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Longzhu Li,Huidong Tang,Yuwei Chen,Rong Yang,Daxiang Tian,Zhidong Chen 대한금속·재료학회 2020 ELECTRONIC MATERIALS LETTERS Vol.16 No.5
The photoelectrocatalytic water splitting performance of the pristine hematite is limited because of its poor bulk chargeseparation efficiency. In this study, the lactic acid modified hematite films were grown in situ on Fluorine-doped tin oxidesubstrates by hydrothermal method and then annealed in nitrogen atmosphere. At 1.5 V versus RHE, the photocurrent densityof the optimal lactic acid modified hematite photoanode (0.075LA-Fe2O3) was 1.5 mA cm−2, which was three times that ofthe based hematite (0.5 mA cm−2). The enhanced photoelectrocatalytic performance of the lactic acid modified hematitewas attributed to its increased bulk charge separation efficiency caused by the oxygen vacancies and island-like pattern, aswell as its improved surface charge injection efficiency. The effect of lactic acid on the morphology, crystalline structure andphotoelectrocatalytic performance of the hematite photoanode are studied by systematical characterization.
Honglei Zhang,Longzhu Li,Changhai Liu,Wenchang Wang,Penghua Liang,Naotoshi Mitsuzak,Zhidong Chen 대한금속·재료학회 2018 ELECTRONIC MATERIALS LETTERS Vol.14 No.3
This work provides a facile anodic electrodeposition method for synthesizing carbon coated α-Fe2O3 photoanode followedby annealing treatment with argon atmosphere. Compared with bare hematite photoanode, the carbon coated α-Fe2O3 photoanodesannealed at lower temperature (Fe2O3/C-L) and higher temperature (Fe2O3/C-H) have higher photocurrent densityas 0.3 and 0.5 mA cm−2 (at 1.23 V vs. RHE), respectively. The excellent PEC performance is attributed to the synergisticreaction of carbon and vacancy oxygen. The morphology and properties of the sample were characterized with scanningelectron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, UV–Vis spectra, X-raydiffractometry, X-ray photoelectron spectra, and photoelectrical measurements.
신이현,이욱교,장규식,최영미,이희일,Longzhu JIN,Jixu LI,Longnan Chen,이동규,박찬 한국곤충학회 2011 Entomological Research Vol.41 No.1
Adult mosquito surveillance was conducted using black light traps in August of 2006 and 2007 at Wangging county and Yanji city, Jilin Province, China to identify the distribution of anopheline mosquitoes in northern China. A total of 2459 female mosquitoes comprising three genera and eight species including Anopheles (Anopheles) lesteri, An. (Ano.) kleini, An. (Ano.) pullus, Culex inatomii, Cx. orientalis, Cx. pipiens, Cx. bitaeniorhynchus and Aedes vexans nipponii were collected. The most commonly collected species was An. kleini which had not been previously reported from China. Anopheles sinensis sensu stricto is commonly collected throughout China, but was not collected from these areas.