▎ 摘　　要

NOVELTY - Preparing non-noble metal copper modified carbon-based composite material by e.g. ultrasonically preparing copper ion solution for further use, ultrasonically dispersing sulfur-indium-zinc/carbon-based composite material in water, mixing with the prepared copper ion solution, after ultrasonication, moving into the photo-reactor, nitrogen bubbling to remove dissolved oxygen, under the magnetic stirring and illumination condition, slowly injecting the reducing solution, performing light deposition reaction for 5-180 minutes to obtain the nano-copper modified zinc-indium zinc/carbon-based composite material; centrifuging and separating the sulfur-indium-zinc/carbon-based composite material modified by nano copper, washing and removing residual salt by ultra-pure water and anhydrous ethanol, drying in a vacuum oven overnight to obtain the non-noble metal copper modified carbon-based composite material. USE - Preparing non-noble metal copper modified carbon-based composite material. ADVANTAGE - The sulfur-zinc-indium in the composite material absorbs the copper ions released after the photoelectron excited by the visible light and is transferred by the carbon-based material, reduces the loss of the copper, improves the stability and dispersibility of the nano-copper particles and strengthens the sterilizing ability. DETAILED DESCRIPTION - Preparing non-noble metal copper modified carbon-based composite material comprises: (1) dissolving zinc salt, indium salt and sulfur source in water uniformly, magnetically stirring to obtain mixed solution, adjusting the pH to 0.5-5, introducing carbon-based material, continuously stirring, transferring the mixed solution to the hydrothermal reaction vessel and moving to the oven to react; (2) cooling to room temperature, centrifuging and separating precipitate, using ultra-pure water, washing with anhydrous ethanol to obtain dark yellow solid, placing it in a vacuum oven and drying overnight to obtain the sulfur-indium-zinc/carbon-based composite material; (3) dissolving the copper salt in ultra-pure water, ultrasonically preparing copper ion solution for further use, ultrasonically dispersing the sulfur-indium-zinc/carbon-based composite material in the water, mixing with the prepared copper ion solution, after ultrasonication, moving into the photo-reactor, nitrogen bubbling to remove dissolved oxygen, under the magnetic stirring and illumination condition, slowly injecting the reducing solution, performing light deposition reaction for 5-180 minutes to obtain the nano-copper modified zinc-indium zinc/carbon-based composite material; and (4) centrifuging and separating the sulfur-indium-zinc/carbon-based composite material modified by nano copper, washing and removing residual salt by ultra-pure water and anhydrous ethanol, drying in a vacuum oven overnight to obtain the non-noble metal copper modified carbon-based composite material. INDEPENDENT CLAIMSare also included for: non-noble metal copper modified carbon-based composite material; and use method of non-noble metal copper modified carbon-based composite material comprising placing non-noble metal copper modified carbon-based composite material in the water containing harmful bacteria, under the irradiation of visible light, the constant temperature water bath maintains the normal temperature of water, phosphate buffered saline (PBS) buffer solution keeps the pH of water as 7.4, performing multi-phase catalytic killing to the pathogen in the water, after the killing reaction is finished, separating and recycling the non-noble metal copper based composite material.