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Cobalt(II) Hematoporphyrin IX immobilized in a cellulose acetate niobium(V) oxide composite membrane: preparation and oxygen reduction study

机译：固定在醋酸纤维素氧化铌（V）复合膜中的血卟啉钴（II）：制备和氧还原研究

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Hematoporphyrin IX [8,13,-bis(1-hydroxyethyl)-3,7,12,17-tetramethyl-21H-porphyrin-2,18-dipropionic acid] was adsorbed on the organic-inorganic composite membrane Cel/Nb2O5 surface. The porphyrin is strongly adhered on the Nb2O5 surface by reaction of the porphyrin CO2H groups with Nb2O5 forming the -COO-Nb chemical bond. Metallation of the porphyrine ring was made very easily by immersing the membrane in Co(II) solution and allowing to rest for a few hours. The electronic absorption bands due to the Q bands indicated the symmetry change from D2h to D4h upon metallation of the porphyrin ring. The chemical analyses of the material confirmed that the metallation yield was practically 100%. Oxygen was reduced on a electrode surface made with the material under a cathodic peak potential of -390 mV, in 1 M KCl solution at pH 1, temperature of 298 K and at ambient pressure. The oxygen reduction was proposed to occur by a two electron transfer mechanism. A linear cathodic peak current response was obtained for dissolved oxygen concentrations between 1.5 and 15 ppm.

机译：血卟啉IX [8,13，-双（1-羟乙基）-3,7,12,17-四甲基-21H-卟啉-2,18-二丙酸]被吸附在有机-无机复合膜Cel / Nb2O5表面上。通过卟啉CO 2 H基团与形成-COO-Nb化学键的Nb 2 O 5反应，卟啉牢固地粘附在Nb 2 O 5表面上。通过将膜浸入Co（II）溶液中并静置几个小时，可以很容易地使卟啉环金属化。由于Q带而产生的电子吸收带表明在卟啉环金属化后，对称性从D2h变为D4h。材料的化学分析证实，金属化产率实际上为100％。在pH值为1，温度为298 K且环境压力为1 M的KCl溶液中，在-390 mV的阴极峰值电位下，用该材料制成的电极表面上的氧气被还原。提出氧还原是通过两电子转移机理发生的。对于溶解氧浓度在1.5和15 ppm之间的线性阴极峰值电流响应。

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Gushikem, Yoshitaka; Campos, Elvio A.;
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1. Cobalt(II) Hematoporphyrin IX immobilized in a cellulose acetate niobium(V) oxide composite membrane: preparation and oxygen reduction study [J] . Elvio A. Campos, Yoshitaka Gushikem Journal of the Brazilian Chemical Society . 1998,第3期

机译：固定在醋酸纤维素氧化铌（V）复合膜中的血卟啉钴（II）：制备和氧还原研究
2. Cobalt(II) hematoporphyrin IX and protoporphyrin IX complexes immobilized on highly dispersed titanium(IV) oxide on a cellulose microfiber surface: electrochemical properties and dissolved oxygen reduction study [J] . Silvio L. P. Dias, Yoshitaka Gushikem, Emerson S. Ribeiro, Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry . 2002,第1a2期

机译：血卟啉IX和原卟啉IX络合物固定在纤维素微纤维表面高度分散的四氧化钛上：电化学性能和溶解氧还原研究
3. Cobalt(II) metallated hematoporphyrin IX and protoporphyrin IX immobilized on niobium(V) oxide grafted on a silica gel surface: electrochemical studies [J] . Christiana A. Pessoa, Yoshitaka Gushikem Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry . 1999,第2期

机译：钴（II）金属化的血卟啉IX和原卟啉IX固定在接枝到硅胶表面的氧化铌（V）上：电化学研究
4. Preparation of Cellulose Acetate Nanofiitration (NF) Membrane and Its Performance [C] . Liu Yurong International symposium on membrane technology and environmental protection . 2000

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5. I. Oxidative degradation of cellulose-acetate rayon. II. Thermal degradation of some cellulosic textiles by steam. [D] . Ester, Virginia Charlotte. 1943

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7. Preparação de membranas de acetato de celulose organomodificadas para adsorção dos íons Cu(II), Cd(II), Mn(II) e Ni(II) Preparation of the orgamomodified cellulose acetate membranes for adsorption of the ions Cu(II), Cd(II), Mn(II) AND Ni(II) [O] . Danielle Goveia, Fabiana Aparecida Lobo, Ubirajara Pereira Rodrigues Filho, 2010

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8. Research Leading to an Improved Artificial Kidney. I. Further Development of Cellulose Acetate Dialysis Membranes. II. Laser Doppler Flowmeter [R] . Sparks, R. E., Lindan, O., Angus, J. C., 1968

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Cobalt(II) Hematoporphyrin IX immobilized in a cellulose acetate niobium(V) oxide composite membrane: preparation and oxygen reduction study

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