Optimization of graphene oxide and Au Nanorod composite and application of GO/AuNR modified electrode for uric acid detection.

No abstract

Humic acid is a heterogeneous organic compound that is carcinogenic in peat water and is very difficult to degrade biologically. Water is a source of life, therefore the need for clean water is increasing. This study aims to carry out the degradation of humic acid using the photocatalytic method. Photocatalysis is the degradation of humic acid using light in the presence of a photocatalyst in the reaction process. The photocatalyst used in this study was 7% Cu doped ZnO. The Cu doped ZnO used with a band gap of 2.57 eV and a particle size of 27 nm. In this study, the humic acid degradation process used a hexagonal photo reactor with various stirring speeds of 500, 1000, 1500 rpm and without stirring. The degradation process is carried out using outdoor light (direct sun). The light intensity can be measured using lightmeters on the front and rear of the reactor. The degradation process uses variations in irradiation time of 1, 2, 3, 4 and 5 hours. The degradation results were measured using a UV-Vis spectrophotometer to see the absorbance before and before degradation. The results of this study obtained the highest percentage degradation at the speed of each stirring of 500 rpm of 90.09% at 5 hours of irradiation, 1000 rpm of 97.37% at 5 hours of irradiation, 1500 rpm of 97.79% at 5 hours of irradiation. hours and without stirring of 71.71% at 5 hours of irradiation. The maximum degradation concentration in this study was obtained at a stirring speed of 1500 rpm and an irradiation time of 5 hours. The speed and irradiation time have an influence on the degradation results obtained.

Fever is a condition when the body temperature increases to more than 380C. Fever indicates the presence of a disease or other condition in the body. Fever generally occurs as a reaction of the immune system to fight viral, bacterial, fungal, or parasitic infections that cause disease. Some of the diseases that often cause fever are flu, sore throat, and urinary tract infections. Fever can happen to anyone, starting frombaby, children, to adults. This disease can be cured by using drugs that contain antipyretics, analgesics and anti-inflammatory. Jatropha leaves contain active compounds in the form of flavonoids which contain antipyretics, analgesics, and anti-inflammatory properties. Here will be explained about the content of jatropha leaves which can be used as a medicine for fever.