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  1. Article ; Online: The deposition of cadmium selenide and cadmium phosphide thin films from cadmium thioselenoimidodiphosphinate by AACVD and the formation of an aromatic species.

    Oyetunde, Temidayo / Afzaal, Mohammad / Vincent, Mark A / O'Brien, Paul

    Dalton transactions (Cambridge, England : 2003)

    2019  Volume 48, Issue 4, Page(s) 1436–1442

    Abstract: Aerosol-assisted chemical vapour deposition (AACVD) of Cd[(SPiPr2)(SePiPr2)N]2 yields hexagonal cadmium selenide and monoclinic cadmium phosphide films on glass substrates between 475 and 525 °C at different argon flow rates. The films were characterized ...

    Abstract Aerosol-assisted chemical vapour deposition (AACVD) of Cd[(SPiPr2)(SePiPr2)N]2 yields hexagonal cadmium selenide and monoclinic cadmium phosphide films on glass substrates between 475 and 525 °C at different argon flow rates. The films were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX) and X-ray photoelectron spectroscopy (XPS). All the results of XRD, EDAX and XPS are in agreement with our previous investigations on Cd[(SePiPr2)2N]2. A breakdown mechanism is proposed based on mass spectra and density functional theory calculations. A large peak at m/z 207 in the mass spectra, previously assigned by us as a new aromatic species, is also observed for this complex.
    Language English
    Publishing date 2019-01-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c8dt04357d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: High-Selectivity Hydrogen Gas Sensors based on Mesoporous PbO

    Fegade, Umesh / Alshahrani, Thamraa / Wu, Ren-Jang / Lin, Fan-Hsuan / Chang, Xu-Jia / Yuan, Shuo-Huang / Al-Ahmed, Amir / Khan, Firoz / Haq, Bashirul / Afzaal, Mohammad

    Chemistry, an Asian journal

    2023  , Page(s) e202300575

    Abstract: Hydrogen heralded as a promising renewable and environmentally friendly energy carrier, carries inherent risks owing to its highly flammable nature. A mere 4 % concentration of hydrogen in the air can trigger an explosion. To counteract this peril, a ... ...

    Abstract Hydrogen heralded as a promising renewable and environmentally friendly energy carrier, carries inherent risks owing to its highly flammable nature. A mere 4 % concentration of hydrogen in the air can trigger an explosion. To counteract this peril, a composite material comprising PbO
    Language English
    Publishing date 2023-09-11
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2233006-9
    ISSN 1861-471X ; 1861-4728
    ISSN (online) 1861-471X
    ISSN 1861-4728
    DOI 10.1002/asia.202300575
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Aerosol-assisted CVD of cadmium diselenoimidodiphosphinate and formation of a new

    Oyetunde, Temidayo / Afzaal, Mohammad / Vincent, Mark A / O'Brien, Paul

    Dalton transactions (Cambridge, England : 2003)

    2016  Volume 45, Issue 46, Page(s) 18603–18609

    Abstract: Aerosol-assisted chemical vapour deposition (AACVD) of Cd[( ... ...

    Abstract Aerosol-assisted chemical vapour deposition (AACVD) of Cd[(SeP
    Language English
    Publishing date 2016-11-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c6dt03186b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online: Recent Advances in Renewable Energy Research

    Al-Ahmed, Amir / Afzaal, Mohammad / Hossain, Mohammad Kamal

    Special Topic Volume with Invited Peer Reviewed Papers Only

    (Advanced Materials Research ; v.1116)

    2015  

    Abstract: The renewable energy sector has been the focus of worldwide effort to find sustainable and environmental friendly technologies for continuously increasing energy demands at low costs. Contributors of this book have extensive experience at various facets ... ...

    Series title Advanced Materials Research ; v.1116
    Abstract The renewable energy sector has been the focus of worldwide effort to find sustainable and environmental friendly technologies for continuously increasing energy demands at low costs. Contributors of this book have extensive experience at various facets of renewable energy including materials chemistry, polymer physics, device fabrication, and nanotechnology. The book has fourteen high quality articles covering general aspects of renewable energy, regional policies, thin film solar cells, solar thermal, hydrogen production, energy conversion and storage. This book is a result of collaborations
    Language English
    Size Online-Ressource (245 p)
    Publisher Trans Tech Publishers
    Publishing place Zurich
    Document type Book ; Online
    Note Description based upon print version of record
    ISBN 9783038355007 ; 3038355003
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  5. Article ; Online: Precursor chemistry for main group elements in semiconducting materials.

