Metal-organic frameworks (MOFs) are widely known for their record storage capacities of small gas molecules (H , CO , and CH ). Assembly of such porous materials onto well-known chemiresistive gas sensing elements such as SnO could be an attractive prospect to achieve novel sensing properties as this affects the surface chemistry of SnO . Cobalt-imidazole based ZIF-67 MOF was grown onto preformed SnO nanoparticles to realize core-shell like architecture and explored for greenhouse gas CO sensing. CO sensing over SnO is a challenge because its interaction with SnO surface is minimal. The ZIF-67 coating over SnO improved the response of SnO up to 12-fold (for 50 % CO ). The SnO @ZIF-67 also showed a response of 16.5±2.1 % for 5000 ppm CO (threshold limit value (TLV)) at 205 °C, one of the best values reported for a SnO -based sensor. The observed novel CO sensing characteristics are assigned to electronic structure changes at the interface of ZIF-67 and SnO .

Pore surface functionalization of a metal–organic framework (MOF) with an amine moiety has turned an innocent MOF into a chemiresistive sensor for acidic gases.

Detectors with rapid detection time, low detection limits, high selectivity and sensitivity towards CO2 gas are important for health and safety applications for instance in the food industry and to...

Hydrogen is in limelight as an environmental benign alternative to fossil fuels from few decades. To bring the concept of hydrogen economy from academic labs to real world certain challenges need to be addressed in the areas of hydrogen production, storage, and its use in fuel cells. Crystalline metalorganic frameworks (MOFs) with unprecedented surface areas are considered as potential materials for addressing the challenges in each of these three areas. MOFs combine the diverse chemistry of molecular linkers with their ability to coordinate to metal ions and clusters. The unabated flurry of research using MOFs in the context of hydrogen energy related activities in the past decade demonstrates the versatility of this class of materials. In the present review, we discuss major strategical advances that have taken place in the field of "hydrogen economy and MOFs" and point out issues requiring further attention.

Selective hydrogenation of alkynes into alkenes in continuous flow conditions over non-precious metal catalysts is an attractive prospect for the chemical industry, especially for the petrochemical and polymer industry. Achieving...