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管状g-C_(3)N_(4)/ZnIn_(2)S_(4)纳米片异质结通过促进电荷分离实现高效光催化合成H_(2)O_(2) 被引量:3
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作者 王俊霞 郭昌梁 +4 位作者 江勇 万家峰 郑冰 李玉鑫 蒋保江 《Science China Materials》 SCIE EI CAS CSCD 2023年第3期1053-1061,共9页
过氧化氢(H_(2)O_(2))是一种环保的活性氧和重要的绿色氧化剂.然而,到目前为止,实现高效和绿色可持续H_(2)O_(2)生产仍然面临挑战.本文中,我们展示了管状氮化碳(TCN)和ZnIn_(2)S_(4)(ZIS)纳米片(TCN/ZIS)异质结的光催化产H_(2)O_(2)性... 过氧化氢(H_(2)O_(2))是一种环保的活性氧和重要的绿色氧化剂.然而,到目前为止,实现高效和绿色可持续H_(2)O_(2)生产仍然面临挑战.本文中,我们展示了管状氮化碳(TCN)和ZnIn_(2)S_(4)(ZIS)纳米片(TCN/ZIS)异质结的光催化产H_(2)O_(2)性能:3小时内H_(2)O_(2)的生产速率为2.77 mmol g-1h-1,分别为单独的TCN和ZIS的3.4倍和23.1倍.实验结果表明,TCN/ZIS异质结优异的光催化活性主要源于ZIS促进了电荷分离从而通过将O_(2)还原为·O_(2)-,然后生成H_(2)O_(2)来实现质子耦合电子转移过程.该工作提出了一种高效、绿色的H_(2)O_(2)生产策略,对环境修复具有重要科学意义和实用价值. 展开更多
关键词 电荷分离 生产速率 环境修复 氮化碳 绿色氧化剂 面临挑战
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Catalytic wet air oxidation of phenol, nitrobenzene and aniline over the multi-walled carbon nanotubes (MWCNTs) as catalysts
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作者 Shaoxia YANG Yu SUN +1 位作者 Hongwei YANG jiafeng wan 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2015年第3期436-443,共8页
Wet air oxidation (WAO) is one of effective technologies to eliminate hazardous, toxic and highly concentrated organic compounds in the wastewater. In the paper, multi-walled carbon nanotubes (MWCNTs), functionali... Wet air oxidation (WAO) is one of effective technologies to eliminate hazardous, toxic and highly concentrated organic compounds in the wastewater. In the paper, multi-walled carbon nanotubes (MWCNTs), functionalized by 03, were used as catalysts in the absence of any metals to investigate the catalytic activity in the catalytic wet air oxidation (CWAO) of phenol, nitrobenzene (NB) and aniline at the mild operating conditions (reaction temperature of 155℃ and total pressure of 2.5 MPa) in a batch reactor. The MWCNTs were characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM), gas adsorption measurements (BET), fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The functionalized MWCNTs showed good catalytic performance. In the CWAO of phenol over the functionalized MWCNTs, total phenol removal was obtained after 90 rain run, and the reaction apparent activation energy was ca. 40kJ · mol^-1. The NB was not removed in the CWAO of single NB, while ca. 97% NB removal was obtained and 40% NB removal was attributed to the catalytic activity after 180 min run in the presence of phenol. Ca. 49% aniline conversion was achieved after 120 min run in the CWAO of aniline. 展开更多
关键词 catalytic wet nanotubes (CNTs) PHENOL air oxidation (CWAO) carbon nitrobenzene ANILINE
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