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  1. Article ; Online: Highly efficient visible-light induced N-doped ZnO@g-C

    Borthakur, Sukanya / Das, Riya / Basyach, Purashri / Sonowal, Karanika / Saikia, Lakshi

    RSC advances

    2024  Volume 14, Issue 2, Page(s) 1156–1168

    Abstract: Facile, cost-effective and eco-friendly synthesis of N-doped ZnO@g- ... ...

    Abstract Facile, cost-effective and eco-friendly synthesis of N-doped ZnO@g-C
    Language English
    Publishing date 2024-01-03
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d3ra06488c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Multifunctional CdS Nanoparticle-Decorated CeO

    Kalita, Lisamoni / Sonowal, Karanika / Basyach, Purashri / Saha, Biswajit / Saikia, Lakshi

    ACS omega

    2023  Volume 8, Issue 13, Page(s) 11768–11781

    Abstract: Several one-dimensional and three-dimensional CdS@ ... ...

    Abstract Several one-dimensional and three-dimensional CdS@CeO
    Language English
    Publishing date 2023-03-23
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.2c05811
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Controlled Ni doping on a g-C

    Basyach, Purashri / Deb, Jyotirmoy / Sk, Saddam / Pal, Ujjwal / Gogoi, Madhulekha / Sastry, G Narahari / Saikia, Lakshi

    Physical chemistry chemical physics : PCCP

    2023  Volume 25, Issue 34, Page(s) 23033–23046

    Abstract: The development of a low-cost, environment-friendly and suitable semiconductor-based heterogeneous photocatalyst poses a great challenge towards extremely competent and substantial hydrogen evolution. A series of environment-friendly and proficient S- ... ...

    Abstract The development of a low-cost, environment-friendly and suitable semiconductor-based heterogeneous photocatalyst poses a great challenge towards extremely competent and substantial hydrogen evolution. A series of environment-friendly and proficient S-scheme Ni-doped CuWO
    Language English
    Publishing date 2023-08-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp03194b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Highly Luminescent Eu

    Sonowal, Karanika / Kalita, Sanmilan Jyoti / Purkayastha, Siddhartha K / Goswami, Juri / Basyach, Purashri / Das, Riya / Borborah, Abhishek / Guha, Ankur K / Saikia, Lakshi

    ACS omega

    2023  Volume 9, Issue 2, Page(s) 2504–2518

    Abstract: Considering the risk of toxic organic compounds to both human health and the environment, highly luminescent ... ...

    Abstract Considering the risk of toxic organic compounds to both human health and the environment, highly luminescent Eu
    Language English
    Publishing date 2023-12-31
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c07158
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Visible Light-Active Ternary Heterojunction Photocatalyst for Efficient CO₂ Reduction with Simultaneous Amine Oxidation and Sustainable H₂O₂ Production

    Basyach, Purashri / Prajapati, Pankaj Kumar / Rohman, Shahnaz S. / Sonowal, Karanika / Kalita, Lisamoni / Malik, Anil / Guha, Ankur K. / Jain, Suman L. / Saikia, Lakshi

    ACS Applied Materials & Interfaces. 2022 Dec. 29, v. 15, no. 1 p.914-931

    2022  

    Abstract: The present work described a unique approach for CO₂ reduction to methanol along with the oxidation of various amines to the corresponding imines and photocatalytic H₂O₂ production from H₂O and molecular O₂ using a heterojunction photocatalyst made up of ...

    Abstract The present work described a unique approach for CO₂ reduction to methanol along with the oxidation of various amines to the corresponding imines and photocatalytic H₂O₂ production from H₂O and molecular O₂ using a heterojunction photocatalyst made up of ZnIn₂S₄/Ni₁₂P₅/g-C₃N₄(NCZ) under visible light irradiation. The photocatalysts were synthesized via a high-temperature treatment of nickel and phosphorous precursors with g-C₃N₄ followed by decoration of ZnIn₂S₄. The synthesized photocatalysts were characterized using various spectroscopic and microscopic techniques. The density functional theory (DFT) studies suggested the participation of the valence band maximum (VBM) from Ni₁₂P₅ and the conduction band maximum (CBM) from ZnIn₂S₄ in the ternary NCZ heterojunction. The ternary composite exhibited superior photocatalytic activity compared to that of its individual components due to the formation of a heterojunction, thereby enhancing the transfer efficiency of electrons from the conduction band of g-C₃N₄ to that of ZnIn₂S₄ using Ni₁₂P₅ as an electron bridge. Moreover, the reduced band gap of the ternary heterojunction played a key role in its higher efficiency.
    Keywords carbon dioxide ; density functional theory ; imines ; irradiation ; light ; methanol ; nickel ; oxidation ; phosphorus ; photocatalysis ; photocatalysts ; spectroscopy ; ternary heterojunction ; CO2 reduction ; amine donors ; H2O2 production
    Language English
    Dates of publication 2022-1229
    Size p. 914-931.
    Publishing place American Chemical Society
    Document type Article ; Online
    ISSN 1944-8252
    DOI 10.1021/acsami.2c16549
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Glucose-Sensitive Delivery of Vitamin K by Using Surface-Functionalized, Dextran-Capped Mesoporous Silica Nanoparticles To Alleviate Hyperglycemia

    Sarkar, Sanjib / Sadhukhan, Pritam / Das, Dibyendu / Basyach, Purashri / Das, Joydeep / Das, Manash R. / Saikia, Lakshi / Wann, Sawlang Borsingh / Kalita, Jatin / Sil, Parames C. / Manna, Prasenjit

    ACS applied materials & interfaces. 2022 June 06, v. 14, no. 23

    2022  

    Abstract: Glucose-responsive delivery of antidiabetic molecules is gaining scientific attention as one of the promising strategies for maintaining normoglycemia and reducing the risk of overdose associated with the molecule. However, the water-insoluble ... ...

