An enhanced production of biomethane from cellulose photoreforming driven by titania morphological modification

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2025-02-28 DOI:10.1007/s11144-025-02821-3

Wirda Udaibah, Didi Dwi Anggoro, Aji Prasetyaningrum, Abdullah Bafaqeer, Nor Aishah Saidina Amin

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Abstract

This article studies the influence of titania morphology on the biomethane production from cellulose through photoreforming. First, TiO₂ P25 was modified to titania nanotube (TiNT) via short-time hydrothermal reaction. It was confirmed by SEM and TEM that the nanotube morphology of titania could be obtained after heating at 150°C for 7 h. The XRD patterns of the produced powders showed the existence of anatase crystalline phases, with no appearance of rutile. Our mesoporous TiNT had the surface area twice larger than commercial TiO₂ P25 and its bandgap energy was 3.23 eV, which was smaller than TiO₂ P25. Its electron lifetime was longer than TiO₂ P25 (6.82 × 10^–8 s). Due to the better character of TiNT, its cellulose photoreforming to biomethane through TiNT was three times higher than that of TiO₂ P25. The photoreforming by TiNT was 17020 μmol g⁻¹ catalyst, while by TiO₂ P25 was 6560 μmol g⁻¹ catalyst. In this work we also proposed the mechanism of cellulose photoconversion. Overall, TiNT can be a potential photocatalyst in biomass photoreforming reaction.

Graphical Abstract

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二氧化钛形态修饰促进纤维素光重整生产生物甲烷

本文研究了二氧化钛形态对纤维素光重整制生物甲烷的影响。首先，通过短时间水热反应将TiO2 P25修饰为二氧化钛纳米管（TiNT）。通过SEM和TEM证实，在150℃下加热7 h后，二氧化钛的纳米管形貌可以得到。制备的粉末的XRD谱图显示存在锐钛矿晶相，没有金红石的形貌。我们的中孔TiNT的表面积比商用TiO2 P25大2倍，带隙能量为3.23 eV，比商用TiO2 P25小。其电子寿命比TiO2 P25长（6.82 × 10-8 s）。由于TiNT具有更好的性质，其纤维素通过TiNT光转化为生物甲烷的效率是TiO2 P25的3倍。TiNT催化剂的光转化量为17020 μmol g−1，TiO2 P25催化剂的光转化量为6560 μmol g−1。本文还提出了纤维素光转化的机理。综上所述，TiNT是一种潜在的生物质光重整反应光催化剂。图形抽象

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来源期刊

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.