Engineered Nanomaterials: a Discussion of the Major Categories of Nanomaterials

Voorde, Marcel Van de; Tuliński, Maciej; Jurczyk, M.

doi:10.1002/9783527800308.ch3

Cited by 5 publications

(4 citation statements)

References 63 publications

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“…The nanomaterials exhibit novel physical, chemical, and biological properties [ 32 , 33 ]. The reason for the unusual properties of nanomaterials may be attributed to the basic phenomena of “quantum confinement” and “surface-interface effects” [ 34 , 35 , 36 ]. These two characteristics may alter the mechanical, optical, electrical, magnetic, and chemical catalysis properties of nanoscale materials compared to their bulk counterparts [ 37 , 38 ].…”

Section: Nanomaterials: Can Nanosizing Matter Alter Its Propertiesmentioning

confidence: 99%

Zinc-Based Nanomaterials for Diagnosis and Management of Plant Diseases: Ecological Safety and Future Prospects

Kalia

Abd-Elsalam

Kuča

2020

JoF

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A facet of nanorenaissance in plant pathology hailed the research on the development and application of nanoformulations or nanoproducts for the effective management of phytopathogens deterring the growth and yield of plants and thus the overall crop productivity. Zinc nanomaterials represent a versatile class of nanoproducts and nanoenabled devices as these nanomaterials can be synthesized in quantum amounts through economically affordable processes/approaches. Further, these nanomaterials exhibit potential targeted antimicrobial properties and low to negligible phytotoxicity activities that well-qualify them to be applied directly or in a deviant manner to accomplish significant antibacterial, antimycotic, antiviral, and antitoxigenic activities against diverse phytopathogens causing plant diseases. The photo-catalytic, fluorescent, and electron generating aspects associated with zinc nanomaterials have been utilized for the development of sensor systems (optical and electrochemical biosensors), enabling quick, early, sensitive, and on-field assessment or quantification of the test phytopathogen. However, the proficient use of Zn-derived nanomaterials in the management of plant pathogenic diseases as nanopesticides and on-field sensor system demands that the associated eco- and biosafety concerns should be well discerned and effectively sorted beforehand. Current and possible utilization of zinc-based nanostructures in plant disease diagnosis and management and their safety in the agroecosystem is highlighted.

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Section: Nanomaterials: Can Nanosizing Matter Alter Its Propertiesmentioning

confidence: 99%

Zinc-Based Nanomaterials for Diagnosis and Management of Plant Diseases: Ecological Safety and Future Prospects

Kalia

Abd-Elsalam

Kuča

2020

JoF

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“…At least one of the components must be a semiconductor (or dielectric) that provides a condition for sufficiently long life-time for the excited state of the heterostructure which is necessary to initiate a further chemical sequence. The AB heterostructures can be classified based on the configuration and dimensions of the interface between two components, A and B, as follows (see Figure 1): one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) heterostructures [25][26][27][28][29][30][31]. In a one-dimensional heterostructure, the interface is of line-like shape, that is, the contact area is extended in one direction and not expanded in two others.…”

Section: Introductionmentioning

confidence: 99%

Photoactive Heterostructures: How They Are Made and Explored

et al. 2021

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In our review we consider the results on the development and exploration of heterostructured photoactive materials with major attention focused on what are the better ways to form this type of materials and how to explore them correctly. Regardless of what type of heterostructure, metal–semiconductor or semiconductor–semiconductor, is formed, its functionality strongly depends on the quality of heterojunction. In turn, it depends on the selection of the heterostructure components (their chemical and physical properties) and on the proper choice of the synthesis method. Several examples of the different approaches such as in situ and ex situ, bottom-up and top-down, are reviewed. At the same time, even if the synthesis of heterostructured photoactive materials seems to be successful, strong experimental physical evidence demonstrating true heterojunction formation are required. A possibility for obtaining such evidence using different physical techniques is discussed. Particularly, it is demonstrated that the ability of optical spectroscopy to study heterostructured materials is in fact very limited. At the same time, such experimental techniques as high-resolution transmission electron microscopy (HRTEM) and electrophysical methods (work function measurements and impedance spectroscopy) present a true signature of heterojunction formation. Therefore, whatever the purpose of heterostructure formation and studies is, the application of HRTEM and electrophysical methods is necessary to confirm that formation of the heterojunction was successful.

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“…However, their difference from other materials is essential to fully understanding their significance. Their properties may differ from those of larger particles [10]. Nanomaterials have a variety of properties such as hardness and ductility of metals and alloys, plasticity and superplasticity of ceramics (mechanical) or enhanced selectivity, empty carrier spheres for specific drugs and their controlled release (sterical) ([11], p. 58).…”

Section: Introductionmentioning

confidence: 99%

“…6(3) and Art. 9(1) Directive 89/391/EEC[10], the employer determines whether hazardous chemical agents are present at the workplace and, if so, assesses the risks to the safety and health of workers arising from the presence of those agents, taking into account certain elements of Art 4(1) of Council Directive 98/24/EC[17]. The European Union also has a Directive 2004/37/EC of the European Parliament and of the Council[22].…”

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confidence: 99%

European Legal Protection of Employees’ Health Working with Nanoparticles in the Context of the Christian Vision of Human Work

Jarota

2021

Nanoethics

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The article analyses European regulations concerning the health protection at work with nanomaterials in the context of the Christian vision of human work. The increasingly widespread presence of nanotechnology in workplaces requires serious reflection on the adequacy of employers’ measures to protect workers’ health from the risks in the workplace. The lack of clear guidance in European legislation directly concerning work with nanoparticles is problematic. Moreover, the health consequences for workers using nanomaterials in the work process are not fully explored in science. It is therefore essential to consider what values should accompany employers in shaping working conditions and what values should be legislated when creating occupational health and safety (OH&S) law. First of all, how should the employers deal with the unknown? Should they abandon nanomaterials for which they do not have adequate information at all until the consequences for workers’ health have been established? Should such action be limited to situations where studies indicate the toxicity of the nanomaterials present in the working environment? In this context, the article analyses values and objectives indicated by the teaching of the Catholic Church. The publication presents a Christian vision on the protection of workers’ health and their place in the work process. Europe has been under the influence of Christianity for many centuries now. The Catholic Church’s view of human labour continues to be present in public debates in Europe. The Christian view of human labour is focused on the working man and his dignity. Irrespective of other concepts of labour, Christianity assumes the priority of a human being over capital. The Catholic Church analyses the working man as going beyond the Earthly context, which is not typical for such doctrines as liberalism or Marxism. The author’s article is an attempt in answering the question about how up to date the Catholic Church’s views on human labour are in the light of nanotechnology development in the workplace.

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Engineered Nanomaterials: a Discussion of the Major Categories of Nanomaterials

Cited by 5 publications

References 63 publications

Zinc-Based Nanomaterials for Diagnosis and Management of Plant Diseases: Ecological Safety and Future Prospects

Zinc-Based Nanomaterials for Diagnosis and Management of Plant Diseases: Ecological Safety and Future Prospects

Photoactive Heterostructures: How They Are Made and Explored

European Legal Protection of Employees’ Health Working with Nanoparticles in the Context of the Christian Vision of Human Work

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