Development　of　superior　heterogeneous　photocatalyst　for　hydrogen　(H2)　evolution　with　promising　pollutant　degradable　capacity　is　a　significant　feature　but　then　again　thought-provoking　for　shaping　the　energy　and　environmental　issues.　In　this　regard,　a　photocatalytic　H2　evolution　using　nano　diamond　(ND)　semiconducting　materials　having　pollutant　degradable　capacity　for　Rhodamine　B　dye　(RhB)　has　been　rarely　reported　and　hence　predicted　to　the　sustainable　energy.　Productive　characteristics　such　good　chemical　stability,　super　hardness,　nanometer　size,　biocompatibility　and　thermal　conductivity,　ND　is　a　capable　and　highly　valuable　powder　physical　material.　Non-uniform　and　agglomeration　dispersion　spread　of　ND　in　different　solvents　are　the　main　problems　preventing　ND　from　the　wide-use　in　commercial　applications.　Upon　535　nm　solar　light　excitation,　the　fabricated　ND　sample　exhibit　remarkable　photocatalytic　H2　production　with　a　HER　of　about　400　μmol　h−1　than　pristine　ND　(197　μmol　h−1).　Additionally,　this　H2　generation　dramatically　enhances　the　quantum　yield,　indicating　the　H2　terminated　sites　work　as　electron　reservoirs.　Precisely,　the　kinetic　constant　pseudo-order　of　FND　for　photodegradation　of　RhB　was　higher　as　compared　with　pristine　ND.　As　such,　the　results　show　an　important　step　toward　tailor-designed　and　explain　the　vital　role　of　FND　composites　for　the　rational　motifs　of　fruitful　photocatalyst　with　effective　pollutant　degradable　capability　for　future　demand.　©　2020　Hydrogen　Energy　Publications　LLC