▎ 摘　　要

NOVELTY - Preparing nano gold/reduced graphene oxide paper-based electrochemical sensor comprises (i) dispersing cellulose pulp in water, adding graphene oxide and stirring to make graphene oxide and cellulose uniformly mixed, adding binder and continuously stirring until the water becomes clear to obtain a slurry, pouring slurry into the paper sheet forming machine to make paper, and drying to obtain graphene oxide paper after drying, (ii) soaking graphene oxide paper in chloroauric acid solution to fully absorb chloroauric acid solution, (iii) flattening graphene oxide paper adsorbed with the chloroauric acid solution on the glass surface, and placing in laser direct writing machine for patterned reduction to obtain patterned reduced graphene oxide electrode containing nano-gold particles, and (iv) adding patterned reduced graphene oxide electrode containing nano-gold particles into chloroauric acid solution until the surface of the electrode changes from gray to golden yellow, and and drying. USE - The nano gold/reduced graphene oxide paper-based electrochemical sensor is useful in electrochemical sensing of hydrogen peroxide (claimed). ADVANTAGE - The method does not need to add reduction agent simplifies the nano-gold modified process, and the obtained sensor surface modified nano- gold is more uniform. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a nano gold/reduced graphene oxide paper-based electrochemical sensor.