Development　of　superior　heterogeneous　photocatalyst　for　hydrogen　(H-2)　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　H-2　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　H-2　production　with　a　HER　of　about　400　mu　mol　h(-1)　than　pristine　ND　(197　mu　mol　h(-1)).　Additionally,　this　H-2　generation　dramatically　enhances　the　quantum　yield,　indicating　the　H-2　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.　(C)　2020　Hydrogen　Energy　Publications　LLC.　Published　by　Elsevier　Ltd.　All　rights　reserved.