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Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process

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Journal of Environmental Sciences 2015年第9期27卷 172-180页

作者： manke jia Xiaolong Hu Shulian Wang Yingping Huang Lirong Song Institute of Hydrobiology Chinese Academy of Sciences Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Collaborative Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area

In this study, bismuth oxyhalide（Bi OXs（X_Cl, Br, I）） semiconductors were prepared by a simple solvothermal method, with ethanol serving as solvent and a series of tetrabutylammonium halide surfactants as halogen sources. Under identical synthetic conditions, Bi OBr was more readily constructed into regular flower-like hierarchical architectures. The photocatalytic properties of the materials were studied by monitoring the degradation of rhodamine B（Rh B）,with visible light absorption, and colorless salicylic acid（SA）. It was found that both Rh B and SA were rapidly degraded on the surface of Bi OBr. Bi OCl was rather active for the degradation of Rh B,but ineffective toward the degradation of SA. However, neither Rh B nor SA could be degraded effectively in the case of Bi OI. Further experiments such as UV–visible spectroscopy and detection of U OH and O2 Uradicals suggest that the electronic structure of the Bi OX photocatalysts is responsible for the difference in their activities.

关键词： BiOXs(X_Cl Br I) Ethanol-assisted solvothermal process Photocatalytic properties

Heterogeneous degradation of toxic organic pollutants by hydrophobic copper Schiff-base complex under visible irradiation

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Science China Chemistry 2013年第12期56卷 1775-1782页

作者： SONG Quan jia manke MA WanHong FANG YanFen HUANG YingPing Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Collaborative Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area

A hydrophobic complex of Cu2+[bis-salicylic aldehyde-o-phenylenediamine],Cu-SPA,was prepared and used as a heterogeneous photocatalyst to degrade organic pollutants in water under visible irradiation(420 nm)at neutral *** structure of complex was characterized by using nuclear magnetic resonance(NMR),elemental analysis,IR and UV-vis *** of Rhodamine B(RhB),Sulforhodamine B(SRB)and Benzoic acid(BA)in water were used as model reactions to evaluate the photocatalytic activities of *** results indicated that RhB and SRB were easily adsorbed on the hydrophobic surface of Cu-SPA from aqueous solution(the maximum adsorption amount:Qmax=11.09 and 8.05μmol/g,respectively).Under visible irradiation,RhB and SRB were decolorized completely after 210 and 240 min,respectively,and BA was removed completely after 5 *** efficiency of H2O2was>95%,in contrast to that of the reaction without catalyst or light(<20%).In water soluble medium,the hydrophobic Cu-SPA can be used more than 6 *** results and the behavior of cyclic voltammetry showed that,in the reaction process,Cu2+-SPA was reduced to intermediate state Cu+-SPA firstly,which was extremely unstable and reacted rapidly with H2O2,leading to high reactive oxygen species(·OH radical)to degrade the substrate.

关键词：有毒有机污染物可见光照射疏水性异构希夫碱罗丹明B 最大吸附量退化

Reduction of Soil Cadmium Bioavailability by Using Industrial Byproduct Phosphorus Slag

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Wuhan University Journal of Natural Sciences 2020年第3期25卷 229-237页

作者： LI Yinghua jia manke HUA Ying YU Rui WANG Liuyang REN Dong LIU Liming Hubei International Scientific and Technological Cooperation Center of Ecological Conservation and Management in Three Gorges Area Yichang 443002HubeiChina Hubei Agricultural Environmental Monitoring Engineering Technology Research Center Yichang 443002HubeiChina

In this study,an alternative and cost-effective industrial byproduct phosphorus slag(PS)was utilized to treat simulated Cd-contaminated *** modified European Community Bureau of Reference(BCR)sequential extraction procedure was applied to assess the ability of PS to reduce Cd mobility in contaminated soil by the incubation *** results showed 2%(W/W)PS reduced the exchangeable fraction of Cd by 99.7%,which also increased the pH,electrical conductivity,cation exchange capacity,available phosphorus,and available silicon of the *** results suggested that the PS could decrease Cd bioavailability and improve soil *** was demonstrated by the pot *** Cd accumulation in both pakchoi(Brassica chinensis L.)leaf and root was reduced along with the reduction of the Cd translocation factor(TF)and the bioaccumulation factors(BCF)in *** Cd-contaminated soil(3.16 mg·kg^–1),the 2%(W/W)PS reduced the Cd content in the leaf and root of pakchoi by 70.7%and 58.7%,***,the increase of the chlorophyll content in pakchoi and the promotion of pakchoi root system development suggested healthy plant growth in the PS treated soil.

