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Journal of Environmental Sciences 2023年第4期126卷 556-564页

作者： Yaru Wang Yechen Wang Xubo Huang Min Chen Yiming Xu State Key Laboratory of Silicon Materials and Department of Chemistry Zhejiang UniversityHangzhou 310027China

Nickel (hydr)oxide (NiOH) is known to be good co-catalyst for the photoelectrochemical oxidation of water,and for the photocatalytic oxidation of organics on different *** we report a greatly improved activity of Bi_(2)MoO_(6)(BMO) by nickel hexammine perchlorate (NiNH).Under visible light,phenol oxidation on BMO was *** NiNH,NiOH,and Ni^(2+)loading,a maximum rate of phenol oxidation increased by factors of approximately 16,8.8,and 4.7,*** a BMO electrode,all catalysts inhibited O_(2)reduction,enhanced water (photo-)oxidation,and facilitated the charge transfer at solidliquid interface,respectively,the degree of which was always NiNH>NiOH>Ni^(2+).Solid emission spectra indicated that all catalysts improved the charge separation of BMO,the degree of which also varied as NiNH>NiOH>Ni^(2+).Furthermore,after a phenol-free aqueous suspension of NiNH/BMO was irradiated,there was a considerable Ni(Ⅲ) species,but a negligible NH_(2)***,a plausible mechanism is proposed,involving the hole oxidation of Ni(Ⅱ) into Ni(Ⅳ),which is reactive to phenol oxidation,and hence promotes O_(2)*** NH_(3)is a stronger ligand than H_(2)O,the Ni(Ⅱ) oxidation is easier for Ni(NH_(3))6+than for Ni(H_(2)O)6+.This work shows a simple route how to improve BMO photocatalysis through a co-catalyst.

关键词： Semiconductor Photocatalysis organic degradation Water oxidation Bismuth molybdate Nickel hexammine perchlorate

Synthesis of a sulfur-graphene composite as an enhanced metal-free photocatalyst

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Nano Research 2013年第4期6卷 286-292页

作者： Wenchao Peng Xiaoyan Li Environmental Engineering Research Centre Department of Civil Engineering The University of Hong Kong Pokfulam Hong Kong China

A novel metal-free photocatalyst--sulfur/graphene （S/GR） composite--has been synthesized using a facile one-pot, two-step hydrothermal method with thiosulfate and graphene oxide （GO） as precursors. A green reductant--L-ascorbic add--was used to transform GO to GR under mild conditions. The photocatalyst powders were characterized by Fourier transform infrared spectroscop, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and energy dispersive spectroscopy. Experimental tests were conducted on the photocatalytic decomposition of methyl orange （MO） by different catalysts. Compared to pure oL-S, the as-prepared S/GR composite showed much enhanced photocatalytic activity for the degradation of MO under both UV and solar light. The presence of GR also greatly increased the hydrophilicity and adsorption capacity of the catalyst material. The results indicate that the incorporation of GR with a-S results in a synergistic effect for the S-based photocatalysts offering more effective environmental applications.

关键词： metal-free catalyst a-sulfur graphene photocatalysis methyl orange organic degradation

Treated results study on organic substance and ammonia from coke plant wastewater by SBR method in different operating mode and aeration time conditions

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Journal of Coal Science & Engineering(China) 2006年第1期12卷 43-48页

作者：程建光陈平 School of Chemical and Environmental Engineering China University of Mining and Technology Beijing 100083 China College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266510 China College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266510 China

In this paper, a research was made on the treatment of distillation ammonia wastewater from Tai'an Coke-Plant by SBR(sequencing batch reactors). The feasibility and cost effectiveness was tested. Performance of SBR process treating organic substance and ammonia was presented for different operating pattern and aeration time. The mechanism of the simultaneous nitrification and denitrification from coke plant were analysed on SBR process.

关键词： SBR method coke-plant wastewater organic degradation biological nitrogen removal

The influence of anoxia design and change aerations time on the treatment from coke plant wastewater

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Journal of Coal Science & Engineering(China) 2010年第2期16卷 182-187页

作者： ZHU Shou-dong CHENG Jian-guang College of Geological Science and Engineering Shandong University of Science and Technology Qingdao 266510 China Ningxia Coal Mining Company Yinchuan 750000 China

According to a great deal of experimental findings and the oretical analysis, theperformance of SBR process treating organic substance and ammonia was presented for different operating pattern and aeration *** the operation mode is feeding water,anoxie mixing 2.5 h, settlement, and draining for 1.5 h, the coke plant wastewater can be treated well by the SBR method.

关键词： SBR method coke-plant wastewater organic degradation biological nitrogen removal

The influence of pH value and adding pulverized fuel ash on the SBR treatment system

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Journal of Coal Science & Engineering(China) 2010年第1期16卷 69-73页

According to a great deal of experimental findings and theoretical analysis, when the COD of inlet is 1 000-1 200 mg/L, NH3--N is 200~250 mg/L, the periodic time of operation is 24 h, the aeration time is 16 h and the sludge density is 5 000-7 000 mg/L, COD of outlet is 150-200 mg/L, NH3--N is less than 25 mg/L, the volume load of COD and NH3--N remove 0.50 and 0.12 kg/（m3od） respectively. Meanwhile, studied the influence of various crafts parameter change on the treating effect and absorbing the yielding water of the SBR reactor with pulverized coal ash for improving the removing effect of COD and chromaticity further.

关键词： SBR method coke-plant wastewater organic degradation pulverized fuel ash