Method for producing black phosphorus

US10968102B2 · kind B2 · utility

Inventors

• Ming-Yu Lin · Bakersfield, US
• Hejun WANG · Nanhu, CN
• Xinyue Lin · Bakersfield, US
• Xinyang Lin · Bakersfield, US
• Yifei Wang · Pomona, US
• Sam Zhang · Bakersfield, US
• Ruoyu Xu · Monterey Park, US
• Jizhou Yang · Monterey Park, US
• Yixiang Wang · Fremont, US

Key dates

• Filing date: Jun 17, 2019
• Grant date: Apr 6, 2021
• Expiry date: Jun 17, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/40
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of producing black phosphorus which includes the steps of: weighing and mixing reaction raw materials which comprises metallic tin, red phosphorus and monocrystalline iodine, wherein a weight ratio of tin: red phosphorus: iodine is 0.6-3.5: 5-45: 0.1-0.8; feeding the mixture to a high-temperature resistant metal reaction tube; removing air by introducing inert gas and sealing the reaction tube tightly; placing the metal reaction tube inside a muffle furnace for carrying out calcination reaction by first increasing a temperature at a preset rate to a maximum temperature and keeping warm and then decreasing a temperature at a preset rate and keeping warm, then to room temperature so that the black phosphorus is produced. The conversion rate is very high and the quality of the produced product is classified as high quality.