ABSTRACT

The synthesized ZnO NPs using durian rind in solution has shown maximum absorption at 355.5 nm with the bandgap of 3.33 eV, spectrophotometrically. SEM and TEM studies revealed that the shape of the synthesized ZnO NPs was spherical with an average size of 280 and 283 nm, respectively. However, DLS analysis of ZnO NPs revealed the average particle size of 456 d.nm. The presence of [100], [002], [101], [102], [110], [103], [200], [112] and [201] planes in XRD corroborate the formation of pure wurtzite structure of ZnO NPs. Synthesized ZnO NPs showed remarkable photocatalytic activity on degradation of methylene blue and sulfanilamide, antioxidant activity, considerable antimicrobial activity against Escherichia coli and Staphylococcus aureus, and considerable cytotoxic activity against brine shrimp. The sulfanilamide degradation was found to be 96.70%, under natural sunlight and in the presence of 0.1% ZnO NPs at pH 10 with a time of 3 h. The dye degradation was found to be 84% under sunlight in the presence of 0.01% ZnO NPs at pH 10 with a time of 40 min. The synthesized ZnO NPs may be explored furthermore in the fields of wastewater treatment, biomedicine, biosensor, and nanotechnology.

摘要

分光光度法在溶液中使用榴莲皮合成的ZnO NPs在355.5 nm处显示最大吸收，带隙为3.33 eV。SEM和TEM研究表明，合成的ZnO NP的形状为球形，平均大小分别为280 nm和283 nm。然而，对ZnO NPs的DLS分析显示平均粒径为456d.nm。XRD中存在[100]，[002]，[101]，[102]，[110]，[103]，[200]，[112]和[201]平面证实了纯纤锌矿结构的ZnO形成NP。合成的ZnO NPs对亚甲基蓝和磺胺的降解具有显着的光催化活性，抗氧化活性，对大肠杆菌和金黄色葡萄球菌具有显着的抗菌活性。以及对盐水虾相当大的细胞毒活性。发现在自然阳光下，在0.1％ZnO NPs存在下，在pH 10的条件下，时间为3小时，磺酰胺的降解率为96.70％。发现在阳光下，在0.01％ZnO NPs，pH 10和40分钟的时间下，染料降解率为84％。可以在废水处理，生物医学，生物传感器和纳米技术领域进一步探索合成的ZnO NP。