Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM. Km.12 de la carretera Toluca-Atlacomulco, San Cayetano, 50200 Estado de México México ; División de Estudios de Posgrado e Investigación, Instituto Tecnológico de Querétaro, Av. Tecnológico s/n Esq. M. Escobedo, Col. Centro Histórico, 76000 Querétaro, México ; Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, 76230 Querétaro, México.
Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM. Km.12 de la carretera Toluca-Atlacomulco, San Cayetano, 50200 Estado de México México.
J Environ Health Sci Eng. 2015 Apr 19;13:33. doi: 10.1186/s40201-015-0184-0. eCollection 2015.
Graphite and graphene oxides have been studied amply in the last decade, due to their diverse properties and possible applications. Recently, their functionality as photocatalytic materials in water splitting was reported. Research in these materials is increasing due to their band gap values around 1.8-4 eV, and therefore, these are comparable with other photocatalysts currently used in heterogeneous photocatalytic processes. Thus, this research reports the photocatalytic effectiveness of graphite oxide (GO) and graphene oxide (GEO) in the degradation of 4-chlorophenol (4-CP) in water. Under the conditions defined for this research, 92 and 97% of 4-CP were degraded with GO and GEO respectively, also 97% of total organic carbon was removed. In addition, by-products of 4-CP that produce a yellow solution obtained only using photolysis are eliminated by photocatalyst process with GO and GEO. The degradation of 4-CP was monitored by UV-Vis spectroscopy, High Performance Liquid Chromatography (HPLC) and Chemical Oxygen Demand (COD). Thus, photocatalytic activity to remove 4-CP from water employing GO and GEO without doping is successfully showed, and therefore, a new gate in research for these materials is opened.
在过去的十年中，由于其多样的性质和潜在的应用，石墨和石墨烯氧化物得到了广泛的研究。最近，它们在水分解中的光催化材料的功能也得到了报道。由于这些材料的带隙值约为 1.8-4 eV，与目前用于非均相光催化过程的其他光催化剂相当，因此对这些材料的研究正在增加。因此，本研究报告了氧化石墨（GO）和氧化石墨烯（GEO）在水中降解 4-氯苯酚（4-CP）方面的光催化效果。在本研究定义的条件下，GO 和 GEO 分别降解了 92%和 97%的 4-CP，同时也去除了 97%的总有机碳。此外，仅用光解产生黄色溶液的 4-CP 的副产物也被 GO 和 GEO 光催化剂过程消除。通过紫外可见分光光度法、高效液相色谱（HPLC）和化学需氧量（COD）监测 4-CP 的降解。因此，成功地展示了在不掺杂的情况下，使用 GO 和 GEO 从水中去除 4-CP 的光催化活性，从而为这些材料的研究开辟了新的途径。
