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首页> 外文期刊>ACS applied materials & interfaces >Advanced TiO2-SiO2 Sulfur (Ti-Si-S) Nanohybrid Materials: Potential Adsorbent for the Remediation of Contaminated Wastewater
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Advanced TiO2-SiO2 Sulfur (Ti-Si-S) Nanohybrid Materials: Potential Adsorbent for the Remediation of Contaminated Wastewater

机译：先进的TiO2-SiO 2硫（Ti-Si-S）纳米冬冬醛材料：用于修复污染废水的潜在吸附剂

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摘要

In this present work, TiO2-SiO2-sulfur (Ti-Si-S) nanohybrid material was successfully prepared using TiO2 nano powder, TEOS sol-gel precursor, and elemental sulfur as raw material by sol-gel process and hydrothermal method at 120 degrees C temperature. Raman spectroscopy, XRD, SEM, TEM, and N-2 absorption-desorption characterized the synthesized nanohybrid material. The characterization results confirmed the homogeneous distribution of sulfur in the nanohybrid material. The size of the Ti-Si-S nanohybrid material is vary between 20 and 40 nm and the surface areas of the nanohybrid material was measured using N-2 absorption-desorption, which showed value of 57.2 m(2) g(-1).The potential of Ti-Si-S nanohybrid material as an adsorbent was further tested to adsorb methylene blue (MB) from aqueous solution. Adsorption performance of hybrid material was highly influenced by the solution pH and mass of adsorbent. The adsorption of MB using Ti-Si-S nanohybrid material was homogeneous monolayer adsorption, which followed the Langmuir adsorption isotherm with a value of 804.80 mg g(-1) and pseudo-second-order rate equation. The dye diffusion mechanism partially followed intraparticle and liquid film diffusion mechanisms. Thermodynamics studies predicted the spontaneous and endothermic nature of the whole adsorption process. The Ti-Si-S nanohybrid material was used for six repeated cycles of MB dye adsorption-desorption.
机译：在本工作中，通过溶胶 - 凝胶工艺和120度的水热法成功地制备TiO2-SiO 2-硫（Ti-Si-S）纳米含有纳米含量（Ti-Si-S）纳米胺材料。 C温度。拉曼光谱，XRD，SEM，TEM和N-2吸收 - 解吸特征在于合成的纳米混合物。表征结果证实了纳米混合物中硫的均匀分布。 Ti-Si-S纳米混合物的尺寸在20至40nm之间变化，并且使用N-2吸收 - 解吸测量纳米冬小麦材料的表面积，其显示为57.2μm（2）g（-1） 。Ti-Si-S纳米胺材料作为吸附剂的潜力进一步测试以从水溶液吸附亚甲基蓝（Mb）。杂化材料的吸附性能受到溶液pH和吸附剂质量的高度影响。使用Ti-Si-S纳米冬野材料的Mb吸附是均匀的单层吸附，其随后具有804.80mg G（-1）和伪二阶速率方程的值。染料扩散机构部分遵循粒前和液膜扩散机构。热力学研究预测了整个吸附过程的自发性和吸热性质。 Ti-Si-S纳米胺材料用于六个重复循环的MB染料吸附 - 解吸。

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