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    COLLOIDAL SUSPENSION OF GOLD NANOPARTICLES
    2.
    发明申请
    COLLOIDAL SUSPENSION OF GOLD NANOPARTICLES 审中-公开

    公开(公告)号：US20190127632A1

    公开(公告)日：2019-05-02

    申请号：US16222687

    申请日：2018-12-17

    Applicant: King Fahd University of Petroleum and Minerals

    Inventor： Md. Abdul Aziz ,  Mohammed Nasiruzzaman Shaikh ,  Zain Hassan Yamani

    IPC: C09K11/02 ,  C09K11/58

    Abstract: Monodisperse carboxylate functionalized gold nanoparticles comprising a capping agent layer of pamoic acid and colloidal suspensions thereof are disclosed. These gold nanoparticles have an average particle size of greater than 15 nm or less than 8 nm and demonstrate significant fluorescent properties. In addition, a method for the size controlled preparation of these monodisperse carboxylate functionalized gold nanoparticles wherein pamoic acid acts as both a reducing and capping agent and wherein the size of the particles can be controlled by the pH of the process is disclosed. In addition, a method for the size controlled preparation of these monodisperse carboxylate functionalized gold nanoparticles utilizing seed mediated growth is disclosed.

    PENCIL GRAPHITE ELECTRODE MODIFIED WITH POROUS COPPER FOR NITROPHENOL ELECTROCHEMICAL DETECTION
    6.
    发明申请
    PENCIL GRAPHITE ELECTRODE MODIFIED WITH POROUS COPPER FOR NITROPHENOL ELECTROCHEMICAL DETECTION 审中-公开
    用于硝基酚电化学检测的多孔铜修饰石墨电极

    公开(公告)号：US20150285756A1

    公开(公告)日：2015-10-08

    申请号：US14243762

    申请日：2014-04-02

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    Inventor： Abdel-Nasser Metwally Aly Kawde ,  Md. Abdul Aziz

    IPC: G01N27/30 ,  C25D3/38

    CPC classification number: C25D3/38 ,  C25D5/54 ,  G01N27/308 ,  G01N33/48714

    Abstract: The pencil graphite electrode modified with porous copper may be used for the detection of 4-nitrophenol (4-NP). The pencil graphite electrode has an outer surface coated with a layer of porous copper. Prior to modification of the pencil graphite electrode, a solution of approximately 0.3 M CuSO4 in an approximately 0.1 M acetate buffer solution (pH 4.8) is prepared. A bare pencil graphite electrode (PGE), extracted from a graphite pencil, is then immersed in this solution. An electrical potential of approximately −1.2 V is applied for approximately 60 seconds for electrodeposition of copper on the surface of the PGE to form a porous copper layer thereon. The pencil graphite electrode coated with porous copper is then removed from the mixture, washed and dried, and is then ready to be used for the electrochemical detection and quantification of 4-NP.

    Abstract translation: 用多孔铜改性的铅笔石墨电极可用于检测4-硝基苯酚（4-NP）。 铅笔石墨电极具有涂覆有多孔铜层的外表面。 在改进铅笔石墨电极之前，制备约0.1M CuSO 4在约0.1M乙酸盐缓冲溶液（pH4.8）中的溶液。 然后将从石墨笔提取的裸铅笔石墨电极（PGE）浸入该溶液中。 施加大约-1.2V的电位约60秒，以在PGE的表面上电沉积铜以在其上形成多孔铜层。 然后将涂有多孔铜的铅笔石墨电极从混合物中取出，洗涤和干燥，然后准备用于4-NP的电化学检测和定量。

    Porous carboxylated jute stick activated carbon
    9.
    发明授权
    Porous carboxylated jute stick activated carbon 有权

    公开(公告)号：US11345602B2

    公开(公告)日：2022-05-31

    申请号：US16525949

    申请日：2019-07-30

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    Inventor： Md. Abdul Aziz ,  Shakhawat Hossain Chowdhury ,  Mohammad Abu Jafar Mazumder ,  Md Imran Rahman Chowdhury

    IPC: C01B31/12 ,  C01B32/324 ,  C01B32/342

    Abstract: Jute stick/stalk can be used to prepared and carboxylated to yield useful activated carbons, e.g., for removing Pb2+ from drinking water. Such activated carbons can act as an inexpensive adsorbents using agricultural waste or by-products. Carboxylation of jute stick activated carbon (JSAC) can improve its efficiency for Pb2+ removal, e.g., from aqueous solutions, even if its BET surface area is reduced. Carboxylated JSAC (JSAC-COO−) can have surface areas around 615.3±0.5, 1, 2.5, 5, 10, 15, 20, or 25 m2/g. JSAC-COO− can treat varied Pb2+ concentrations, 10, 25 mg/L, etc., pHs, e.g., 4.0, 7.0, etc., temperatures, e.g., 15° C., 27° C., etc., and contact periods, e.g., 1, 5, 10, 15, 30, 60 minutes, etc., achieving up to 99.8% Pb2+ removal within 15 minutes of contact JSAC-COO− adsorption capacity can be >25.0 mg Pb2+/g, as well as other metal ions, with potential for water and/or gas treatment.

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