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Rational design of graphyne-based dual-atom site catalysts for CO oxidation

Nano Research 2023年第1期16卷 343-351页

作者： Zhenwei Zhang Liang Zhang Xiaoyang Wang Yuan feng Xiangwen liu Wenming sun department of Chemistry Beijing Key Laboratory for Optical Materials and Photonic DevicesCapital Normal UniversityBeijing 100048China Linyi Vocational university of Science and technology(Linyi Institute of Industrial technology) Linyi 276000China Dassault Systemes(Shanghai)Information technology Co. Ltd.Shanghai 200120China Institute of Analysis and Testing Beijing Academy of Science and Technology(Beijing Center for Physical and Chemical Analysis)Beijing 100094China TianHe Supercomputing Center of Huaihai Linyi 276000China

There are increasing concerns about the environmental impact of rising atmospheric carbon monoxide concentrations,thus it is necessary to develop new catalysts for efficient CO *** on first-principles calculations,the potential ofγ-graphyne(GY)as substrate for metals in the 4th and 5th periods under single-atom and dual-atoms concentration modes has been systematically *** was found that single-atom Co,Ir,Rh,and Ru could effectively oxidate CO molecules,especially for single ***,proper atoms concentration could boost the CO oxidation activity by supplying more reaction centers,such as Rh^(2)/*** was determined that two Rh atoms in Rh^(2)/GY act different roles in the catalytic reaction:one structural and another *** tests suggest that substituting the structural Rh atom in the center of acetylenic ring by Co or Cu atom is a possible way to maintain the reaction performance while reducing the noble metal *** systemic investigation will help in understanding the fundamental reaction mechanisms on GY-based *** emphasize that properly exposed frontier orbital of functional metal atom is crucial in adsorption configuration as well as entire catalytic *** study constructs a workflow and provides valuable information for rational design of CO oxidation catalysts.

关键词： density functional theory calculations CO oxidation single-atom catalyst graphyne dual-atom site catalyst

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Performance of different macrophytes in the decontamination of and electricity generation from swine wastewater via an integrated constructed wetland-microbial fuel cell process

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Journal of environmental Sciences 2020年第3期32卷 252-263页

作者： feng liu Lei sun Jinbao Wan Liang Shen Yanhong Yu Lingling Hu Ying Zhou School of Resources environmental&chemical engineering Nanchang UniversityJiangxi 330031China School of Chemistry and chemical engineering Jiangxi Science and Technology Normal UniversityJiangxi 330013China Jiangxi engineering Laboratory of Waterborne Coating School of Chemistry and Chemical EngineeringJiangxi Science and Technology Normal UniversityJiangxi 330013China School of Materials and Mechanical&Electrical engineering Jiangxi Science and Technology Normal UniversityJiangxi 330013China

Plants constitute a major element of constructed wetlands(CWs).In this study,a coupled system comprising an integrated vertical flow CW(IVCW) and a microbial fuel cell(MFC) for swine wastewater tre atment was developed to research the effects of macrophytes commonly employed in CWs,Canna indica,Acorus calamus,and Ipomoea aquatica,on decontamination and electricity production in the *** of the different root types and amounts of oxygen released by the roots,the rates of chemical oxygen demand(COD) and ammonium nitrogen(NH4^+-N) removal from the swine wastewater differed as *** the unplanted,Canna indica,Acorus calamus,and Ipomoea aquatica systems,the COD removal rates were 80.20%,88.07%,84.70%,and 82.20%,respectively,and the NH4+-N removal rates were 49.96%,75.02%,70.25%,and 68.47%,*** decontamination capability of the Canna indica system was better than those of the other *** average output voltages were 520±42,715±20,660±27,and 752±26 mV for the unplanted,Canna indica,Acorus calamus,and Ipomoea aquatica systems,respectively,and the maximum power densities were 0.2230,0.4136,0.3614,and0.4964 W/m^3,*** aquatica had the largest effect on bioelectricity generation *** addition,electrochemically active bacteria,Geobacter and Desulfuromonas,were detected in the anodic biofilm by high-throughput sequencing analysis,and Comamonas(Proteobacteria),which is widely found in MFCs,was also detected in the anodic *** results confirmed the important role of plants in IVCW-MFCs.

