Название: Carbon Quantum Dots for Sustainable Energy and Optoelectronics
Автор: Sudip Kumar Batabyal, Basudev Pradhan, Kallol Mohanta, Rama R. Bhattacharjee
Издательство: Woodhead Publishing/Elsevier
Серия: Woodhead Publishing Series in Electronic and Optical Materials
Год: 2023
Страниц: 500
Язык: английский
Формат: pdf (true)
Размер: 38.1 MB

Carbon Quantum Dots for Sustainable Energy and Optoelectronics reviews the synthesis, properties, and applications of carbon nanodots. This book provides readers with an overview of the key advances in the development of carbon quantum dots including synthesis and surface engineering strategies such as pyrolysis-based synthesis, biomass-based synthesis, functionalization, and other methods toward large-scale development of these carbon nanomaterials. The emerging applications of carbon quantum dots in different fields, such as energy harvesting, energy storage, and biomedical applications, are thoroughly reviewed, emphasizing the impact of enhanced properties of carbon quantum dots for these applications. Carbon Quantum Dots for Sustainable Energy and Optoelectronics is suitable for graduate students, materials scientists, and engineers working in academia and industry. This book is also beneficial for the interdisciplinary community of researchers and practitioners working in the field of nanotechnology.

Nanotechnology has the potential to fulfill the overwhelming demand for energy and basic commodities and advancing technology without affecting our environment, climate, and natural resources. The global sustainability challenges our world faces today can be solved by nanotechnology as an environmentally acceptable technique. The main components of nanotechnology in the battle are the nanomaterials and quantum dots. Quantum dots, few nanometers in size, are particles where quantum mechanics are predominant, with the associated quantum mechanical waves confined in nano-dimensions and generating size-dependent discrete energy levels. Generally, in a quantum dot, the energy gap between the conduction band and the valence band or the gap between the HOMO and LUMO is dependent on the particle size. The electronic waves associated with the free electrons on the particles are confined within the boundary of the particle (dimension of the particle) and the energy associated with them is quantized according to the size of the particle. So, the optical and electronic properties of the quantum dots differ largely from their bulk counterparts. The quantum dots have the properties lying somewhere between the bulk and the atom/molecules, and they vary with size and shape. Now the carbon quantum dots (CQDs) have emerged as a game changer among different quantum dots and other allotropes of nanocarbon because of simple and sustainable fabrication methods involved. There are different types of allotropes of nanocarbon such as carbon nanotube, buckminsterfullerene, graphene and nanodiamond used in nano-engineering facilitating sustainable development. Carbon, the group 14 member of the periodic table, has a very interesting electronic structure and multiple valance and coordination numbers.

This book solely focuses on the different aspects of CQDs facilitating sustainable development of our society. First, this book discusses the structure-property relation- ship of CQDs in optical domains in detail. As the photophysical properties of CQDs are the most interesting and studied ones, we focused on understanding the photophysical properties and their origin. This book also discusses the theoretical modeling of the CQDs from a basic to an advanced level. The synthesis of CQDs is more beneficial compared to other nanomaterials, especially carbon nanomaterials like CNT and graphene, as it does not require sophisticated instrumentation and technology. A facile and cost-effective synthesis method for CQDs makes them very popular among researchers. The third chapter of the book delivers the details of the synthesis method of CQDs. Following the synthesis, the physical properties and different characterization techniques of CQDs are covered. As the properties of the CQDs are predominantly controlled by the surface states of the CQDs, this book pays special attention to the surface functionalization of CQDs in the next chapter. Most of the fabrication methods of CQDs are sustainable ones, but if we want to highlight the role of CQDs in sustainable development, it is mainly derived from the different application aspects of the CQDs. We focus on the application of CQDs in energy harvesting, energy storage, and wastewater treatment to biosensing in other chapters. Biomedical applications of CQDs ranging from bioimaging to theranostics are covered in subsequent chapters. The magnetic applications of CQDs and composites of CQDs are also discussed. Finally, the CQD-based optical and electronic nanodevices are discussed with a special focus on terahertz applications and single electron transistor applications. Another form of carbon nanoparticle, nano-diamond, is explored for photonic and biomedical applications. The book concludes with a summary of recent advancements and future prospects of CQDs for sustainable applications.




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