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Efficient utilization of solar energy is highly desirable in the field of photocatalysis. However, the near-infrared part of the solar spectrum, which constitutes about 44% of sunlight, has rarely been used. Herein, we report that the TiO_2 coupled with MXene Ti_3C_2 nanosheets shows promising photoactivity for ethylene oxidation under near infrared light(NIR) irradiation. Moreover, the Pt nanoparticle decoration can dramatically improve the performance of TiO_2–Ti_3C_2 nanocomposites. Within 15 minutes irradiation of the NIR light, 444 ppm of C_2 H_4 is completely removed over 1 wt%Pt–TiO_2–Ti_3C_2 and the catalyst exhibits excellent stability. It is expected that our work could provide useful information for the design and synthesis of efficient and stable NIR active photocatalyst for the target applications. 相似文献
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首先,基于灰色Verhulst的直接建模模型,对原始数据进行倒数生成,利用离散思想和序列累减,构建了倒数序列与倒数的一次累减序列间的关系式,并利用最小二乘法求解三参数;其次,从新关系式出发,构建了基于相邻的原始序列的新灰色Verhulst的离散直接建模模型,将三参数值代入即可求解模拟预测值;通过实例计算,表明模型的可操作性和优越性. 相似文献
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针对区间数多指标系统的决策特点,对指标数据初始化处理时,利用"奖优罚劣"原则,提出了一种新的易于计算且实用的S_i到[-1,1]的线性变换,然后定义正、负理想方案,建立了一种新的区间数多指标灰色综合关联度分析决策模型.该模型为区间数多指标决策提供了一种科学、实用的方法,并已利用现有的实例来证实此方法的科学性与可行性. 相似文献
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