Modification of cellulose with TiO2 nanoparticles: Potential solar driven photocatalyst and adsorbent

IF 3 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Journal of Environmental Health Science and Engineering Pub Date : 2023-11-23 DOI:10.1007/s40201-023-00884-9

Deepti Sharma, Jai Prakash Mishra, Veena Dhayal

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Abstract

In-situ modification of cellulose fibers with titania nanoparticles (TiO₂ NPs) (TiO₂ NPs-cellulose) was carried out via the sol–gel process using titania sol and fibers of cellulose. Cellulose fibers were extracted from wheat straw, an agricultural waste material, whereas titania sol was prepared from titanium(IV) acetoximate, [Ti{ONC(CH₃)₂}₄]. The synthesized TiO₂ NPs-cellulose composite was characterized by FT-IR, SEM–EDX, and XRD analyses. The obtained results exposed that TiO₂ NPs were homogeneously dispersed over the surface of cellulose fibers. A study was conducted to compare the photocatalytic activities of TiO₂ NPs-cellulose composite and TiO₂ NPs towards the degradation of methylene blue and methyl orange dyes under sunlight, and it was observed that the photo-degradation of methylene blue (99.99%) and methyl orange (80.73%) within 160 min is higher in the presence of TiO₂ NPs-cellulose composite than TiO₂ NPs. The adsorption capabilities of TiO₂ NPs-cellulose composite towards Pb²⁺, Cd²⁺, and Cr³⁺ toxic metal ions were also examined, and it was found 44.73 mg. g⁻¹ (89.46%), 38.82 mg. g⁻¹ (77.65%), and 4.42 mg. g⁻¹ (8.85%), respectively. Removal of pollutants from textile industrial effluent were also investigated using TiO₂ NPs-cellulose composite under sun light. The results obtained were very promising which shows potential of TiO₂ NPs-cellulose composite as an efficient photocatalyst and absorbent for real time applications.

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二氧化钛纳米颗粒改性纤维素:潜在的太阳能驱动光催化剂和吸附剂

以二氧化钛溶胶和纤维素纤维为原料，采用溶胶-凝胶法制备了二氧化钛纳米粒子(TiO2 NPs) (TiO2 NPs-纤维素)原位改性纤维素纤维。以农业废弃物麦秸为原料提取纤维素纤维，以乙酰肟酸钛[Ti{ONC(CH3)2}4]为原料制备二氧化钛溶胶。采用FT-IR、SEM-EDX和XRD对合成的TiO2 nps -纤维素复合材料进行了表征。结果表明，TiO2纳米粒子均匀地分散在纤维素纤维表面。比较了TiO2 NPs-纤维素复合材料和TiO2 NPs在阳光下降解亚甲基蓝和甲基橙染料的光催化活性，发现在TiO2 NPs-纤维素复合材料存在下，160 min内亚甲基蓝(99.99%)和甲基橙(80.73%)的光降解率高于TiO2 NPs。TiO2 nps -纤维素复合材料对Pb2+、Cd2+和Cr3+有毒金属离子的吸附能力也进行了测试，发现其吸附量为44.73 mg。G−1 (89.46%)，38.82 mg。G−1 (77.65%)，4.42 mg。G−1(8.85%)。研究了TiO2 nps -纤维素复合材料在日光下对纺织工业废水中污染物的去除效果。结果表明，二氧化钛nps -纤维素复合材料作为一种高效的光催化剂和吸收剂具有良好的实时应用前景。图形抽象

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来源期刊

Journal of Environmental Health Science and Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES

CiteScore

7.50

自引率

2.90%

发文量

期刊介绍： Journal of Environmental Health Science & Engineering is a peer-reviewed journal presenting timely research on all aspects of environmental health science, engineering and management. A broad outline of the journal''s scope includes: -Water pollution and treatment -Wastewater treatment and reuse -Air control -Soil remediation -Noise and radiation control -Environmental biotechnology and nanotechnology -Food safety and hygiene