    Abstract Glucose-responsive delivery of antidiabetic molecules is gaining scientific attention as one of the promising strategies for maintaining normoglycemia and reducing the risk of overdose associated with the molecule. However, the water-insoluble antidiabetic molecules are not studied yet to deliver in a glucose-sensitive way. Herein, we examined the glucose-responsive delivery of vitamin K (VK) by using dextran-capped mesoporous silica nanoparticles (MSNs) functionalized with 3-carboxyphenylboronic acid (CPBA). The VK was loaded inside the pores of MSN-CPBA by physical adsorption, and the loading capacity of MSN-CPBA was 206.7 μg/mg (w/w). The pores of the nanoparticles were capped by using dextran via binding with CPBA, and the dextran-caps were untethered in the presence of glucose by competing with dextran to CPBA allowing the release of VK. The release of VK was 19.48 μg/mL in a cell-free system and 1.5 and 0.99 μg/mL in muscle and liver cells, respectively, in exposure to 25 mM glucose. The system not only delivered the VK in a glucose-dependent manner but also significantly improved the bioavailability thereof. The finding showed the promising therapeutic potential of MSN-CPBA-VK-Dex in reducing hyperglycemia in both in vitro and in vivo systems. The MSN-CPBA-based dextran-gated delivery system would be a promising therapeutic strategy to increase the bioavailability and stimuli-responsive delivery of antidiabetic molecules for managing diabetes mellitus over conventional approaches.
    Keywords adsorption ; bioavailability ; blood glucose ; cell free system ; dextran ; diabetes mellitus ; glucose ; hyperglycemia ; liver ; muscles ; overdose ; porous media ; silica ; vitamin K ; water solubility
    Language English
    Dates of publication 2022-0606
    Size p. 26489-26500.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1944-8252
    DOI 10.1021/acsami.2c05974
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Efficient hydroxylation of benzene to phenol by H₂O₂ using Ni-doped CuWO₄ on carbon nitride as a catalyst under solar irradiation and its structure–activity correlation

    Basyach, Purashri / Guha, Ankur Kanti / Borthakur, Sukanya / Kalita, Lisamoni / Chetia, Pubali / Sonowal, Karanika / Saikia, Lakshi

    Journal of materials chemistry A. 2020 June 30, v. 8, no. 25

    2020  

    Abstract: A series of environmentally benign and highly efficient Z-scheme Ni-doped CuWO₄ nanoparticles on graphitic carbon nitride (g-C₃N₄) were synthesized. The Ni-CuWO₄ nanoparticles were prepared via the substitution of Ni²⁺ on a wolframite CuWO₄ crystal. The ... ...

    Abstract A series of environmentally benign and highly efficient Z-scheme Ni-doped CuWO₄ nanoparticles on graphitic carbon nitride (g-C₃N₄) were synthesized. The Ni-CuWO₄ nanoparticles were prepared via the substitution of Ni²⁺ on a wolframite CuWO₄ crystal. The photocatalytic activity of these nanocomposites was investigated for the hydroxylation of benzene to phenol, considering the importance of phenol and carcinogenicity of benzene. An excellent benzene conversion of 98.5%, with 82.7% selectivity and 81.5% yield of phenol, was achieved over 0.2% Ni-CuWO₄/g-C₃N₄ in 15 minutes under sunlight using H₂O₂ as an oxidant in water, which is higher than those of pristine g-C₃N₄ and Ni-CuWO₄. The high yield of phenol is mainly attributed to the narrow band gap of the semiconductor and enhanced visible light absorption capacity over a specific range of wavelength by the introduction of g-C₃N₄, which minimized the rapid recombination of photogenerated holes and electrons. The computational study related to this work also implied the high optical property and stability of the photocatalyst.
    Keywords absorption ; benzene ; carbon nitride ; carcinogenicity ; electrons ; graphene ; hydrogen peroxide ; hydroxylation ; light ; nanocomposites ; nanoparticles ; nickel ; oxidants ; phenol ; photocatalysis ; photocatalysts ; semiconductors ; solar radiation ; wavelengths
    Language English
    Dates of publication 2020-0630
    Size p. 12774-12789.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2702232-8
    ISSN 2050-7496 ; 2050-7488
    ISSN (online) 2050-7496
    ISSN 2050-7488
    DOI 10.1039/d0ta03729j
    Database NAL-Catalogue (AGRICOLA)

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