterials

• Andreas Taubert,
• Fabrice Leroux,
• Pierre Rabu and
• Verónica de Zea Bermudez

Beilstein J. Nanotechnol. 2019, 10, 2563–2567, doi:10.3762/bjnano.10.247

• for sensing or corrosion protection. To understand composite formation of a complex hybrid assembly, high quality characterization is paramount. An example is small angle X-ray scattering (SAXS), which was used in the work “Mechanism of silica–lysozyme composite formation unraveled by in situ fast

Label-free highly sensitive probe detection with novel hierarchical SERS substrates fabricated by nanoindentation and chemical reaction methods

• Jingran Zhang,
• Tianqi Jia,
• Yongda Yan,
• Li Wang,
• Peng Miao,
• Yimin Han,
• Xinming Zhang,
• Guangfeng Shi,
• Yanquan Geng,
• Zhankun Weng,
• Daniel Laipple and
• Zuobin Wang

Beilstein J. Nanotechnol. 2019, 10, 2483–2496, doi:10.3762/bjnano.10.239

• nanoindentation process and chemical redox reaction to machine a hierarchical SERS substrate. The micro/nanostructures are first formed on a Cu(110) plane and then Ag nanoparticles are generated on the structured copper surface. The effect of the indentation process parameters and the corrosion time in the AgNO3

• on the Cu(110) plane by changing the period of the force signal and the machining feed. Ag nanoparticles were generated via redox on the cavities and pile-up of the Cu(110) surface. Different structures of silver nanoparticles and copper surfaces can be produced by changing the corrosion time, and

• electron microscopy (SEM) images of the arrayed triangular cavities fabricated by different feeds before and after five minutes of corrosion time in AgNO3 solution are shown in Figure 1. Figure 1a shows SEM images of arrayed triangular cavities before corrosion of HCl and AgNO3. The triangular cavities

Polyvinylpyrrolidone as additive for perovskite solar cells with water and isopropanol as solvents

• Chen Du,
• Shuo Wang,
• Xu Miao,
• Wenhai Sun,
• Yu Zhu,
• Chengyan Wang and
• Ruixin Ma

Beilstein J. Nanotechnol. 2019, 10, 2374–2382, doi:10.3762/bjnano.10.228

• photoanode and CH3NH3PbX3 (X = I, Br) as light absorbing material to derive perovskite dye-sensitized solar cells with conversion efficiencies of 3.81% (X = I) and 3.13% (X = Br). However, the corrosion of the perovskite material used in the electrolyte results in a poor stability of the devices [5]. In July

Oblique angle deposition of nickel thin films by high-power impulse magnetron sputtering

• Hamidreza Hajihoseini,
• Movaffaq Kateb,
• Snorri Þorgeir Ingvarsson and
• Jon Tomas Gudmundsson

Beilstein J. Nanotechnol. 2019, 10, 1914–1921, doi:10.3762/bjnano.10.186

• ], corrosion-resistant coatings [3][4], optically transparent conductive electrodes [5], contact devices [6], Li-storage materials [7], and as selective absorbers in solar thermal energy conversion [8]. Moreover, a number of nickel-containing alloys exploit the ferromagnetic properties of nickel such as NiTi

BiOCl/TiO₂/diatomite composites with enhanced visible-light photocatalytic activity for the degradation of rhodamine B

• Minlin Ao,
• Kun Liu,
• Xuekun Tang,
• Zishun Li,
• Qian Peng and
• Jing Huang

Beilstein J. Nanotechnol. 2019, 10, 1412–1422, doi:10.3762/bjnano.10.139

• [10]. As one of the most promising photocatalysts, in terms of its chemical stability, non-toxicity, photo-corrosion resistance in aqueous media and advanced oxidation properties, titanium dioxide (TiO2) has been widely studied [11][12] and employed for water splitting [13], energy storage [14], and

Alloyed Pt₃M (M = Co, Ni) nanoparticles supported on S- and N-doped carbon nanotubes for the oxygen reduction reaction

• Stéphane Louisia,
• Yohann R. J. Thomas,
• Pierre Lecante,
• Marie Heitzmann,
• M. Rosa Axet,
• Pierre-André Jacques and
• Philippe Serp

Beilstein J. Nanotechnol. 2019, 10, 1251–1269, doi:10.3762/bjnano.10.125

• be done without compromise to the catalyst layer performance and durability. It is known that catalyst degradation via platinum dissolution and carbon corrosion plays an important role in the voltage degradation of PEMFCs [6][7][8]. CB, which is widely used, particularly for its low cost, suffers

• from thermochemical instability and corrosion in fuel cell applications. In the cathodic layer, the oxidizing, wet and acidic environment, the high electrochemical potential, and the high platinum loading all lead to the oxidation of the carbon surface, and occasionally to the formation of CO2 [9

• ]. This carbon corrosion modifies the mass transport properties of the active layer, especially for the water management, and accelerates the degradation of the Pt NPs [10][11]. One way to reduce the Pt content is to use more active, tailored NPs [12][13], for example, bimetallic NPs with a core–shell

A highly efficient porous rod-like Ce-doped ZnO photocatalyst for the degradation of dye contaminants in water

• Binjing Hu,
• Qiang Sun,
• Chengyi Zuo,
• Yunxin Pei,
• Siwei Yang,
• Hui Zheng and
• Fangming Liu

Beilstein J. Nanotechnol. 2019, 10, 1157–1165, doi:10.3762/bjnano.10.115

• most suitable catalysts in many industries given its inexpensive, non-toxic, efficient and anti-corrosion properties [7]. Nevertheless, it still has some disadvantages with respect to photocatalysis. For example, it has a narrow response range, low quantum efficiency, and its photogenerated electron