▎ 摘　　要

NOVELTY - Improved process for the preparation quantum dots of titanium dioxide in rod shape, comprises reacting titanium trichloride with graphene oxide and a solvent which is water at room temperature with 20 minutes sonication, after 24 hours, separating the obtained white colored product by centrifugation and drying an oven at 80 degrees C. USE - The method is useful for preparation quantum dots of titanium dioxide which is useful as an antibacterial agent (all claimed), in electronic industry, in healthcare products by light-activation, and in agriculture and pest management in presence of light. Test details are described but no results given. ADVANTAGE - The method: utilizes very low concentration of titanium trichloride to graphene oxide (where the ratio of titanium trichloride to graphene oxide is 12.8:1); utilizes 7.79% graphene oxide for synthesizing quantum dots of titanium dioxide with 90% yield; provides quantum dots of titanium dioxide which exhibits photosensitive nature, exhibits antibacterial activity which is observed light sensitive as shown in table 1 of the specification (claimed), provides healthcare products by light-activation due to smaller size and high surface area, and is less cytotoxic, and thus quantum dots of titanium dioxide is used in healthcare (till 10 mu g/ml toxicity i.e. very low); provides a feasible mode of preparation of photoactive rod shaped quantum dos from readily available raw materials; provides a solution to properly utilize carbon wastes and water as a solvent for photosensitive quantum dot synthesis with high yield; and is highly efficient and cost effective.