UNIST scientists have developed an exiting new catalyst that can split water into hydrogen almost as good as platinum, but less costly and found frequently on Earth.
As described in the journal Nature Nanotechnology, this ruthenium (Ru)-based material works almost as efficient as platinum and likely shows the highest catalytic performance without being affected by the pH of the water.
The research team, led by Professor Jong-Beom Baek of the Energy and Chemical Engineering at UNIST has synthesized Ru and C?N, a two-dimensional organic structure, to verify its performance as a water-splitting catalyst. With the aid of this new catalyst, entitled [email protected] it is now possible to efficiently produce hydrogen.
The technology for producing hydrogen from water requires a good catalyst for commercial competitiveness. These water-splitting catalysts must exhibit high hydrogen conversion efficiency and excellent durability, operate well under low-voltage, and should be economical.
The Pt-based catalysts used in the hydrogen generation reaction are highly expensive noble metals, resulting in additional costs and difficulty of mass production. They are also less stable in an alkaline environment.
One solution, many researchers suggest, was to build catalysts made of cheap, non-noble metals. However, because these materials corrode rapidly under acidic condition and operate at very-high voltages, productivity was limited.
The [email protected]?N, developed by Professor Baek is a high-performance material that satisfies all four commercial competitiveness of water-splitting catalysts.
This material exhibits high turnover frequency (TOF) as high as Pt and can be operated on low-voltage supply. In addition, it is not affected by the pH of the water and can be used in any environment.
The synthesis process of [email protected] is simple. Professor Baek and his colleagues simply mixed the ruthenium salt (RuCl?) with the monomers which forms the porous two-dimensional organic structure, C?N. The [email protected] catalyst is then produced after going through reduction and heat treatment processes.
The researchers used the same process to build [email protected] (M = Co, Ni, Pd, Pt) catalysts, using cobalt (Co), nickel (Ni), lead (Pb) and platinum (Pt). When comparing their efficiency of hydrogen production, the [email protected] catalyst exhibited the highest catalytic performance at the lowest overvoltage, as well as superior catalytic activity.
“Our study not only suggests new directions in materials science, but also presents a wide range of possibilities from basic to applied science,” says Professor Baek. “This material is expected to attract attention in many areas thanks to its scientific potential.”
Receive an email update when we add a new WATER SPLITTING article.
The Latest on: Water splitting
via Google News
The Latest on: Water splitting
- Why The Bachelorette star Ali Oetjen isn’t ready to date seven months after shock spliton February 27, 2021 at 3:02 am
The former Bachelorette relocated from Victoria to live in her parents’ Maleny house at the end of last year following her split from Taite Radley, who she met on the dating show. This month Oetjen ...
- Biden administration approves 90/10 split for Hurricane Laura reimbursementon February 27, 2021 at 12:02 am
Hunter says the latest move by the Biden administration will mean a great deal for local residents, schools, and non-profits.
- American Rescue Plan hits the House floor as lawmakers split along party lineson February 26, 2021 at 5:32 pm
The battle over the American Rescue Plan hit the House floor Friday. “We will take a vote to reduce the spread of this virus, to put, as we keep saying, vaccinations ...
- Seafloor Microbes Are Living On The Products Of Irradiated Wateron February 26, 2021 at 8:40 am
The team is still working to explain why, but they think minerals in the sediment enhance the water-splitting activity. If true, this could prove very interesting to scientists working on finding ...
- Boosting photocatalytic hydrogen production from water by photothermally induced biphase systemson February 26, 2021 at 3:08 am
The solar-driven H2 production from water by particulate photocatalysts is an effective approach to produce H2 fuel. Here, the authors propose an integrated photothermal–photocatalytic biphase system, ...
- Water Authority to Split $44.4M Among Local Agencies After Win in Legal Battle With MWDon February 25, 2021 at 5:17 pm
The San Diego County Water Authority's board announced a plan to distribute a rebate of $44.4 million to its 24 member agencies across the region.
- Congress on Track to Approve Millions More in Federal Funding for Water Debt Reliefon February 25, 2021 at 9:17 am
Even before an initial round of funding is distributed to states and tribes, Congress is preparing to add another $500 million to a first-ever federal assistance program for low-income households that ...
- Breakthrough Boost for Solar-Powered Fuel Made by Splitting Wateron February 23, 2021 at 4:01 pm
Pritzker School of Molecular Engineering research could help make hydrogen useful, sustainable fuel. Hydrogen is an incredibly powerful fuel, and the ingredients are everywhere—in plain old water.
- Tillman Co. rural water customers asked to conserve, boil wateron February 23, 2021 at 1:50 pm
According to officials, Tillman County Rural Water District 1 is dealing with a shortage of water due to them not being able to receive any water from the town of Frederick. They say they are going to ...
via Bing News