Design of SnO 2 decorated, preferentially grown, boron nitride nanosheets with ultrahigh photocatalytic activity Bikramjeet Singh 1 , Gurpreet Kaur 1 , Paviter Singh 1 , Kulwinder Singh 1 , Manjeet Kumar 2 , Rajni Bala 3 , Ramovatar Meena 4 , Paulraj Rajamani 4 , Akshay Kumar *1 1 Advanced Functional Materials Lab. Department of Nanotechnology, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140 407, Punjab, India 2 Department of Electrical Engineering, Incheon National University, Incheon, 406772, South Korea 3 Department of Mathematics, Punjabi University, Patiala-147 002, Punjab, India 4 Nanotoxicology laboratory, School of Environmental Sciences,Jawaharlal Nehru University, New Delhi-110 067, India Email: akshaykumar.tiet@gmail.com Abstract Boron nitride is maximum explored material these days because of its extraordinary optical, mechanical, chemical properties. The material is so sensitive to its structure that slight change in its lattice parameter unexpectedly change its properties like change in c/a ratio, change the material form soluble in water to insoluble. Present study deals with preferentially grown nanostructured BN along (002) and (102) plane. This preferentially growth is one of the major parameter for its extraordinary response to change light energy to chemical energy. As a result a material which has no catalytic activity when grown along (002) plane. When mixed with SnO 2 (tetragonal) is dissociated into smaller sheets and reorient to (102) plane. The SnO 2 particles attached both side of BN sheets to provide more surface area to make this material extra ordinary catalyst. This preferentially grown BN/SnO 2 composite along (102) degrades methyl orange