Method for preparing SnS/SnO2 nano-photocatalysis composite material through microwave hydrothermal method

• Main Authors: HUANG JIANFENG, KONG XIN'GANG, CHAI SIMIN, ZHANG HAO, YIN LIXIONG, MA JIANZHONG, WANG FEIFEI, ZHANG DONGDONG
• Format: Patent
• Language: English
• Published: 25.11.2015
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for preparing a SnS/SnO2 nano-photocatalysis composite material through a microwave hydrothermal method. The method includes the steps that (1) the Sn source solution A, the S source solution B and the NaSO4 solution C are prepared; (2) the solution A and the solution B are mixed in proportion to obtain a solution D, and the solution A and the solution C are mixed in proportion to obtain a solution E; (3) the solution D and the solution E are placed in a microwave hydrothermal reaction kettle, the hydrothermal reaction kettle is sealed, and a precursor is obtained through a microwave-hydrothermal reaction; (4) after the reaction kettle is naturally cooled to be at an indoor temperature, the precursor is taken out, and products SnS and SnO2 are obtained through centrifugal washing, separating and drying; (5) the products SnS and SnO2 are physically mixed in proportion, and accordingly the SnS/SnO2 nano-photocatalysis composite material is obtained. The particle size of the material ranges from about several nanometers to dozens of nanometers. The composite material is high in purity, high in crystallinity and uniform in morphological structure. The composite material is applied to organic dye degradation and has excellent photocatalytic degradation performance.