    Malik, Mohammad Azad / Afzaal, Mohammad / O'Brien, Paul

    Chemical reviews

    2010  Volume 110, Issue 7, Page(s) 4417–4446

    Language English
    Publishing date 2010-07-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/cr900406f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  6. Article: Solid state synthesis of tin-doped ZnO at room temperature: Characterization and its enhanced gas sensing and photocatalytic properties

    Jia, Xiaohua / Fan, Huiqing / Afzaal, Mohammad / Wu, Xiangyang / O’Brien, Paul

    Journal of hazardous materials. 2011 Oct. 15, v. 193

    2011  

    Abstract: A room temperature solid-state reaction has been used to prepare crystalline tin-doped ZnO. Zinc nitrate hexahydrate, cetyltrimethyl ammonium bromide, stannic chloride pentahydrate and sodium hydroxide with proper ratios were ground together. As- ... ...

    Abstract A room temperature solid-state reaction has been used to prepare crystalline tin-doped ZnO. Zinc nitrate hexahydrate, cetyltrimethyl ammonium bromide, stannic chloride pentahydrate and sodium hydroxide with proper ratios were ground together. As-synthesized samples were characterized by inductively coupled plasma analysis (ICP), scanning electron microscopy (SEM) and X-ray powder diffraction (XRD); The products were of different morphologies, well dispersed and exhibited good crystallinity, it is also found that the growth direction and morphology of ZnO depend on the amount of Sn doped, which is mainly caused by the difference in sizes between Zn and Sn atoms as well as the change of pH value. Moreover, gas sensing and photocatalytic properties of the obtained products were studied. The materials showed a high gas response to ethanol vapor, and the gas response can reach a maximum of Rₐ/Rg=124. In addition, tin-doped ZnO materials exhibited improved photocatalytic performance toward methyl orange (MO) solution under a current density of 0.03mgL⁻¹ comparison with undoped ZnO.
    Keywords X-ray diffraction ; crystal structure ; ethanol ; methyl orange ; nitrates ; pH ; scanning electron microscopy ; sodium hydroxide ; temperature ; tin ; vapors ; zinc ; zinc oxide
    Language English
    Dates of publication 2011-1015
    Size p. 194-199.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2011.07.049
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Solid state synthesis of tin-doped ZnO at room temperature: characterization and its enhanced gas sensing and photocatalytic properties.

    Jia, Xiaohua / Fan, Huiqing / Afzaal, Mohammad / Wu, Xiangyang / O'Brien, Paul

    Journal of hazardous materials

    2011  Volume 193, Page(s) 194–199

    Abstract: A room temperature solid-state reaction has been used to prepare crystalline tin-doped ZnO. Zinc nitrate hexahydrate, cetyltrimethyl ammonium bromide, stannic chloride pentahydrate and sodium hydroxide with proper ratios were ground together. As- ... ...

    Abstract A room temperature solid-state reaction has been used to prepare crystalline tin-doped ZnO. Zinc nitrate hexahydrate, cetyltrimethyl ammonium bromide, stannic chloride pentahydrate and sodium hydroxide with proper ratios were ground together. As-synthesized samples were characterized by inductively coupled plasma analysis (ICP), scanning electron microscopy (SEM) and X-ray powder diffraction (XRD); The products were of different morphologies, well dispersed and exhibited good crystallinity, it is also found that the growth direction and morphology of ZnO depend on the amount of Sn doped, which is mainly caused by the difference in sizes between Zn and Sn atoms as well as the change of pH value. Moreover, gas sensing and photocatalytic properties of the obtained products were studied. The materials showed a high gas response to ethanol vapor, and the gas response can reach a maximum of R(a)/R(g) = 124. In addition, tin-doped ZnO materials exhibited improved photocatalytic performance toward methyl orange (MO) solution under a current density of 0.03 mg L(-1) comparison with undoped ZnO.
    MeSH term(s) Catalysis ; Gases/analysis ; Photochemistry ; Temperature ; Tin/chemistry ; Zinc Oxide/chemistry
    Chemical Substances Gases ; Tin (7440-31-5) ; Zinc Oxide (SOI2LOH54Z)
    Language English
    Publishing date 2011-10-15
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2011.07.049
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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  8. Article ; Online: Cadmium sulfide and cadmium phosphide thin films from a single cadmium compound.

