▎ 摘　　要

NOVELTY - Developing hydrogen exfoliation graphene based photocatalyst, comprises (a) synthesizing hydrogen exfoliation graphene from graphite oxide through a gas purging method at 200 degrees C temperature, (b) mixing of different weight (0.25-1.25 g) of hydrogen exfoliation graphene with titanium oxide and copper sulfate to produce hydrogen exfoliation graphene coupled copper loaded titanium oxide based photo catalyst, and (c) producing methanol by the reaction of carbon dioxide and photocatalyst using operating conditions of variation of catalyst dose (1-10 g/l), temperature (25-50 degrees C), reaction time (30-240 minute), and carbon dioxide flow rate (1-4 l/m), pH (3-8). USE - The process is useful for developing hydrogen exfoliation graphene based photocatalyst. ADVANTAGE - The process: minimize the difficulties arises for low surface area, low catalytic activity of the developed heterogeneous catalyst for maximum catalytic conversion of the feed; developed nano-composite material that produce methanol with a high yield which could be solve the energy and environmental crisis by recycling carbon dioxide to fuels; provides hydrogen exfoliation graphene used as coupled material of copper loaded titanium oxide that enhance the electron capture and transport properties which substantially increase the photo induced charge transfer and extend the life time of photo generated charge carriers; provides economically improved heterogeneous photocatalyst with improved photo-catalytic conversion efficiency; provides a unique ratio for the preparation of photocatalyst; provides an improved method which is enriched the yield and productivity of solar fuels, like methanol, ethanol etc. through improved hydrogen exfoliation graphene based novel photocatalyst; provides high conversion of carbon dioxide to methanol; and is economical/commercial.