关键词： phosphorus slag cadmium immobilization bioavailability soil nutrient

Synthesis of a magnetic micro/nano Fe_xO_y-CeO_2 composite and its application for degradation of hexachlorobenzene

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Science China Chemistry 2010年第6期53卷 1266-1272页

作者： jia manke,SU GuiJin,ZHENG MingHui,ZHANG Bing & LIN ShiJing State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China

A micrometer-sized nanostructured,magnetic,ball-like FexOy-CeO2 composite was synthesized through an ethylene-glycol mediated *** synthesized samples were characterized by scanning electron microscopy combined with energydisperse X-ray analysis,transmission electron microscopy and X-ray powder *** the synthesis system,polyethylene glycol (PEG) and urea were found to play significant roles in the formation of the micrometer-sized spherical architecture of the *** details of morphology and particle size could be changed with the initial concentration of Fe(NO3)3-9H2O and Ce(NO3)3-6H2O as the *** magnetic FexOy-CeO2 composite with a similar morphology was readily obtained by calcination from the *** characterization of transmission electron microscopy showed the calcined ball-like architecture was a highly porous structure consisting of many *** of the micrometer-sized nanostructure and the multi-components as well as the magnetism,the as-obtained FexOy-CeO2 composite showed better activity and potentially easy recovery for the harmless degradation of hexachlorobenzene (HCB).

关键词： FexOy-CeO2 composite 3D micro/nanostructures degradation of hexachlorobenzene

Mechanism for Degradation of HCB on Self-Assembled Iron Oxide Micro-Nano Material

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Mechanism for Degradation of HCB on Self-Assembled Iron Oxid...

BiPO_4稀土掺杂改性及其可见光光催化性能

第五届全国环境化学大会

作者： manke jia Guijin Su Shijing Lin Minghui Zheng~* (Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,P.O.Box 2871, Beijing 100085,China

In this paper two micro-nano iron oxide materials were prepared,these particles are uniform flowerlike in shape and size with a diameter around 1.0～1.5μm,the petals of the flower are composed of interconnected nano crystals about 15nm in *** materials prepared were applied in the degradation of *** destruction of HCB by material with multiphase ofα-FeO and FeO was faster than that of pure phase

关键词： Micro-nano material Hexachlorobenzene Dechlorination

来源： cnki会议评论

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环境工程学报 2016年第5期10卷 2335-2343页

作者：赵萍熊世威张欣欣贾漫珂黄应平三峡大学生物与制药学院宜昌443002 三峡库区生态环境教育部工程研究中心(三峡大学) 宜昌443002 三峡地区地质灾害与生态环境湖北省协同创新中心(三峡大学) 宜昌443002

以Bi(NO_3)_3·5H_2O、NH_4H_2PO_4和稀土氧化物为原料,在乙二醇介质中采用溶剂热法制备了不同稀土元素(Ln=Sm、Pr、Tb)掺杂的Bi PO4光催化剂(记为Bi PO4-Ln,包含Bi PO4-Sm、Bi PO4-Pr和Bi PO_4-Tb)。通过X-射线衍射法(XRD)、扫描电子... 详细信息

以Bi(NO_3)_3·5H_2O、NH_4H_2PO_4和稀土氧化物为原料,在乙二醇介质中采用溶剂热法制备了不同稀土元素(Ln=Sm、Pr、Tb)掺杂的Bi PO4光催化剂(记为Bi PO4-Ln,包含Bi PO4-Sm、Bi PO4-Pr和Bi PO_4-Tb)。通过X-射线衍射法(XRD)、扫描电子显微镜(SEM)、X-射线光电子能谱(XPS)和紫外可见漫反射光谱(UV-Vis DRS)对制备的催化剂进行了表征。以染料罗丹明B(rhodamine B,Rh B)及小分子水杨酸(salicylic acid,SA)为目标化合物,研究了在可见光激发下(λ≥420 nm)Bi PO4-Ln对目标污染物的光催化降解特性,结果表明,Bi PO4-Ln相较纯Bi PO4,其光吸收范围从紫外光扩大到可见光区域,在3种Bi PO_4-Ln催化剂中,Bi PO4-Sm对Rh B的吸附能力最强且其光催化活性较强,通过测定其在可见光下降解Rh B过程中产生的活性物种,发现Bi PO4-Ln在氧化降解Rh B的过程中主要涉及到·OH及O-2·的氧化机理。

关键词： BiPO4 稀土掺杂光催化可见光

等离子体处理的Pd/BiOBr光催化剂及其光催化性能研究

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三峡大学学报（自然科学版） 2018年第5期40卷 97-102页

作者：李灵焦磊姚坤黄应平贾漫珂三峡大学生物与制药学院湖北宜昌443002 三峡地区地质灾害与生态环境湖北省协同创新中心(三峡大学) 湖北宜昌443002 三峡库区生态环境教育部工程研究中心(三峡大学) 湖北宜昌443002

以Bi(NO_3)_3·5H_2O和KBr为原料,采用水热合成法制备了BiOBr光催化剂.然后将制备好的BiOBr运用低温等离子体技术处理制备了Pd/BiOBr光催化剂.运用N_2-物理吸附脱附、X射线粉末衍射(XRD)、扫描电镜(SEM)对催化剂的结构和晶型进行了表征... 详细信息

