Indian scientists develop environmentally friendly methods for sunny hydrogen peroxide production | Science and Environmental News
New Delhi: Researchers at the SN Bose National Basic Science Center for Basic Sciences at the Ministry of Science and Technology (DST) have discovered an effective, less energy-intensive and environmentally friendly way to integrate hydrogen peroxide – a chemical that is crucial to the industry that causes coma, paper, paper, paper, paper, paper, paper, paper, paper, paper.
Hydrogen peroxide (H2O2) is a multifunctional oxidant widely used in environmental disinfection, chemical synthesis, paper bleaching and fuel cells.
The team designed and prepared a series of covalent organic frameworks (COFs) that have good hydro affinity by carefully controlling the hydrogen chain connection density and studied their impact on the photocatalytic properties of H2O2 generation. COF is a new class of porous and ordered polymers with modifiable catalytic sites and mild harvesting properties within the visible range. It has become a promising photocatalyst.
Currently, the growth of the H2O2 market is driven by awareness of disinfection, the increase in the number of surgeries and the epidemic of infections acquired by hospitals. More than 95% of H2O2 is produced industrially using anthraquinone oxidation process, which is very energy-consuming, expensive and produces many hazardous chemicals as by-products.
Therefore, scientists have been looking for an environmentally friendly and economical strategy to generate H2O2 from renewable resources with minimal environmental impact.
The study observed that the COF connected by the sound jacket provides abundant docking sites for water and oxygen, thereby promoting water oxidation reaction (WOR) and oxygen reduction reaction (ORR) – two main pathways for photocatalyzing H2O2 generation.
As a result, when irradiated with a 40 W blue LED, the COF associated with the suspended COF exhibits extraordinary photocatalytic H2O2 production without an external sacrificial electron donor.
Interestingly, “There is also a large amount of H2O2 produced under sunlight, which outperforms most organic photocatalysts under similar conditions, thus demonstrating a clean and sustainable pathway.”
They showed that COF associated with the synthetic sound jacket could generate a large amount of H2O2 using benzyl alcohol solution (water: benzyl alcohol = 90:10).
This method also prevents the degradation of H2O2. “The strategy of using hydrated alcohol solution mixing will help develop continuous flow reactors that can sustainably produce H2O2 and will reveal strategies for lab-to-industry technology transfer to benefit humans,” the researchers said.
