Robust ternary system of corncob-derived carbon quantum dots/ ZnFe2O4/graphene oxide for wastewater treatment

IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Wajeeha Qayyum, Noor Tahir, Muhammad Zahid, Saima Noreen, Muhammad Yaseen, Abeer A. AlObaid, Qamar Abbas, Ghulam Mustafa
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引用次数: 0

Abstract

Water contamination emerging from urban and industrial waste disposal is posing an alarming threat to human and marine life. Hence, it is imperative to take a crucial approach to lowering the overall cost and time of wastewater treatment. The efficiency of heterogeneous photo Fenton green wastewater treatment processes relies mainly on the morphology and surface interface properties of photocatalysts for harnessing maximum sunlight energy. This research work reports for the first time the hydrothermal synthesis of ternary zinc ferrite coupled with carbon quantum dots derived primarily from corncob biomass and supported over graphene oxide. The physiochemical properties and microstructure of magnetic graphene oxide anchored over carbon quantum dots included Fourier Transform Infrared Spectroscopy, Scanning Electron Microscope/Energy Dispersive X-ray, X-ray photoelectron spectroscopy, X-ray diffraction and Ultraviolet–Visible Spectroscopy. The effect of several factors on the photocatalytic degradation of Rhodamine B (RhB) dye was studied and maximum degradation was attained at optimized conditions of pH = 4, catalyst concentration (20 mg/100 mL), oxidant dose (10 mM) and degradation time (60 min). Response surface methodology was used to determine the optimization of various interacting parameters. The current research focused on the utilization of waste corncob biomass as a potential candidate for the novel ternary nanocomposite for effective treatment dye wastewater and reuse of treated dye water over wheat seeds germination.

玉米芯衍生的碳量子点/ ZnFe2O4/氧化石墨烯三元体系用于废水处理
城市和工业废物处理产生的水污染对人类和海洋生物构成了令人震惊的威胁。因此,必须采取一种关键的方法来降低废水处理的总体成本和时间。非均相光芬顿绿色废水处理工艺的效率主要取决于光催化剂的形态和表面界面特性,以最大限度地利用太阳光能量。本研究首次报道了水热合成的三元铁氧体锌与碳量子点的偶联,这些碳量子点主要来源于玉米芯生物质,并在氧化石墨烯上负载。磁性氧化石墨烯锚定在碳量子点上的物理化学性质和微观结构包括傅里叶变换红外光谱、扫描电镜/能量色散x射线、x射线光电子能谱、x射线衍射和紫外可见光谱。研究了几种因素对罗丹明B (Rhodamine B, RhB)染料光催化降解的影响,在pH = 4、催化剂浓度(20 mg/100 mL)、氧化剂剂量(10 mM)、降解时间(60 min)的优化条件下,达到最大降解效果。采用响应面法确定各相互作用参数的优化。目前的研究重点是利用废弃玉米芯生物质作为新型三元纳米复合材料的潜在候选材料,用于有效处理染料废水和处理后的染料水在小麦种子萌发过程中的再利用。
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来源期刊
BMC Chemistry
BMC Chemistry Chemistry-General Chemistry
CiteScore
5.30
自引率
2.20%
发文量
92
审稿时长
27 weeks
期刊介绍: BMC Chemistry, formerly known as Chemistry Central Journal, is now part of the BMC series journals family. Chemistry Central Journal has served the chemistry community as a trusted open access resource for more than 10 years – and we are delighted to announce the next step on its journey. In January 2019 the journal has been renamed BMC Chemistry and now strengthens the BMC series footprint in the physical sciences by publishing quality articles and by pushing the boundaries of open chemistry.
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