2-chloro-4,6-dinitroresorcinol (CDNR) is detrimental to the environment and human health owing to its high toxicity and poor biodegradability. To demonstrate the feasibility of photocatalytic degradation of CDNR from industrial salty wastewater by borosilicate glass supported TiO2 under UV light irradiation, borosilicate glass supported TiO2 was prepared successfully by a novel sol-gel route via dip-coating method and characterized by XRD, SEM, FTIR and XPS analysis. The results showed that TiO2 catalyst has the anatase phase structure with crystallite size of 11.5 nm and coats uniformly on the borosilicate glass. Also, the effects of reaction time, pH value, TiO2 dosage, CDNR concentration, and Cl− on the degradation efficiency of CDNR were investigated. The results indicated that at pH 2, reaction time 3.5h, CDNR concentration 10mg/L, NaCl concentration 5.85% (w/w) and TiO2 dosage 1.0g/L, 97.7% of CDNR was degraded in the presence of Cl−, this corresponded to a rate constant of 1.05 h−1, illustrating the feasibility of photocatalytic degradation process. This contribution provides a basic investigation regarding the potential application of borosilicate glass supported TiO2.

中文翻译：

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玻璃负载二氧化钛光催化降解含盐工业废水中的2-氯-4,6-二硝基间苯二酚

2-氯-4,6-二硝基间苯二酚（CDNR）毒性大、生物降解性差，对环境和人类健康有害。为证明硼硅玻璃负载 TiO2 在紫外光照射下光催化降解工业含盐废水中 CDNR 的可行性，采用新型溶胶-凝胶法通过浸涂法成功制备了硼硅玻璃负载 TiO2，并通过 XRD、SEM、FTIR 进行表征。和 XPS 分析。结果表明，TiO2催化剂具有锐钛矿相结构，晶粒尺寸为11.5 nm，并均匀地包覆在硼硅玻璃上。此外，还研究了反应时间、pH 值、TiO2 用量、CDNR 浓度和 Cl− 对 CDNR 降解效率的影响。结果表明，pH 2，反应时间3.5h，CDNR浓度10mg/L，NaCl 浓度 5.85% (w/w) 和 TiO2 用量 1.0g/L，在 Cl- 存在下，97.7% 的 CDNR 被降解，这对应于 1.05 h-1 的速率常数，说明光催化降解过程的可行性。这一贡献提供了关于硼硅玻璃负载 TiO2 的潜在应用的基本调查。