none

GRAPHENE-BASED DESSICANT COULD REVOLUTIONISE MOISTURE CONTROL

01-06-2018
by 
in 

Scientists at UNSW have come up with yet another application for the “super material” graphene – this time using it as a dessicant that has the potential to revolutionise moisture control in applications from electronics to air conditioning.

The new super dessicant, made from graphene oxide, has been shown to be twice as absorbent as the industry standard, silica gel.

A team led by Dr Rakesh Joshi of the UNSW School of Materials Science and Engineering has developed the material, and a study outlining its performance in laboratory tests has been published in the journal Chemical Science.

“This is a stable new material that shows significant gains in adsorption capacity over conventional desiccants,” says Dr Joshi.

“One novel application we are investigating is the integration of the desiccant into inner soles of shoes to control odour and moisture. As the moisture could be released back into the atmosphere using an ordinary household device like a warm oven, shoes could be recharged regularly to keep them constantly fresh.”

The key to the material’s extraordinary adsorption and desorption rates lies in the high capillary pressure in the grapheme oxide laminates and tunnel-like wrinkles on their surfaces – processes which had not previously been understood.

Now, the ability to fine-tune the spaces between the layers of graphene oxide as desired will allow the development of customised dessicants to control moisture across multiple applications.

The new desiccant can also discharge moisture at low temperatures, enabling it to be used over and over again without expending excessive energy. By contrast, the heating required to regenerate conventional desiccants is often considered prohibitively expensive.

Related news & editorials

  1. 12.12.2018
    12.12.2018
    by      In
    There are very few companies in Australia that can point to half a century of experience in electronic control systems, but Plant Control & Automation is one that certainly can.
    The company was founded in Sydney in 1968 by Adrian Smith, a young engineer who immediately set about designing and... Read More
  2. 11.12.2018
    11.12.2018
    by      In
    A-Safe Australasia has capped off a record year with a move to new premises. And while the company’s new base at 177-179 Power Street, Glendenning in Sydney’s west is just a few hundred metres from its old home at 197 Power Street, it provides the company with more than double the office and... Read More
  3. 10.12.2018
    10.12.2018
    by      In
    Aurecon has named Louise Adams as Managing Director for Australia and New Zealand. She was formerly Regional Director responsible for the company’s South Australian and Victorian practice.
    Announcing the appointment, incoming Global Chief Executive Officer, William Cox, said: “Senior female... Read More
  4. 10.12.2018
    10.12.2018
    by      In
    Safety specialist Axelent is expanding its activities in Australia and New Zealand with the addition of Rob Quinn as Business Development Manager with a brief to focus on customer development and growth in the New South Wales and Queensland markets.
    “I am so pleased to welcome Rob Quinn to the... Read More