سنتز نانوذره های NiO دوپه شده با Cu (II) با آسیاب گلوله سیاره‌ای و شناسایی آن
محورهای موضوعی : شیمی کاربردی
1 - دانشجوی کارشناسی ارشد شیمی، آزمایشگاه تحقیقاتی نانومواد، دانشکده شیمی، دانشگاه تبریز، تیریز، ایران.
2 - دانشیار نانوشیمی، آزمایشگاه تحقیقاتی نانومواد، دانشکده شیمی، دانشگاه تبریز، تبریز، ایران.
کلید واژه: نیکل اکسید, سونوفتوکاتالیست, آسیاب گلوله‌ای, فنل, مس (П) اکسید, دوپه کردن.,
چکیده مقاله :
در این پژوهش، ابتدا نانوذره های میان متخلخل نیکل هیدروکسید با روش حلال گرمایی سنتز؛ سپس، به عنوان ماده اولیه با حفظ ساختار و ریخت در یک عملیات گرمایی به نانوذره های نیکل اکسید تبدیل شدند. پس ازآن، به وسیله یک آسیاب گلوله ای با مس (П) دوپه شد. ازآن جایی که در طی فرایند سنتز از هیچ ماده شیمیایی سمی، گران قیمت و پیچیده استفاده نشد، نتیجه های این پژوهش می تواند از نظر علمی و صنعتی در تولید سایر نانومواد دوپه شده به کارگرفته شود. برای مطالعه های ساختاری و ترکیب شیمیایی نانومواد سنتزشده، روش‌های میکروسکوپی الکترونی روبشی (SEM)، پراش پرتو ایکس (XRD)، طیف سنجی تفکیک انرژی (EDS) و اندازه گیری مساحت سطح و تخلخل سنجی با روش جذب و واجذب نیتروژن (BET) به¬کارگرفته شد. الگو‌های XRD ساختار FCC نانوذره های سنتزشده و عدم وجود فاز ناخالصی را نشان دادند. همچنین، اندازه گیری‌های BET میان متخلخل بودن نانوذره ها، سطح ویژه و حجم منافذ مناسبی را نشان داد. همچنین، رفتار کاتالیستی نانوذره های نیکل اکسید دوپه شده با مس در حذف و تخریب سونوفتوکاتالیستی آلاینده فنل تحت نور مرئی و امواج فراصوت مطالعه شد. ماده فنل محلول در آب به عنوان آلاینده مدل پس از افزودن کاتالیست نیکل اکسید دوپه شده با مس، تحت نور مرئی و امواج فراصوت در مدت ۶0 دقیقه، حدود 5/86 درصد تخریب شد.
In this research, first mesoporous nickel hydroxide nanoparticles were synthesized by solvothermal method. Then the nickel hydroxide nanoparticles were converted into nickel oxide nanoparticles by maintaining the structure and morphology during heat treatment and then doped with copper (П) by ball milling method. Since no toxic, expensive, and complex chemicals were used during the synthesis process, the results of this research can be considered scientifically and industrially in the production of other doped nanomaterials. Methods such as scanning electron microscopy (SEM), X-ray diffraction (XRD), energy–dispersive spectroscopy (EDS), and surface area and porosity measurement by nitrogen absorption and desorption method (BET) were used to study the structure and chemical composition of the synthesized nanomaterials. XRD patterns showed FCC structure of the synthesized nanoparticles and the absence of impurity phase. Also, BET measurements showed the mesoporous nature of nanoparticles and good specific surface area and pore volume. The catalytic behavior of copper doped nickel oxide nanoparticles in the removal and sonophotocatalytic degradation of phenol pollutant under visible light and ultrasound waves was studied. It was observed that the phenol substance soluble in water as a model pollutant was destroyed by about 86.5% under visible light and ultrasonic waves after adding copper doped nickel oxide catalyst.
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