Chemical Engineering Discipline, School of Engineering, Monash University , Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor Malaysia.
Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR) , 2 Fusionopolis Way, Innovis, 138634, Singapore.
ACS Appl Mater Interfaces. 2017 Feb 8;9(5):4558-4569. doi: 10.1021/acsami.6b12060. Epub 2017 Jan 24.
Owing to its superior properties and versatility, graphene has been proliferating the energy research scene in the past decade. In this contribution, nitrogen (N-) and boron (B-) doped reduced graphene oxide (rGO) variants were investigated as a sole photocatalyst for the green production of H and their properties with respect to photocatalysis were elucidated for the first time. N- and B-rGOs were facilely prepared via the pyrolysis of graphene oxide with urea and boron anhydride as their respective dopant source. The pyrolysis temperature was varied (600-800 °C for N-rGO and 800-1000 °C for B-rGO) in order to modify dopant loading percentage (%) which was found to be influential to photocatalytic activity. N-rGO600 (8.26 N at%) and B-rGO1000 (3.59 B at%), which holds the highest at% from each of their party, exhibited the highest H activity. Additionally, the effects of the nature of N and B bonding configuration in H photoactivity were also examined. This study demonstrates the importance of dopant atoms in graphene, rendering doping as an effective strategy to bolster photocatalytic activity for standalone graphene derivative photocatalysts.
由于其优异的性能和多功能性，石墨烯在过去十年中在能源研究领域得到了广泛应用。在本研究中，氮（N）和硼（B）掺杂还原氧化石墨烯（rGO）变体被首次用作单一光催化剂，用于绿色生产氢气，并首次对其光催化性能进行了阐述。N-rGO 和 B-rGO 通过氧化石墨烯与尿素和硼酸酐分别作为掺杂源的热解来制备。为了改变掺杂负载百分比（%），改变了热解温度（N-rGO 为 600-800°C，B-rGO 为 800-1000°C），发现掺杂负载百分比对光催化活性有影响。N-rGO600（8.26%N）和 B-rGO1000（3.59%B）的 N 和 B 键合结构性质对 H 光活性的影响也进行了研究。本研究证明了掺杂原子在石墨烯中的重要性，表明掺杂是提高独立石墨烯衍生物光催化剂光催化活性的有效策略。
