گوپال متل
جناب گوپال متل اردو کے مشہور ادیب شاعر اور صحافی و مترجم تھے، ۴۷ء کے بعد مغربی پنجاب سے ترک وطن کرکے دلی میں آبسے تھے۔ یہیں سے ماہنامہ تحریک جاری کیا جو ۲۷ برس تک پابندی سے نکلتا رہا۔ ان کی تصانیف میں ’’لاہور کا جو ذکر کیا‘‘ اور ’’صحرا میں اذان‘‘ وغیرہ مقبول ہوئیں، متل صاحب نے اشتراکیت کی تردید میں درجنوں کتابوں کے ترجمے کیے اور دوسروں سے کرائے جن بدولت اردو کی تاریخ میں ان کا نام ثبت رہے گا۔ (ضیاء الدین اصلاحی۔ مئی ۱۹۹۳ء)
Western mind always remains muddled to fathom the Islamic belief “Prophethood” but it is grand reality that the West has contributed a lot in “Sirah Writing” from 17th to the present age. Although, in primary literature, Western scholars have delineated their abhorrence in this regard, without any research analysis. They usually used to twist the facts and misinterpret the text in attempt to sustain their assumption under their own perception. In the present age, literary change is seen in Western Writings that scholars have admired categorically the demonstrative Personality of Mohammad (PBUH) as well as they have praised his attributes as authoritative leader, Reformer, Peace maker etc. It will discuss the changes which were seen in Western writings about Sirah and analysis the causes and facts accordingly. It will also throw light on the Western assumption about Prophet Muhammad (PBUH); which has been prevailed in their writings before 19th even changed now. Islam is religion of Peace and Prophet of Islam has sent as” Blessing for All the Universe” from God Almighty so the question is what are the motives to bring forward theses western suppositions in this regard and at what extent it will affect? It will be discussed through comparative analysis among the Sirah books by Western Scholars Maxim Rodinson, Karen Armstrong and Michael Cook.
The main focus of the present research is the development of efficient catalysts for the degradation of wide range of pollutants present in different environmental compartments. For this purpose, two sets of compounds are synthesized. One class is designated as quantum dots and the second is sulphide based nanoparticles on the basis of particle size. The potential of these materials as candidates for environmental remediation is evaluated through degradation studies of dyes, polyaromatic hydrocarbons and pesticides. Quantum dots were synthesized to act as core (indium phosphide), shell (zinc sulphide) and (silver & copper) doped following the thermal decomposition process. Another series of compounds based on zinc and silver sulphide was attempted. The structure property relationship was assessed through a wide range of techniques including UV-Visible spectroscopy (UV-Vis), Photoluminescence spectrofluorometry (PL), X-ray Diffraction (XRD), Energy dispersive X-ray spectroscopy (EDX), Transmission electron microscopy (TEM) and Thermogravimetry (TGA). The particle size results obtained from TEM supported two ranges; 2.28-4.60 nm and 612 nm for quantum dots and sulphide based nanoparticles, respectively. Each material was spherical in shape with clear lattice fringes. The purity of the product was witnessed by the presence of main elements and doping was in proportion to concentration induced. XRD results of ZnS depicted lattice planes (111), (200), (220), (311), (400), and (331) in good agreement with cubic geometry. It was also found that doping stamped good thermal stability to the synthesized material. Each of the synthesized material was tested as potential photocatalyst candidate for the degradation of representative dyes (crystal violet, Congo red), polyaromatic hydrocarbons (phenanthrene, naphthalene and pyrene) and pesticide (deltamethrin). For this purpose, series of bench scale batch experiments were designed and photocatalytic activity under UV light irradiation was followed on UV-Visible, Gas chromatography coupled with Mass spectrometry, and High performance liquid chromatography.The degradation potential of QDs due to smaller particle size was higher than nanoparticles with optimum efficiency of 95% and 81%, respectively, for both cationic and anionic dyes. The results indicated that degradation of PAHs increased with increase in irradiation time as evident from the reduced intensity of molecular ion peaks at standard retention times.The fragment at m/z 149 represented formation of phthalic acid that is less hazardous than parent compound. The study concludes that each synthesized material can be employed as potential photocatalyst for the degradation of representative pollutants. It is recommended that environmental compartment with mix pollutants can conveniently be treated with a single material to an appreciable extent. The study offers economical and environment friendly remediation model.