摘要
Graphitic carbon nitride nanosheets （g-C3N4 NSs） hybridized nitrogen doped titanium dioxide （N-TiO2） nanofibers （GCN/NT NFs） have been synthesized in situ via a simple electrospinning process combined with a modified heat-etching method. The prepared GCN/NT NFs were characterized by a variety of methods and their photocatalytic activities were evaluated by hydrogen （H2） production from water splitting and degradation of rhodamine B in aqueous solution. It was found that the GCN/NT NFs have a mesoporous structure, composed of g-C3N4 NSs and N-doped TiO2 crystallites. The g-C3N4 NSs synthesized after heat-etching were found to be embedded in, and covered, the hybrid NFs to form stable interfaces. The partial decomposition of g-C3N4 releases its nitrogen content which eventually gets doped into the nearby TiO2 skeleton. The GCN/NT NFs give a high photocatalytic H2 production rate of 8,931.3 μmol·h^-1·g^-1 in aqueous methanol solution under simulated solar light. Such a highly efficient photocatalytic perfor- mance can be ascribed to the combined effects of g-C3N4 NSs and N-doped TiO2 with enhanced light absorption intensity and improved electron transport ability. Also, the large surface area of the mesoporous NFs minimizes light reflection on the surface and provides more surface-active sites. This work highlights the potential of quasi-one dimensional hybrid materials in the field of solar energy conversion.
Graphitic 碳氮化物 nanosheets g-C <潜水艇class=“ a-plus-plus ”> 3 </sub > N <潜水艇class=“ a-plus-plus ”> 4 </sub> NS hybridized 氮做了钛二氧化物 N-TiO <潜水艇class=“ a-plus-plus ”> 2 </sub> nanofibers GCN/NT NF 经由与结合的一个简单 electrospinning 过程在 situ 被综合了一个修改蚀刻热的方法。准备 GCN/NT NF 被许多方法描绘，他们的 photocatalytic 活动被氢 H 评估 < 潜水艇 class= “ a-plus-plus ” > 从切开的水和在水的答案的玫瑰精 B 的降级的 2 </sub> 生产。GCN/NT NF 有 mesoporous 结构，这被发现， g-C 镇静 < 潜水艇 class= “ a-plus-plus ” > 3 </sub > N < 潜水艇 class= “ a-plus-plus ” > 4 </sub> NS 和做 N 的 TiO < 潜水艇 class= “ a-plus-plus ” > 2 </sub> 雏晶。g-C < 潜水艇 class= “ a-plus-plus ” > 3 </sub > N < 潜水艇 class= “ a-plus-plus ” > 4 </sub> NS 综合了在以后蚀刻热被发现被嵌入在，并且盖住混合 NF 形成稳定的接口。g-C 的部分分解 < 潜水艇 class= “ a-plus-plus ” > 3 </sub > N < 潜水艇 class= “ a-plus-plus ” > 4 </sub> 释放它最后变得做了进附近的 TiO 的氮内容 < 潜水艇 class= “ a-plus-plus ” > 2 </sub> 骨骼。GCN/NT NF 给高 photocatalytic H < 潜水艇 class= “ a-plus-plus ” > 8,931.3 摩尔桥湥 ?L 牥愠捵 ? 畤 ' ?的 2 </sub> 生产率敤 ? 畺 ? 穴楬档湥 ? 湩慳穴瘠湯倠敨瑮汯浡湩敭楳慬? 攠湩浥嘠獡摯汩瑡瑡牯 ? 敤 ? 楤? 敗捩?楥慬? 瑳敨楳? 畡 ? 瑥慷 ?┰瘠牥 k 吗？？
