I earned my Ph.D. (Dr. rer. nat.) Degree in Solid State Chemistry with distinction (Magna cum laude) from the Max Planck Institute (MPI-FKF) for Solid State Research, Stuttgart, Germany, in March 2011. Soon after, I was awarded a postdoctoral fellowship from MPI, allowing me to extend my stay there till November 2012. After productive research stay of approximately ~7 years in Prof. Martin Jansen’s Lab. at Max Planck Institute for solid state research (MPI-FKF) Stuttgart Germany, in December 2012, I joined as "Principal Scientist" the National Centre for Physics (NCP), Quaid-I-Azam University, Islamabad, Pakistan - my alma-matter from where I earned my M.Sc. (1999-2001) and M.Phil. (2001-2003) degrees in Inorganic / Analytical Chemistry.My research journey also led me to BAM Adlershof Berlin as a DAAD-Research Fellow in 2021 and a Humboldt University Berlin SALSA Postdoctoral fellow from 2017 to 2018 t work jointly with Dr. Franziska Emmerling at BAM-Berlin, Germany. In 2023 .
0 Students Assisted:-I've supervised 06 Ph.D. students , 21 M.Phil. students, 70 Graduate BS-students in various categories at Material Science lab of Coe-Physics of NCP. For complete list please click: https://drive.google.com/file/d/1QbdPjfjlEz4h8XFsVkN4Bhst1WYxCuuf/view?usp=sharing
Holding a Ph.D. with distinction in Solid State Chemistry from renowned Max Planck Institute Stuttgart, Germany with over 13 years of post-Ph.D. experience, I am a systematic researcher, adept at managing, monitoring, and executing successful experiments. My global experience as a solid-state experimental scientist positions me ideally for the Group Leaders role. I will bring in-depth knowledge and vast experience marked by strategic thinking, conceptual problem-solving, and adept project management principles application. My oral and written communication both in English and German language prowess is evident in highly persuasive writing styles for impactful publications and showcased during global talks as well as collaborative research initiatives with institutions such as Max Planck Institute Stuttgart, ACNS (Bragg Institute) Australia, BAM Adlershof Berlin, Brigham Young University UTAH, USA and reputed synchrotron light sources worldwide. Download RESUME
Specialization: Inorganic Solid State Chemistry / Material Science
Subjects: Inorganic/Analytical Chemistry
Subjects: Pre-Medical
Subjects: Inorganic/Analytical Chemistry
Subjects: Chemistry
Subjects: Science
The main focus of the research work accomplished was to prepare new ternary alkali-oxometallates of the first-row (3d) transition-metal elements containing, providing highly defined materials showing interesting structural and physical properties. ‘Azide nitrate Route’ was employed successfully for the complete synthesis, and overall 11 modifications of alkali oxometallates were characterized alongwith in depth study of their structural property relationships. Out of these, nine compounds were unknown. For all the compounds the crystal structure has been determined from single crystal data (07) and rest from powder data using state of the art techniques (High resolution synchrotron, neutron and advance D8-Bruker diffractometers). The "azide/nitrate route" has proven to be an efficient approach in present work for the solid state synthesis of new magnetic oxides covering the whole dimensionality, starting from 3-dimensional oxoferrates, two dimensional oxochromate and oxocobaltate respectively, and also new intrinsically doped one dimensional cuprates. We observed and illustrated, how by changing the dimensionality of a magnetic lattice, influence dramatically the thermodynamic properties by concerted study of the specific heat and magnetic susceptibility behaviour of the magnetic system particularly at low temperature. Later in order to construct a model for the spin interactions in these alkali oxometallates, the intrinsic magnetic properties of total 10 compounds have also been measured. The resulting magnetic properties were later justifiably analysed by employing various theoretical models. Thermal analysis (DSC, low and high temperature specific heat) bulk and electrical conductivity measurements, Moessbauer spectroscopy, High-resolution synchrotron powder diffractometry, neutron diffraction experiments were performed to study the structure property relation in detail and to validate the authenticity of results received.
The speciation of chromium was done in thirty two soil samples procured from areas in close vicinity of tanneries in Punjab as well as from suburbs of Rawalpindi and Islamabad,Pakistan, the latter being considered as typical background samples, while the former as typical Cr-contaminated samples. Total chromium in the samples was estimated by the atomic absorption method using the HCl-based wet digestion procedure and the Cr(VI) by the DPC(1,5-diphenyl carbohydrazide) complexation based spectrometric method, employing 540.0 nm ?max line, the difference between the two levels yielded the trivalent chromium content of given sample.
