Kim Ji Hyeon, Ma Ahyeon, Jung Haeun, Kim Ha Young, Choe Hye Rin, Kim Young Heon, Nam Ki Min
Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.
Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, 99 Daehak-ro, Daejeon 34134, Republic of Korea.
ACS Omega. 2019 Oct 11;4(17):17359-17365. doi: 10.1021/acsomega.9b02111. eCollection 2019 Oct 22.
A single-crystalline BiS nanowire array (BiSNWA) is synthesized by an in situ hydrothermal reaction on the surface of a BiMoO film. As no additional source of Bi is provided during the process, the BiMoO layer acts as the Bi source for the synthesis of BiS nanowires. The fabricated BiMoO/BiSNWA electrode exhibited an increased photoelectrochemical (PEC) sulfite oxidation activity, which is attributed mainly to the effective interface obtained by the in situ hydrothermal growth, compared to other BiS electrodes. The generated electron from the BiS conduction band rapidly transfers to that of BiMoO, yielding an enhanced electron separation of BiS. Furthermore, the single-crystalline BiS nanowire can provide a fast electron pathway to BiMoO through its single domain, which also contributes to the improved PEC activity.
通过在BiMoO薄膜表面原位水热反应合成了单晶BiS纳米线阵列（BiSNWA）。由于在此过程中未提供额外的Bi源，BiMoO层充当了合成BiS纳米线的Bi源。与其他BiS电极相比，制备的BiMoO/BiSNWA电极表现出增强的光电化学（PEC）亚硫酸盐氧化活性，这主要归因于原位水热生长获得的有效界面。从BiS导带产生的电子迅速转移到BiMoO的导带，从而增强了BiS的电子分离。此外，单晶BiS纳米线可通过其单畴为BiMoO提供快速电子通道，这也有助于提高PEC活性。
