Facile synthesis of B/g-C3N4 composite materials for the continuous-flow selective photo-production of acetone,Green Chemistry

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Facile synthesis of B/g-C3N4 composite materials for the continuous-flow selective photo-production of acetone
Green Chemistry ( IF 9.3 ) Pub Date : 2020-06-25 , DOI: 10.1039/d0gc01326a
Uriel Caudillo-Flores _{1,

2,

3,

4} , Daily Rodríguez-Padrón _{4,

5,

6,

7} , Mario J. Muñoz-Batista _{4,

8,

9,

10} , Anna Kubacka _{1,

2,

3,

4} , Rafael Luque _{4,

5,

6,

7,

11} , Marcos Fernández-García _{1,

2,

3,

4}

Affiliation

In this work versatile boron–carbon nitride composite materials were synthesized and utilized in a sustainable process using sunlight as the energy source for the continuous-flow selective photocatalytic production of acetone from 2-propanol. It is worth highlighting that the sample preparation was carried out by an environmentally friendly strategy, without a solvent or additional reagents. Samples containing boron in 1–10 wt% were subjected to physico-chemical characterization using XRD, porosimetry, UV-visible spectroscopy, TEM, energy-dispersive X-ray spectroscopy and XPS. The reaction output was analyzed on the basis of the reaction rate, selectivity and quantum efficiency of the process. A correlation analysis between catalytic properties with two observables, the boron phase distribution in the materials and charge handling efficiency (measured using photoluminescence), rationalizes photoactivity. Such an analysis indicates that the presence of an amorphous boron metallic phase and its contact with the carbon nitride component are key to setting up a renewable and easily scalable chemical process to obtain acetone.

中文翻译：

轻松合成B / g-C3N4复合材料用于丙酮的连续流选择性光生产

在这项工作中，合成了多种用途的硼碳氮化碳复合材料，并将其用于可持续的过程中，利用阳光作为能源，由2-丙醇连续流式选择性光催化生产丙酮。值得强调的是，样品制备是通过环保策略进行的，没有溶剂或其他试剂。使用XRD，孔隙率法，紫外可见光谱，TEM，能量色散X射线光谱和XPS对包含1-10 wt％硼的样品进行理化表征。基于反应速率，选择性和过程的量子效率来分析反应输出。具有两个可观察值的催化性能之间的相关性分析，材料中的硼相分布和电荷处理效率（使用光致发光测量）可合理化光活性。此类分析表明，非晶态硼金属相的存在及其与氮化碳组分的接触是建立可再生且易于扩展的化学工艺以获得丙酮的关键。

更新日期：2020-08-04

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