    Oyetunde, Dayo / Afzaal, Mohammad / Vincent, Mark A / Hillier, Ian H / O'Brien, Paul

    Inorganic chemistry

    2011  Volume 50, Issue 6, Page(s) 2052–2054

    Abstract: Aerosol-assisted chemical vapor deposition of Cd[(SP(i)Pr(2))(2)N](2) leads to the growth of cadmium sulfide and/or phosphide thin films on glass. Decomposition of the precursor has been studied by pyrolysis-gas chromatography/mass spectrometry and ... ...

    Abstract Aerosol-assisted chemical vapor deposition of Cd[(SP(i)Pr(2))(2)N](2) leads to the growth of cadmium sulfide and/or phosphide thin films on glass. Decomposition of the precursor has been studied by pyrolysis-gas chromatography/mass spectrometry and modeled by density functional theory.
    MeSH term(s) Cadmium Compounds/chemistry ; Glass/chemistry ; Membranes, Artificial ; Organometallic Compounds/chemistry ; Particle Size ; Phosphines/chemistry ; Quantum Theory ; Sulfides/chemistry ; Surface Properties
    Chemical Substances Cadmium Compounds ; Membranes, Artificial ; Organometallic Compounds ; Phosphines ; Sulfides ; cadmium sulfide (057EZR4Z7Q) ; cadmium phosphide (12014-28-7)
    Language English
    Publishing date 2011-03-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/ic102309r
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Low temperature CVD growth of PbS films on plastic substrates

    Akhtar, Javeed / Afzaal, Mohammad / Vincent, Mark A / Burton, Neil A / Hillier, Ian H / O'Brien, Paul

    Chemical communications. 2011 Feb. 1, v. 47, no. 7

    2011  

    Abstract: The low temperature growth of crystalline PbS films has been achieved on plastic substrates by CVD using a xanthate. The possible mechanism involved in this low temperature deposition has been probed by density functional theory calculations. ...

    Abstract The low temperature growth of crystalline PbS films has been achieved on plastic substrates by CVD using a xanthate. The possible mechanism involved in this low temperature deposition has been probed by density functional theory calculations.
    Keywords chemical communication ; chemical compounds ; chemical reactions ; density functional theory ; temperature
    Language English
    Dates of publication 2011-0201
    Size p. 1991-1993.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/c0cc05036a
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: The single molecular precursor approach to metal telluride thin films: imino-bis(diisopropylphosphine tellurides) as examples.

    Ritch, Jamie S / Chivers, Tristram / Afzaal, Mohammad / O'Brien, Paul

    Chemical Society reviews

    2007  Volume 36, Issue 10, Page(s) 1622–1631

    Abstract: Interest in metal telluride thin films as components in electronic devices has grown recently. This tutorial review describes the use of single-source precursors for the preparation of metal telluride materials by aerosol-assisted chemical vapour ... ...

    Abstract Interest in metal telluride thin films as components in electronic devices has grown recently. This tutorial review describes the use of single-source precursors for the preparation of metal telluride materials by aerosol-assisted chemical vapour deposition (AACVD) and acquaints the reader with the basic techniques of materials characterization. The challenges in the design and synthesis of suitable precursors are discussed, focusing on metal complexes of the recently-developed imino-bis(diisopropylphosphine telluride) ligand. The generation of thin films and nanoplates of CdTe, Sb(2)Te(3) and In(2)Te(3) from these precursors are used as illustrative examples.
    Language English
    Publishing date 2007-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472875-8
    ISSN 1460-4744 ; 0306-0012
    ISSN (online) 1460-4744
    ISSN 0306-0012
    DOI 10.1039/b605535b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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