“…Microbes in water are just thousand nanometer small while ordinary purifiers just lead with bacteria purifiers using nanotechnology are able to deal with virus without using any chemical, high temperature crushes and electricity. Photo-Impetuses and their studies on different fields is indicated in following studies ( Shahzad et al ., 2019 , 2020 ; Sagir et al ., 2014 ; Tahir et al, 2018a , Tahir et al, 2018b , Tahir et al, 2018c , Tahir et al, 2019a , Tahir et al, 2019b , Tahir et al, 2019c , Tahir et al, 2019d , Tahir et al, 2019e , Tahir et al, 2019f , Tahir and Sagir, 2019g , Tahir et al, 2019h , Tahir et al, 2020a , Tahir et al, 2020b , Tahir et al, 2020c , Tahir et al, 2020d ).…”