The relationship between chromium speciation and relevant physical parameters of the soils, such as moisture and water related pH(pHw) were also studied. The moisture content in the soil samples varied between 0.81% (w/w) and 13.50% in soil samples taken from Samrial, Sialkot and G-6/1-4, Islamabad, respectively. The pHw values also showed quite divergent levels with the minimum at 7.28 in the soil sample from Lahore. For background soil samples, however, the pHw values showed consistently close values falling from 8.11 to 8.95. The results of the study showed no correlation between pHw and the moisture content. The estimated levels of total chromium ranged from a minimum of 32.18 mg/kg to a maximum of 310.12 mg/kg in soil samples taken from Niaz Nagar, Kasur and Samrial, Sialkot respectively, showing and almost ten-fold enhanced level of the metal in the tannery affected area. The local soil samples from Rawalpindi and Islamabad were found to contain the barest minimum Cr(VI) levels running from about 27.24 to 46.00 mg/kg.
The study showed that in case of soil samples from close to the work place the Cr(VI) levels are substantially higher reaching to a peak value of about 230 mg/kg. On the whole, the hexavalent chromium content of these soils remained three-fold to seven-fold in case of effluent contaminated soil. For the background soil the Cr(VI) to Cr(III) ratio was found to be between 1-2, but in contrast this ratio went high by four-fold in case of the contaminated soils. The study thus evidenced enhanced levels of Cr(VI) in local tannery effluent contaminated soils, a situation that requires strict effluent quality control and implementation.
Two selected essential metals (Fe & Zn), four non-essential metals (Ni, Cr, Cd, & Pb), and four macro-nutrients (Na. K. Mg, & Ca) were determined in edible liver samples of various animals by using FAAS, wet digestion technique, based on the use of HNO3-HCLO4 methods. Optimum operating analytical conditions were established for each metal separately on a Schimadzu AAS system, model 607-A. the edible liver samples pertaining to lamb, calf, chicken, goat and buffalo, employed for metal analysis were obtained from local, meat vendors in Islamabad and Rawalpindi. The results are reported as X+SD, on wet weight basis. The accuracy determined experimentally ranged between +1.0----+1.5% for the triplicate runs of sub-samples. In case of essential metals, the concentration of Zn was found to range from 2.99 mg/kg to 5.53 mg/kg in buffalo and lamb liver samples respectively, while the concentration range of Fe was from 121.0mg/kg to 398.1mg/kg in chicken and calf liver samples respectively. In case of non-essential metals the concentration of Ni ranged between 0.40----39.30mg/kg in buffalo and lamb liver sample. The concentration of Cr was found table between 04.64----13.14mg/kg in goat and lamb liver, while that of Cd between 0.03----0.19mg/kg in lamb and buffalo liver samples respectively. Similarly, Pb levels ranged between 0.19----1.95mg/kg in lamb and goat liver samples.
In case of macronutrients, the Na levels were found to be between 728.1 and 1327.7mg/kg in goat and buffalo liver samples; K between 15.01----33.37mg/kg in the chicken and goat liver samples; Ca between 261.4----435.0mg/kg in goat and chicken liver samples respectively. From the viewpoint of enhanced levels of non-essentials metals in the liver of various animals, the present study brings forth a serious caution against the use of liver as regular food item, since the toxic metal levels are well above the stipulated safe limit of 1mg/kg laid down by W.H.O. The daily dietary allowance (DDA) must be accordingly fixed for the ingestion of these metals through liver.
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Contact: R.Dinnebier@fkf.mpg.de Click here
for reference letter.Contact: 92 51 9219811, 92 51 2829167, Fax: 92 51 2873869
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Contact: m.jansen@fkf.mpg.de Click here
for reference letter.Contact: Franziska.Emmerling@bam.de, Tel: +49-30-8104-1133
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Contact: rekre@fkf.mpg.de
Contact: Prof. Andrew Fitch
fitch@esrf.fr
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Principal Scientist, National Centre for Physics, Quaid-i-Azam University Campus, 44000, Islamabad, Pakistan
+92 51 9006 223