N and S co-doped nanosheet-like porous carbon derived from sorghum biomass: mechanical nanoarchitecturing for upgraded potassium ion batteries

Abstract

Nanosheet-like sorghum biomass obtained by mild alkaline treatment and high-energy ball milling is heteroatom-doped with N and S during pyrolysis. The resulting N, S co-doped carbon shows a significantly improved K-ion storage as an anode material in potassium ion batteries.

Highly Efficient N-Doped Carbon-Supported Subnanometer Cobalt–Zinc Bimetallic Catalysts for Decarbonylation of Fatty Acids into Long-Chain Olefins

“…During high-temperature pyrolysis, Co@ZIF-8 was subjected to in situ carbothermal nitriding, and N atoms were partially riveted to the C skeleton or partially coordinated to isolated Co atoms, resulting in the formation of Co–N/C (Figure S13). , The doping of N atoms into the carbon supports created numerous defective sites, facilitating electron transfer, , while the N atoms coordinated with isolated Co atoms formed the active sites Co–N/C for decarbonylation. The improved catalytic decarbonylation performance of the Co–N/C sites can be attributed to the electron acceptor–donor mechanism during N-doping .…”

Dual carbon engineering enabling 1T/2H MoS2 with ultrastable potassium ion storage performance

“…5,6 Nevertheless, the size of potassium ions (with a radius of 1.40 Å) significantly exceed that of lithium ions (0.78 Å). 7 This size difference engenders challenges during the potassiation/depotassiation processes, inducing sluggish diffusion kinetics and enormous volume changes within the electrode material. 8 Thus, obtaining high capacity and desirable stability remains a formidable hurdle for PIBs.…”

Supramolecular Structural-Based Graphene Oxide Lamellar Membrane for Removing Environmental Pollutants from Wastewater

“…However, these methods have a few drawbacks, such as low efficiency, tediousness, and expense. Apart from these, membrane technology is one of the most promising methods for separation and desalination of water, and it offers high separation efficiency for trace hazardous pollutants and small ions. − Moreover, it offers several advantages in comparison with other separation techniques, including ease of operation, low energy consumption, integrated facilities, low investment, low maintenance, and low operational cost. − Several studies suggest that the ideal desalination membrane should be thin, have a controlled pore size, be highly stable, and be mechanically robust, along with high separation efficiency and permeability for removing small ions and contaminants from water. , As a result, it has become imperative to focus on the development of membrane systems that possess precise control over the pore size, regular shape, and number of diffusion channels. These enhanced features are essential requirements in order to achieve highly efficient filtration processes.…”