Metal−organic framework (MOF) UiO-66/graphitic carbon nitride (g-C3N4) hybrids show enhanced photoactivity for hydrogen evolution using visible light. The efficient charge transfer from photoexcited g-C3N4 to UiO-66 MOF is responsible for the enhancement in photocatalytic hydrogen production. The qusi-polymeric nature of the present hybrids makes MOFs a potential candidate to construct active photocatalysts. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.