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Converting temperature fluctuations into clean energy with novel nanoparticles and heating strategy

17-Jan-2023

Pyroelectriccatalysis (pyro-catalysis) can convert environmental temperature fluctuations into clean chemical energy, like hydrogen. However, compared with the more common catalysis strategy, such as photocatalysis, pyro-catalysis is inefficient due to slow temperature changes in the ambient ...

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Catalyzing ‘net-zero’ green hydrogen from the sun

Chemists discover a fundamental catalyst protonation process to promote solar-driven water-splitting for hydrogen production without CO2 emissions

29-Dec-2022

Hydrogen is a promising green energy carrier for a sustainable future. However, it is mostly locked in water. Energy is required to liberate it from water for practical use. Solar energy is abundantly renewable, ideal for direct water-splitting to generate hydrogen using a ‘photocatalyst’. ...

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Chemists boost eco-friendly battery performance using catalysts with unconventional phase nanostructures

“This study reveals the great potential of phase engineering of catalysts in metal-gas electrochemistry”

17-Oct-2022

The metal-carbon dioxide battery is a promising and environmentally friendly technology, but its energy efficiency is limited. Recently, a research team co-led by chemists from City University of Hong Kong (CityU) discovered an innovative way to overcome this problem by introducing an ...

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Nanoplastics can disrupt human liver, lung cells’ processes in lab experiments

What happens when people unknowingly eat, drink or inhale nearly invisible pieces of plastic?

20-Sep-2022

Although it’s unclear what impact this really has on humans, researchers have now taken a step toward answering that question. In ACS’ Environmental Science & Technology, a team reports laboratory results indicating that tiny plastic particles could enter liver and lung cells and disrupt their ...

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Rising star in the energy world

Developing high-performance MXene electrodes for next-generation powerful battery

23-Nov-2021

Two-dimensional MXene has been a rising star in the energy world as theycan store energy fast. But their unstable voltage output limits their applications. A collaborative research team led by scientists from City University of Hong Kong (CityU) has recently developed battery-like ...

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Innovative design of titanium alloy with supreme properties by 3D printing

New pathway to design alloys with unprecedented structures and properties for various structural applications

27-Oct-2021

A research led by scientists from City University of Hong Kong (CityU) has successfully developed a super-strong, highly ductile and super-light titanium-based alloy using additive manufacturing, commonly known as 3D printing. Their findings open up a new pathway to design alloys with ...

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Wet-chemical synthesis of two-dimensional metal electrocatalysts

07-Sep-2021

With the increasingly serious global energy crisis caused by the excessive consumption of fossil fuels, developing clean, efficient, and sustainable energy conversion technologies is highly desirable. Electrocatalysis is one of the most promising methods to produce clean energy. However, the wide ...

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Novel photocatalyst effectively turns carbon dioxide into methane fuel with light

Nature-inspired photocatalysis

04-Feb-2021

Carbon dioxide (CO2) is one of the major greenhouse gases causing global warming. If carbon dioxide could be converted into energy, it would be killing two birds with one stone in addressing the environmental issues. A joint research team led by City University of Hong Kong (CityU) has developed ...

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Anions Matter

Zinc-ion hybrid capacitors with ideal anions in the electrolyte show extra-long performance

18-Nov-2020

Metal-ion hybrid capacitors combine the properties of capacitors and batteries. One electrode uses the capacitive mechanism, the other the battery-type redox processes. Scientists have now scrutinized the role of anions in the electrolyte. The results, which have been published in the journal ...

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A novel method to monitor molecular aggregation

16-Jan-2019

Chiral molecules are defined as molecules that are non-superimposable on their mirror image, much like that of left and right human hand bone structure. There are many examples of chiral molecules in nature, including proteins and deoxyribonucleic acid (DNA). The dynamic processes of these chiral ...

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