Process for the preparation of blue-flourescence emitting carbon dots (CDTS) from sub-bituminous tertiary high sulfur Indian coals

US10655061B2 · kind B2 · utility

Assignee

• COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH · IN

Inventors

• Binoy K. SAIKIA · Dudhnai, IN
• Tonkeswar DAS · Dudhnai, IN
• Sonali Roy · Dudhnai, IN
• Bardwi Narzary · Dudhnai, IN
• Hari Prasanna Dekaboruah · Dudhnai, IN
• Manobjyoti Bordoloi · Dudhnai, IN
• Jiumoni Lahkar · Dudhnai, IN
• Dipankar Neog · Dudhnai, IN
• Danaboyina Ramaiah · Thrissur, IN

Key dates

• Filing date: Sep 14, 2017
• Grant date: May 19, 2020
• Expiry date: Aug 3, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/95
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention relates to a process for the preparation of blue-fluorescence emitting carbon dots (CDTs) from sub-bituminous tertiary high sulfur Indian coals. More particularly, the present invention relates to the production of characteristics carbon dots from low-quality Indian coals by an ultrasonic-assisted wet-chemical method. Also, the present invention provides a simple and environmentally benign method for fabrication of characteristics and size-controlled carbon dots.