▎ 摘　　要

NOVELTY - A sensitive material comprises characterized sensitive composition comprises graphene load tungsten trioxide, bismuth trioxide, zirconium trioxide and tin trioxide, where the sensitive material is prepared by adding natural graphite with concentrated sulfuric acid under continuous stirring, heating with ammonium nitrate and continuing stirring by slowly warming, adding natural graphite with potassium permanganate, and heating by stirring, followed by adding deionized water, continuing stirring by slowly warming, stirring the thermostat, and cooling the obtained product. USE - Sensitive material for cataluminescence of formaldehyde, benzene and ammonia in air. ADVANTAGE - The material has rapid and accurate determination effect. DETAILED DESCRIPTION - A sensitive material comprises characterized sensitive composition comprises graphene load 13-21 mass% tungsten trioxide, 10-16 mass% bismuth trioxide, 5-10 mass% zirconium trioxide and 40-55 mass% tin trioxide, where the sensitive material is prepared by adding natural graphite with concentrated sulfuric acid at 5-10 degrees C for 2-3 hours under continuous stirring, heating with ammonium nitrate and continuing stirring by slowly warming to 35-50 degrees C, adding 3-5 times natural graphite with potassium permanganate, and heating by stirring for 1.5-2 hours, followed by adding deionized water, continuing stirring by slowly warming to 75-90 degrees C, stirring the thermostat fro 1 h, cooling the obtained product to room temperature, adding dropwise 15-25 mass% aqueous hydrogen peroxide till no bubbles up, filtering the product to obtain filtrate, washing the filtrate with water until neutral, to obtain graphene oxide, dissolving 10 mass% aqueous hydrochloric acid of tungsten salt, bismuth salts, zirconium salts and tin salts under continuous stirring to obtain dissolved solution, clarifying the solution by ultrasonic vibration, adding and stirring high-speed graphene oxide with 25 mass% hydrazine hydrate aqueous solution, continuing stirring for 2 hours after adding dropwise 20 wt.% aqueous ammonia to adjust pH to 6.5-7.2, continuing stirring for 1 hour, allowing the solution to stand for aging for 6- 8 hours, filtering to obtain filtrate, drying the filtrate after grinding, heating the dried filtrate in box-type resistance furnace at a rate of less than 3 degrees C per minute to 250-280 degrees C, and heating to 450-470 degrees C within 4-5 hours at a speed of 3 degrees C/minute, naturally cooling the heated filtrate to obtain finished product.