using raman spectroscopy and computational techniques to study interfacial water on pd single-crystal surfaces
a, Schematic of the Raman experimental setup. CE, counter electrode; RE, reference electrode; WE, working electrode. b, 3D-finite-difference time-domain (3D-FDTD) simulation of electromagnetic field distribution 2 × 2 array of SHINs on the Pd/Au substrate, where E and E0 denote the localized electric field and the incident electric field. c, Schematic of the interfacial model of the Pd/Au surface. Pd, Au, O, H and Na atoms are shown in silver, yellow, red, white and purple, respectively. E, electric field. Credit: Nature (2021). DOI: 10.1038/s41586-021-04068-z

A team of researchers affiliated with a number of institutions in China and one in the U.K. has used Raman spectroscopy and computational techniques to study the interfacial water on Pd single-crystal surfaces. In their paper published in the journal Nature, the group describes their study of the dynamics and structure of water at the solid-liquid interface and what they learned from it. Matthias Waegele, with Boston College has published a News and Views piece in the same journal issue discussing the recent history of using spectroscopic techniques to stretch the bonds between hydrogen and oxygen and giving an overview of the work done by the group working on this new effort.

As the researchers note, better understanding the dynamics and structure of water at the solid-liquid interface has become an important component of research in a wide variety of areas, including catalysis. In this new effort, they have expanded on the use of spectroscopic water analysis techniques by using a flat metal electrode (palladium atoms on a gold substrate) to serve as a catalyst. They then added relevant computational techniques to manipulate the spectroscopic data. This allowed for disassociating water in a sample into molecular hydroxide and hydrogen. In so doing they found their technique helped them to probe more deeply into interfacial water samples.

In using their technique, the researchers found that a network of water molecules worked to connect intermolecular hydrogen bonds that surrounded the electrode under low sodium ion concentrations. They also found that at higher concentrations, hydrated sodium ions were attracted to the electrode which resulted in bringing the hydrogen and palladium atoms closer together. And that led to speeding up the transfer of electrons between the water molecules and the electrode which led to the disassociation of the water into hydroxide ions and hydrogen atoms. That further led to the formation of hydrogen molecules. The researchers note that this finding suggests their technique could be used as a new form of electrocatalysis—a means of accelerating chemical reactions that result in converting energy from a renewable power source into a green fuel—in this case hydrogen. They also suggest that their technique could be used to speed up the reaction rates of electrocatalytic reactions in general. More information: Yao-Hui Wang et al, In situ Raman spectroscopy reveals the structure and dissociation of interfacial water, Nature (2021). DOI: 10.1038/s41586-021-04068-z

Matthias M. Waegele, Choreographing water molecules to speed up hydrogen production, Nature (2021). DOI: 10.1038/d41586-021-03511-5 Journal information: Nature

TECH NEWS RELATED

Microsoft Azure review

Get a choice of networks with Microsoft’s customizable CDN

View more: Microsoft Azure review

All 2021 Game Awards Nominees

Image via The Game Awards The Game Awards 2021 are returning live and in person after a year of all-digital displays. Host of the event, Geoff Keighley, is pulling out all the stops for his annual award to celebrate the show’s return. In anticipation of the highly-anticipated award show, ...

View more: All 2021 Game Awards Nominees

Forza Horizon 5 has the biggest launch in Xbox history with over 10 million players in the first week

Image via Microsoft The official Forza Horizon Twitter account posted a tweet revealing that the latest installment in the franchise has had the biggest first-week launch in Xbox and Xbox Game Pass history. Over 10 million players have played Forza Horizon 5 in its first week, making it one ...

View more: Forza Horizon 5 has the biggest launch in Xbox history with over 10 million players in the first week

Can you get free Robux without downloading apps?

Everyone is on the hunt for obtaining Robux, but can you get some without having to download an app? We answer that question in this post!

View more: Can you get free Robux without downloading apps?

Halo Infinite Carry On trailer highlights Become Master Chief promotional campaign

Image via Microsoft Microsoft is ramping up the promotions for Halo Infinite as the game gets closer to its full release on December 8. Two new live-action trailers were released called “Forever We Fight” and “Carry On.” See Cyber Monday Deals on Amazon “Forever We Fight” shows the bravery ...

View more: Halo Infinite Carry On trailer highlights Become Master Chief promotional campaign

What is Blox.Supply and is it a scam?

Blox.supply bots are overwhelming popular Roblox games with claims of free Robux, but the site mentioned is very likely just another scam.

View more: What is Blox.Supply and is it a scam?

The official launch trailer for Halo Infinite shows off more of the campaign, promises to be “the biggest Halo ever”

Screenshot via Microsoft Microsoft and studio 343 Industries have released the official launch trailer for Halo Infinite. The trailer will most likely be one of the last major promotional videos that Microsoft releases for Infinite before the game’s official release on Dec. 8 for the Xbox Series X/S and ...

View more: The official launch trailer for Halo Infinite shows off more of the campaign, promises to be “the biggest Halo ever”

Sony planning a new subscription service to take on Xbox Game Pass

Image via PlayStation Microsoft’s Xbox Game Pass has been a titan in the video game industry since its launch in 2017. For just $15 a month, players can play over 100 games, including new releases. It’s one of the most positively received subscription services in gaming, and Sony is ...

View more: Sony planning a new subscription service to take on Xbox Game Pass

All Winners at The Game Awards 2021

Rainbow Six Extraction Is Launching On the Xbox Game Pass

Roblox Free Items (January 2022) – Hair, Clothes, & More!

How to tame a Polar Bear in Minecraft (2022)

Minecraft Beach Seeds (1.17) – Bedrock & Java

How to get free Robux (January 2022) – No paying necessary!

Ukraine Says Russia Behind Cyberattack in 'Hybrid War' Move

Microsoft Warns Users of Fake Ransomware Spreading Data-Wiping Malware

How to Enable or Disable Microsoft Defender Tamper Protection in Windows 11?

Nickelodeon All-Star Brawl Countdown – Release for PC, Switch, PS, Xbox!

How long is the Halo Infinite Beta

God of War PC System Spec Requirements

OTHER TECH NEWS

;