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Hydrogen Peroxide Production on a Carbon Nitride–Boron Nitride‐Reduced Graphene Oxide Hybrid Photocatalyst under Visible Light
ChemCatChem ( IF 3.8 ) Pub Date : 2018-03-06 , DOI: 10.1002/cctc.201701683 Yusuke Kofuji 1 , Yuki Isobe 1 , Yasuhiro Shiraishi 1, 2 , Hirokatsu Sakamoto 1 , Satoshi Ichikawa 3 , Shunsuke Tanaka 4 , Takayuki Hirai 1
ChemCatChem ( IF 3.8 ) Pub Date : 2018-03-06 , DOI: 10.1002/cctc.201701683 Yusuke Kofuji 1 , Yuki Isobe 1 , Yasuhiro Shiraishi 1, 2 , Hirokatsu Sakamoto 1 , Satoshi Ichikawa 3 , Shunsuke Tanaka 4 , Takayuki Hirai 1
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Photocatalytic production of hydrogen peroxide (H2O2) from earth‐abundant water and O2 is a desirable artificial photosynthesis for solar fuel production. A metal‐free hybrid photocatalyst consisting of pyromellitic diimide‐doped carbon nitride (g‐C3N4/PDI), boron nitride (BN), and reduced graphene oxide (rGO) was prepared. The g‐C3N4/PDI‐BN‐rGO catalyst, when photoirradiated in water with O2 by visible light at room temperature, efficiently produces H2O2. The photoexcited g‐C3N4/PDI moiety transfers the conduction band electrons to rGO, leading to selective production of H2O2 via two‐electron reduction of O2 on the rGO surface. In contrast, the valence‐band holes photoformed on the g‐C3N4/PDI moieties are transferred to BN, leading to efficient oxidation of water. The electron–hole separation enhanced by the incorporation of rGO and BN significantly suppresses the charge recombination and exhibits high photocatalytic activity. The solar‐to‐chemical conversion (SCC) efficiency for H2O2 production on the hybrid catalyst is 0.27 %, which is higher than the highest efficiencies obtained by overall water splitting on powdered catalysts.
中文翻译：
可见光下氮化碳-氮化硼还原的氧化石墨烯杂化光催化剂上的过氧化氢生产
由富含土壤的水和O 2光催化生产过氧化氢（H 2 O 2）是太阳能生产中理想的人工光合作用。制备了由均苯四甲二酰亚胺掺杂的氮化碳（g-C 3 N 4 / PDI），氮化硼（BN）和还原的氧化石墨烯（rGO）组成的无金属杂化光催化剂。g‐C 3 N 4 / PDI‐BN‐rGO催化剂在室温下用可见光在水中用O 2光照射时，会有效地产生H 2 O 2。受光激发的g‐C 3 N 4/ PDI部分传输的导带电子到RGO，导致选择性地生产为h 2 ö 2通过的O 2电子还原2的RGO表面上。相反，在g‐C 3 N 4 / PDI部分上形成的价带孔被转移到BN中，导致水的有效氧化。rGO和BN的引入增强了电子-空穴的分离，从而显着抑制了电荷的重组并表现出很高的光催化活性。H 2 O 2的太阳能转换效率 杂化催化剂的总产率为0.27％，高于粉状催化剂上全部水分解得到的最高效率。
更新日期：2018-03-06
中文翻译：
可见光下氮化碳-氮化硼还原的氧化石墨烯杂化光催化剂上的过氧化氢生产
由富含土壤的水和O 2光催化生产过氧化氢（H 2 O 2）是太阳能生产中理想的人工光合作用。制备了由均苯四甲二酰亚胺掺杂的氮化碳（g-C 3 N 4 / PDI），氮化硼（BN）和还原的氧化石墨烯（rGO）组成的无金属杂化光催化剂。g‐C 3 N 4 / PDI‐BN‐rGO催化剂在室温下用可见光在水中用O 2光照射时，会有效地产生H 2 O 2。受光激发的g‐C 3 N 4/ PDI部分传输的导带电子到RGO，导致选择性地生产为h 2 ö 2通过的O 2电子还原2的RGO表面上。相反，在g‐C 3 N 4 / PDI部分上形成的价带孔被转移到BN中，导致水的有效氧化。rGO和BN的引入增强了电子-空穴的分离，从而显着抑制了电荷的重组并表现出很高的光催化活性。H 2 O 2的太阳能转换效率 杂化催化剂的总产率为0.27％，高于粉状催化剂上全部水分解得到的最高效率。
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