Application of coke breeze for removal of colour from coke plant wastewater.

Treatment of coking waste water has always been a challenge because of its complex and toxic nature. Numbers of technologies like biological treatment, advanced oxidation processes, activated carbon treatment etc. are available for removal of color and organic contaminants from wastewater.

In situ photodecyanation of steel industry wastewater in a pilot scale.

The photodegradation of cyanide from steel industry wastewater was explored in pilot plant scale using hydrogen peroxide (HO) under UV irradiation. However, it was interesting to notice that only HO or only UV was inefficient to degrade the cyanide from industrial wastewater. There was a synergy between HO and UV radiation for the degradation of cyanide.

A strategically designed porous iron-iron oxide matrix on graphene for heavy metal adsorption.

The iron oxide nanoparticles were transformed to a matrix of iron-iron oxide on the graphene surface at an elevated temperature in a H(2)/Ar atmosphere. The resultant iron-iron oxide dispersed graphene was highly porous, robust and attractive for a variety of potential applications.

Can commonly used hydrazine produce n-type graphene?

A simple chemical method to obtain bulk quantities of N-doped, reduced graphene oxide (rGO) sheets (see figure) as an n-type semiconductor through the treatment of as-prepared GO sheets with the commonly used reducing reagent hydrazine, followed by rapid thermal annealing (RTA) is described.

A non-volatile memory device consisting of graphene oxide covalently functionalized with ionic liquid.

We introduce non-volatile resistive crossbar memory based on ionic liquid covalently functionalized on a partially reduced graphene oxide (PrGO). The write-read-erase-read (WRER) cycles were very stable after several hundred cycles and the retention time of both the ON and OFF states was stable for over 1000 s, indicating that the device we developed can function as a non-volatile memory device.

Synthesis and characterization of hexa-tailed cryptand based amphiphiles: spontaneous formation of giant vesicular microcapsule with efficient and long-term dye encapsulation.

A cryptand with six secondary amino groups has been derivatized by reacting with acid chlorides of different chain lengths (C(7), C(10) and C(18)) to get three cryptand based hexa-tailed neutral amphiphiles (L(1)-L(3)). The cavity of the cryptand head group accommodates two Cu(II) ion giving another set of three amphiphiles. These amphiphiles and its copper complexes can aggregate spontaneously as giant vesicular microcapsules in 10% ethanolic water medium.