以Bi(NO_3)_3·5H_2O和KBr为原料,采用水热合成法制备了BiOBr光催化剂.然后将制备好的BiOBr运用低温等离子体技术处理制备了Pd/BiOBr光催化剂.运用N_2-物理吸附脱附、X射线粉末衍射(XRD)、扫描电镜(SEM)对催化剂的结构和晶型进行了表征,利用光致发光(PL)谱、紫外可见漫反射吸收光谱(Uv-Vis DRS)技术和瞬时光电流谱对催化剂的光电特性进行了测定.并以染料罗丹明B(Rhodamine B,RhB)及无色小分子2,4-二氯苯酚(2,4-Dichlorophenol,2,4-DCP)为底物,在可见光(λ≥420nm)条件下考察了Pd/BiOBr的光催化降解性能,结果表明Pd/BiOBr催化剂较纯BiOBr光催化效果显著提升,在反应11h时对RhB矿化率达到70%.同时分析了BiOBr和Pd/BiOBr对RhB光催化降解过程中活性物种,表明BiOBr在降解过程中主要涉及O_2·^-氧化,Pd/BiOBr对RhB光催化降解过程中超氧和空穴同时起作用.

关键词： BiOBr 光催化 Pd等离子体

席夫碱铁-BiOBr复合催化剂及其可见光活化分子氧性能

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三峡大学学报（自然科学版） 2018年第4期40卷 92-98页

作者：付桂荣贾漫珂 Tirusew Araya 黄应平三峡大学生物与制药学院湖北宜昌443002 三峡大学三峡地区地质灾害与生态环境湖北省协同创新中心湖北宜昌443002 三峡大学三峡库区生态环境教育部工程研究中心湖北宜昌443002 三峡大学水利与环境学院湖北宜昌443002

采用化学合成法制备双(5-磺酸钠水杨醛)邻苯二胺席夫碱[N,N-Bis-schiff-base-5-sulfonate-salicylalidene-o-phenylenediamine sodium,SSPA]铁(III)配合物(FeSSPA),通过FeSSPA与无机铋盐醇解反应制备了FeSSPA-BiOBr复合光催化剂.采用UV-Vis DRS、XRD、SEM及FT-IR对FeSSPA-BiOBr光催化剂进行表征.在可见光照射下研究其对罗丹明B(Rhodamine B,RhB)和2,4-二氯苯酚(2,4-Dichlorophenol,2,4-DCP)的降解过程发现,经过复合后,FeSSPA-BiOBr能可见光活化分子氧催化降解底物,催化效果明显优于单独的FeSSPA及BiOBr催化剂,且单独的FeSSPA催化剂只能活化H2O2进行光催化降解.当复合量为50μmol FeSSPA/g BiOBr时,可见光活性最好,此时RhB光降解速率(k50μmol FeSSPA/g BiOBr=0.03min-1)约比单独的BiOBr高一倍(kBiOBr=0.016min-1).在pH=5.18时,反应60min后FeSSPA-BiOBr对RhB褪色率达到99%;3.5h后对小分子2,4-DCP降解率可达41%,降解中起主要作用的活性氧化物种为·OH.5次循环后催化剂仍具有良好的稳定性.FeSSPA复合BiOBr后能够夺取导带电子,降低其电子空穴对的复合率从而提高催化活性.

关键词：席夫碱铁 BiOBr 复合物活化分子氧光催化

不同表面活性剂存在下Ga_2O_3的水热合成及其光催化性能

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环境工程学报 2016年第5期10卷 2361-2366页

作者：向淼淼宋香华贾漫珂方艳芬陆朝阳黄应平三峡地区地质灾害与生态环境湖北省协同创新中心(三峡大学) 宜昌443002 三峡库区生态环境教育部工程研究中心(三峡大学) 宜昌443002 武汉千水环境工程技术有限公司武汉430074

以氯代十六烷基吡啶(CPC)、聚乙二醇6000(PEG6000)和十二烷基磺酸钠(SDS)为模板剂,采用水热法合成宽禁带Ga_2O_3纳米晶(Ga_2O_3CPC、Ga_2O_3PEG6000和Ga_2O_3SDS)。利用X射线衍射法(XRD)、扫描电镜(SEM)、紫外可见漫反射(UV-Vis DRS)、比表面积测定仪(BET)对催化剂晶相结构、形貌、比表面积以及其带隙进行了表征。其中Ga_2O_3CPC为单相α-Ga_2O_3,棒状形貌,Ga_2O_3PEG6000和Ga_2O_3SDS都为α和β相共存的多相Ga_2O_3。在紫外光(λ=254 nm)照射下,分别以罗丹明B(rhodamine B,Rh B)和水杨酸(salicylic acid,SA)为目标降解物,发现Ga_2O_3CPC活性最好,反应4 h Rh B基本降解完全,45min对SA的降解率达到94.92%。通过测定降解过程中产生的活性物种及Rh B降解过程中红外吸收光谱的变化,指出Ga_2O_3CPC对Rh B的深度氧化矿化过程是涉及·OH自由基的氧化历程。

关键词： Ga2O3 光催化氧化水热法表面活性剂氧化机理