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New nanocomposite can help in cleaning air

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5 years ago

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New nanocomposite can help in cleaning air

~By Dinesh C Sharma

Carbon monoxide is a major air pollutant posing threat to human health. A team of scientists led by researchers at the Indian Institute of Technology (IIT) Gandhinagar have developed a nanocomposite material that can selectively convert environmental carbon monoxide into less toxic carbon dioxide.

The new composite material is made of graphene and alloy of platinum and palladium in the form of nanoparticles. Graphene was used as substrate and then ‘decorated’ with alloy nanoparticles of platinum and palladium. The novel catalytic structure was then used for selective oxidation of CO into CO2. The use of metal particle of certain orientation which absorb or interact with CO at lower energy helped the conversion.

“Once integrated, it is the size and shape of the nanoparticles that controls the catalytic efficiency of the hybrid material. The efficiency of any catalyst depends on availability of active sites and surface area of nanoparticles. Therefore, engineering the morphology of alloy nanoparticles and their integration with graphene is critical to achieve catalytic performance,” explained Dr Chandra Sekhar Tiwary, a member of the research team at IIT Gandhinagar, while speaking to India Science Wire.

The study was done by researchers from IIT Gandhinagar, in collaboration with scientists from IIT Kanpur and University of Campinas, Brazil. The research results have been published in journal Nanoscale of the Royal Society of Chemistry.

“While platinum and palladium on their own are active catalysts, alloying them with graphene does wonders. The hybrid has shown high adsorption and reaction due to synergism among the three,” said Prof. Sudhanshu Sharma, also from IIT Gandhinagar.

The catalytic behaviour of the nanocomposite was studied using different morphologies for the oxidation of CO. The conversion rate varied along with the flow rate of CO as well as temperature, showing full conversion at temperatures ranging from 75 to 125 degrees. “These are initial results which are exciting. We are trying to build 3D porous architecture using such hybrid for practical applications and at room temperature,” added Dr Tiwary.

The new material could potentially find use in chemical industries as well as environmental cleaning, researchers said.

However, experts sound a note of caution. “While the concept used is novel and important as CO is a major environmental problem. But it may take a while for this science to be converted into technology because the experimental set up appears complex and may not be commercially viable,” commented Dr Ramavatar Meena, a scientist at the Central Salt and Marine Chemicals Research Institute, Bhavnagar, who is not connected with the present study.

The research team included S. Sreehala, R. S. Kumar Mishra, Sudhanshu Sharma and C. S. Tiwary (all from IIT Gandhinagar); M. Manolata Devi, N. Dolai, Krishanu Biswas (from IIT Kanpur) and Y. M. Jaques, Douglas S. Galvao (from University of Campinas, Brazil). (India Science Wire)

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OnePlus to launch Nord CE 3 in India, specs and price leaked ahead of global debut

OnePlus may soon expand its affordable smartphone series Nord CE. It is being claimed that the company is going to launch the new OnePlus Nord CE 3 in July this year. As per the leaks, the OnePlus Nord CE 3 will be introduced as a successor to the OnePlus Nord CE 2.

Published

3 months ago

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March 3, 2023

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OnePlus smartphone

OnePlus may soon expand its affordable smartphone series Nord CE. It is being claimed that the company is going to launch the new OnePlus Nord CE 3 in July this year. As per the leaks, the OnePlus Nord CE 3 will be introduced as a successor to the OnePlus Nord CE 2. The information about the phone has also been revealed ahead of its official debut on many digital platforms. However, the company has not yet given any information regarding the same as yet.

According to a report by My Smart Price, the OnePlus Nord CE 3 is expected to launch in July alongside of OnePlus Nord 3. The tipster also has claimed about the specification of the phone as well. Scroll down to know more about the smartphone.

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According to tipster Steve Hemmerstoffer (@OnLeaks), the OnePlus CE 3 will come with a display with 120Hz refresh rate, under which the user will be able to have a high definition display quality while playing videos. The handset is also likely to feature a 6.72 inch Full HD Plus AMOLED display. Earlier it was being said that this phone will be introduced with an IPS LCD screen. However, the confirmation is still awaited.

