Biography:

Mr. Aqrab ul Ahmad studied Physics at the Govt College University Faisalabad, Pakistan and graduated as MS in 2015. He then joined the research group of Prof. Hongwei Liang at the Institute of Physics and optoelectronics technology, Dalian university of technology China. Now days, he is final year PhD scholar in this institution. During his period in PhD he has published more than 8 papers in SCI journal

Abstract:

This paper presents a facile, two-step mechano-chemical route to exfoliate and fluorinate hexagonal boron nitride nanosheets (BNNSs).The influence of fluorine (F) chemisorption on the optical and magnetic properties of BNNSs is investigated. It has been observed experimentally, by increasing fluorine concentration, band gap lowers from ~5to4.17 eV and saturation magnetization and coercivity achieves the value of 1.8322x10-3 emu/g and 157.25Oe, respectively. Furthermore, results strongly supported that during synthesis there is a direct correlation between different number of few atomic layers and adsorption of fluorine atoms towards fluorination of BNNSs. Moreover the defective boron sites are thermodynamically most stable and favorable for fluorine adsorption to form stable B-F bonds as compared to N-F bonds. Such observations are additionally supported by theoretical calculations considering various possible fluorine-based defects in h-BN nanostructure. Hence, a narrow optical band gap with a room temperature weak ferromagnetic diluted magnetic semiconducting behavior of BNNSs via fluorination will expand their usage in designing/fabricating magnetic, electronic and nano-devices.

Keywords: BNNSs; exfoliation; ball milling; fluorination and band gap calculation.

 

 

Biography:

Mr. Aqrab ul Ahmad studied Physics at the Govt College University Faisalabad, Pakistan and graduated as MS in 2015. He then joined the research group of Prof. Hongwei Liang at the Institute of Physics and optoelectronics technology, Dalian university of technology China. Now days, he is final year PhD scholar in this institution. During his period in PhD he has published more than 8 papers in SCI journal

Abstract:

This paper presents a facile, two-step mechano-chemical route to exfoliate and fluorinate hexagonal boron nitride nanosheets (BNNSs).The influence of fluorine (F) chemisorption on the optical and magnetic properties of BNNSs is investigated. It has been observed experimentally, by increasing fluorine concentration, band gap lowers from ~5to4.17 eV and saturation magnetization and coercivity achieves the value of 1.8322x10-3 emu/g and 157.25Oe, respectively. Furthermore, results strongly supported that during synthesis there is a direct correlation between different number of few atomic layers and adsorption of fluorine atoms towards fluorination of BNNSs. Moreover the defective boron sites are thermodynamically most stable and favorable for fluorine adsorption to form stable B-F bonds as compared to N-F bonds. Such observations are additionally supported by theoretical calculations considering various possible fluorine-based defects in h-BN nanostructure. Hence, a narrow optical band gap with a room temperature weak ferromagnetic diluted magnetic semiconducting behavior of BNNSs via fluorination will expand their usage in designing/fabricating magnetic, electronic and nano-devices.

Keywords: BNNSs; exfoliation; ball milling; fluorination and band gap calculation.

 

 

Biography:

Mr. Muhammad Usman, Former Director General of Agricultural Research System, Government of Pakistan who retired from service after a spotless career of about 32 years with senior level experience on research and development of integrated agricultural production, industries, Agriculture & Horticulture and bioenergy on a sustainable way.Mr. Usman is consider as the senior most scientist in the world, always participated in the international conferences as a plenary speaker, keynote speaker, renowned speaker, organizing committee member as well as moderator of the conferences around the world. Mr. Usman established “Prominent Agro Based Industries, Agro Based Industries and Consultancy SDN BHD” in Malaysia and “Foundation for Rural Development in Pakistan”, with primarily aims to work on integrated agricultural project for Rural Development through improvement in agriculture and consultancy services to the formers at Malaysia.

 

 

 

Abstract:

The aim of presentation consist of chemistry, health, life, employment, income, crises, poverty and hunger were studied and concluded that Chemistry is the major industry for the development of health, basic need of daily life, create employment, generate income, stronger economy, reducing financial crises, global Poverty and hunger in the developing countries of the world particularly in south Asia. The study reported that Chemistry is the science of the composition, structure, properties and reactions of matter, especially of atomic and molecular systems. In a very simple words, chemistry is the composition, structure, properties and reactions of substance. The main branches of chemistry/industries, including i. Analytical Chemistry uses qualitative and quantitative, observation to identify and measure the physical. ii. Physical chemistry combines chemistry with physics. iii. Organic chemistry specifically studies compounds that contain the element carbon. iv. Inorganic chemistry studies materials such as metals and gases that do not have carbon as part of their makeup. v. Biochemistry is the study of chemical processes that occur within living organisms. vi. Food chemistry deals with the three biological components of food — carbohydrates, lipids and proteins. vii. Environmental chemistry study how chemicals interact with the natural environment. viii. Agricultural chemistry is concerned with the substances and chemical reactions that are involved with the production, protection and use of crops and livestock. ix. Chemical engineering research and develop new materials or processes that involve chemical reactions. x. Geochemistry combine chemistry and geology to study the makeup and interaction between substances found in the Earth. xi. Nuclear Chemistry is one of a typical classification of chemical science. It primarily utilized for radioactivity which include x-ray, radiotherapy, radioactive components (radon) and so forth. The study reported that the total countries available in the world are 225, consist of (Developed countries = 49, developing countries = 150, observer state = 4, state without partial recognition = 8, unrecognized state = 14). Similarly, South Asia comprises the countries of Pakistan, Bangladesh, India, Bhutan, Maldives, Nepal and Sri Lanka.  In the light of above study, it is proposed that Nutritional Science and Food Chemistry should be commercialized  for the development of health, basic need of daily life, create employment, generate income, stronger economy, reducing financial crises, global Poverty and hunger in the developing countries of the world particularly in south Asia.