id="par0005">A covalently linked Co-porphyrin/low-molecular-weight carbon nitride hybrids was prepared for the first time.
id="par0010">The hybrids possessed improved photocatalytic activity compared with bulk C3N4 and Co-porphyrin loaded C3N4.
id="par0015">The efficient electron transfer/trapping by the Co active sites and the CO2 affinity account for the enhanced activity.