Leaks also suggested that the OnePlus Nord CE 3 is expected to be powered by the octa-core Snapdragon 782G processor coupled with up to 12GB of RAM and up to 256GB of inbuilt storage. The upcoming OnePlus Nord CE 3 could be equipped with three rear cameras. The phone can get a 50-megapixel Sony IMX890 primary sensor, an 8-megapixel ultra-wide-angle lens, and a 2-megapixel macro lens. The phone is expected to get a 16-megapixel sensor for selfie and video calls.

The handset is said to have an in-display fingerprint sensor, a 5000mAh battery with 80W fast charging support, dual-band Wi-Fi, 5G, 4G LTE, Bluetooth and a USB Type-C port.

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Vivo launches color-changing back panel smartphone V27 Pro in India, check price and specs

The Chinese smartphone manufacturer Vivo has launched its awaited color-changing back panel smartphone V27 Pro in India, along with the lower variant V27. Interested customers can purchase the handset in magic blue and noble black color

Published

3 months ago

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March 1, 2023

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Vivo V27 Smartphone

The Chinese smartphone manufacturer Vivo has launched its awaited color-changing back panel smartphone V27 Pro in India, along with the lower variant V27. Interested customers can purchase the handset in magic blue and noble black color. Pre-booking of Vivo V27 Pro has started and sales will be from March 6. The sale of Vivo V27 will start from 23 March.

As per the official details, the handset is the upgraded version of the Vivo V25 series, which was launched last year. The company has introduced the Vivo V27 Series with Android 13-based Funtouch OS 13 and MediaTek processor, under which customers will be able to access heavy applications without and lag.

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Know everything about the Vivo’s Vivo V27 and V27 Pro

As per the photos shared by the company, Vivo V27 Pro and Vivo V27 come with a 3D curved screen with a refresh rate of 120Hz that offers users to have a high-definition screen experience while playing any video. It comes with a glass panel that changes color whenever some light or sun rays strike it. Both Vivo V27 Pro and Vivo V27 phones have three rear cameras, and features. The Vivo V27 Pro has a MediaTek Dimensity 8200 processor, while Vivo V27 has Dimensity 7200 5G processor. Both the chipset have been considered the advance chipset in the Indian market.

Price of Vivo’s V27 and V27 Pro

The price of 128 GB storage with 8 GB RAM of Vivo V27 Pro is Rs 37,999. At the same time, the price of 256 GB storage with 8 GB RAM has been kept at Rs 39,999. The 256 GB storage variant with the phone’s 12 GB RAM is priced at Rs 42,999. The price of 128 GB storage with 8 GB RAM of Vivo V27 has been priced at Rs 32,999 and 256 GB storage with 12 GB RAM has been priced at Rs 36,999.

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Samsung set to launch Galaxy S23 FE, design and specs leaked ahead of official launch

Published

3 months ago

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February 22, 2023

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The leading smartphone manufacturer Samsung recently launched the Galaxy S23 series in India, since then, the handsets became the talk of the time. Now the company is all set to attract more customers as it has decided to launch an affordable variant of Samsung Galaxy S23 FE in the country.

Ahead of the official launch, many information such as specs, design leaked on digital platforms, claiming the handset might come with the latest processor with a 120 Hz AMOLE display that will allow users to have a high-definition experience while playing videos or using the phone. As per the leaks, the phone could be equipped with a flagship chipset launched by Qualcomm last year. However, the South Korean tech giant hasn’t revealed anything regarding the same as of now. Not even the price and launch date.

Once launched, interested customers can purchase the smartphone from the company’s authorized store. If one wants it at an additional discount, they can purchase the phone from the e-commerce giant Amazon or Flipkart.

Know everything about Samsung Galaxy S21 FE

Tipster Connor (@OreXda) claims that the Samsung Galaxy S23 FE will be powered by the Snapdragon 8+ Gen 1 processor. It is the second most powerful chipset from Qualcomm after Snapdragon 8 Gen 2. A lot of flagship phones of this year shared the with same Snapdragon 8 Gen 1 such as OnePlus 11R, Xiaomi 12S Ultra, Asus Zenfone 9, Samsung Galaxy Z Flip 4, and Oppo Find N2 among others.

It said that the upcoming Samsung Galaxy S21 FE might replace the company’s feature-loaded smartphone Galaxy A74. It is expected that the company likely to launch the S21 FE at a similar price as A74.


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