以松果提取物为原料,采用绿色合成法合成NiO纳米颗粒,这是一个简单的,成本效益高,环保和可持续的方法。通过X衍射微分和透射电子显微镜分析确定NiO纳米颗粒的粒径在10-25nm范围内,NiO纳米粒子的带隙能量为2.66eV。研究了NiO纳米颗粒在微波辅助硼氢化钠水解和亚甲基蓝光催化还原中的催化效果,并确定它们在两种应用中都具有很高的催化效果。确定硼氢化钠水解中的氢气产生速率为1135mL/g/min。对于n阶和LangmuirHinshelwood动力学模型,硼氢化钠水解的活化能为29.69kJ/mol和29.59kJ/mol,分别。在用NaBH4光催化还原亚甲基蓝中,确定在不存在催化剂的情况下不会发生还原,但是在催化剂的存在下,在3分钟内减少了98%。确定NiO纳米粒子在亚甲基蓝的光催化还原中使用了五次,第五次还原效率为93%。确定亚甲基蓝的光催化还原为伪一级,速率常数为1.63s-1。确定了通过环境友好的绿色合成方法合成的NiO纳米颗粒可以用作两种不同应用的催化剂。
从松果提取物中合成了NiO纳米颗粒,成本效益高,绿色方法。使用各种表征技术表征合成的NiO纳米颗粒。NiO纳米粒子在亚甲基蓝的光催化还原和硼氢化钠的水解中都具有很高的活性,它们是在两种不同应用中具有高活性的催化剂。在NiO纳米颗粒催化剂存在下,未催化的NaBH4对亚甲基蓝的光催化还原未实现,并且在3分钟内完成。确定硼氢化钠水解中的氢气产生速率为1135mL/g/min。NiO纳米颗粒催化剂对硼氢化钠水解具有低活化能。
NiO nanoparticles were synthesized from pine cone extract by green synthesis method, which is a simple, cost-effective, environmentally friendly and sustainable method. The particle size of NiO nanoparticles was determined to be in the range of 10-25 nm by X-diffraction differential and transmission electron microscope analysis, and the bandgap energy of NiO nanoparticles was determined to be 2.66 eV. The catalytic effect of NiO nanoparticles in both microwave-assisted sodium borohydride hydrolysis and photocatalytic reduction of methylene blue was examined and it was determined that they had a high catalytic effect in both applications. It was determined that the hydrogen production rate in sodium borohydride hydrolysis was 1135 mL/g/min. The activation energy of sodium borohydride hydrolysis is 29.69 kJ/mol and 29.59 kJ/mol for the nth-order and Langmuir Hinshelwood kinetic models, respectively. In the photocatalytic reduction of methylene blue with NaBH4, it was determined that the reduction did not occur in the absence of a catalyst, but in the presence of the catalyst, the reduction occurred 98% in 3 min. It was determined that NiO nanoparticles were used five times in the photocatalytic reduction of methylene blue and the reduction efficiency for the fifth time was 93%. It was determined that the photocatalytic reduction of methylene blue was pseudo-first order and the rate constant was 1.63 s-1. It was determined that NiO nanoparticles synthesized by the environmentally friendly green synthesis method can be used as catalysts for two different applications.
NiO nanoparticles were synthesized from pinecone extract in a simple, cost-effective, and green method. The synthesized NiO nanoparticles were characterized using various characterization techniques. NiO nanoparticles have high activity both in the photocatalytic reduction of methylene blue and in the hydrolysis of sodium borohydride, and they are catalysts with high activity in two different applications. Photocatalytic reduction of methylene blue with uncatalyzed NaBH4 was not achieved and was completed in 3 min in the presence of NiO nanoparticle catalyst. It was determined that the hydrogen production rate in sodium borohydride hydrolysis was 1135 mL/g/min. NiO nanoparticle catalysts have low activation energy for sodium borohydride hydrolysis.