Category Chemistry/Nanotechnology

Clean, Sustainable Fuels made ‘from Thin Air’ and Plastic Waste

Carbon capture from air and its photoelectrochemical conversion into fuel with simultaneous waste plastic conversion into chemicals.
Carbon capture from air and its photoelectrochemical conversion into fuel with simultaneous waste plastic conversion into chemicals.
Credit: Ariffin Mohamad Annuar

Researchers have demonstrated how CO2 can be captured from industrial processes – or even directly from the air – and transformed into clean, sustainable fuels using just the energy from the Sun.

The researchers, from the University of Cambridge, developed a solar-powered reactor that converts captured CO2 and plastic waste into sustainable fuels and other valuable chemical products. In tests, CO2 was converted into syngas, a key building block for sustainable liquid fuels, and plastic bottles were converted into glycolic acid, which is widely used in the cosmetics industry.

Unlike earlier tests of their solar fuels tec...

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A New Way to Develop Drugs Without Side Effects

A new way to activate G protein-coupled receptors from inside the cell.

Have you ever wondered how drugs reach their targets and achieve their function within our bodies? If a drug molecule or a ligand is a message, an inbox is typically a receptor in the cell membrane. One such receptor involved in relaying molecular signals is a G protein-coupled receptor (GPCR). About one-third of existing drugs work by controlling the activation of this protein. Japanese researchers now reveal a new way of activating GPCR by triggering shape changes in the intracellular region of the receptor. This new process can help researchers design drugs with fewer or no side effects.

If the cell membrane is like an Oreo cookie sandwich, GPCR is like a snake with seven segments traversing in and out of the...

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Protein-based Nano-‘computer’ evolves in ability to Influence Cell Behavior

Jiaxing Chen uses fluorescence microscopy to visualize fixed cells on nanopatterns.
Jiaxing Chen uses fluorescence microscopy to visualize fixed cells on nanopatterns.  Credit: Penn State Huck Institutes of the Life Sciences / Penn State

The first protein-based nano-computing agent that functions as a circuit has been created by Penn State researchers. The milestone puts them one step closer to developing next-generation cell-based therapies to treat diseases like diabetes and cancer.

Traditional synthetic biology approaches for cell-based therapies, such as ones that destroy cancer cells or encourage tissue regeneration after injury, rely on the expression or suppression of proteins that produce a desired action within a cell. This approach can take time (for proteins to be expressed and degrade) and cost cellular energy in the process...

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Researchers develop Calcium Rechargeable Battery with Long Cycle Life

Schematic of a prototype Ca metal battery. The battery comprises a Ca2+ storing positive electrode containing the CuS cathode and Ca metal anode with a hydrogen cluster electrolyte. Cycling performance of the Ca-CuS battery. Credit: Kazuaki Kisu

A research group has developed a prototype calcium (Ca) metal rechargeable battery capable of 500 cycles of repeated charge-discharge—the benchmark for practical use.

The breakthrough was reported in the journal Advanced Science on May 19, 2023.

With the use of electric vehicles and grid-scale energy storage systems on the rise, the need to explore alternatives to lithium-ion batteries (LIBs) has never been greater. One such replacement is Ca metal batteries...

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