关键词： Integrated vertical flow constructed wetland Microbial fuel cell Swine wastewater Dissolved oxygen(DO)

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Impact of hydrothermal process on the nutrient ingredients of restaurant garbage

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Journal of environmental Sciences 2006年第5期18卷 1012-1019页

作者： REN Lian-hai NIE Yong-feng liu Jian-guo JIN Yi-ying sun Lu department of environmental Science and engineering Tsinghua University Beijing 100084 China department of chemical and environmental engineering Beijing Technology and Business University Beijing 100037 China department of environmental engineering China Agricultural University Beijing 100094 China

In order to recover the nutrient resource from restaurant garbage, a complete trial with 2 factors on 5 levels of experiments was carried out. The temperature and heating time are the main factors influencing on hydrothermal process （HP） by which improves the degradability and digestibility of the restaurant garbage favorably to make animal feeds or fertilizer. The results showed the variation of protein, saccharide, and oil in the garbage. It showed that protein dissolved and liquefied during hydrothermal process, which made organic nitrogen in solid phase transfer to liquid phase. After heating at 180℃ for 60min, organic nitrogen in liquid phase began to transform into ammonia. It also showed that hydrothermal process could promote the dextrinization, dissolution of the starch and its hydrolysis to reducing sugar, due to that starch in the restaurant garbage decreases and reducing sugar increases. When the temperature reached 140℃, the reducing sugar started to decrease due to chemical reactions. The cellulose was stable at 100-180℃. The floatable oil increased markedly in the hydrothermal process. The suitable condition for de-oil was observed at 160℃ heating for 80 min. Furthermore, the extraction of grease from the solid phase accords with first-order reaction dynamic model.

关键词： restaurant garbage hydrothermal process protein saccharide lipid

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Treatment of phosphate-containing oily wastewater by coagulation and microfiltration

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Journal of environmental Sciences 2006年第4期18卷 629-633页

作者： ZHANG Jin sun Yu-xin HUANG Zhi-feng liu Xing-qin MENG Guang-yao department of Materials of Science and engineering University of Science and Technology of China Hefei 230026China School of Chemistry and chemical engineering Anhui University Hefei 230039 China National Key Laboratory of Transient Physics Nanjing 210094 China Great Wall New Century Membrane technology Corporation Hefei 230601 China

The oily wastewater generated from pretreatment unit of electrocoating industry contains oils, phosphate, organic solvents, and surfactants. In order to improve the removal efficiencies of phosphate and oils, to mitigate the membrane fouling, coagulation for ceramic membrane microfiltration of oily wastewater was performed. The results of filtration tests show that the membrane fouling decreased and the permeate flux and quality increased with coagulation as pretreatment. At the coagulant Ca （OH）2 dosage of 900 mg/L, the removal efficiency of phosphate was increased from 46.4% without coagulation to 99.6%; the removal of COD and oils were 97.0% and 99.8%, respectively. And the permeate flux was about 70% greater than that when Ca（OH）2 was not used. The permeate obtained from coagulation and microfiltration can be reused as make-up water, and the recommended operation conditions for pilot and industrial application are transmembrane pressure of 0.10 MPa and cross-flow velocity of 5 m/s. The comparison results show that 0.2 μm ZrO2 microfilter with coagulation could be used to perform the filtration rather than conventional ultrafilter, with very substantial gain in flux and removal efficiency of phosphate.

关键词： ceramic membrane crossflow microfiltration coagulation phosphate removal fouling mitigation phosphate-containing oily wastewater

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Improvement of synergistic effect photocatalytic/peroxymonosulfate activation for degradation of amoxicillin using carbon dots anchored on rod-like CoFe_(2)O_(4)

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Chinese Journal of chemical engineering 2022年第12期52卷 136-145页

作者： Weilong Shi Yanan liu Wei sun Yuanzhi Hong Xiangyu Li Xue Lin feng Guo Junyou Shi School of Material Science and engineering Beihua UniversityJilin 132013China School of Material Science and engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China college of Chemistry Zhengzhou UniversityZhengzhou 450001China

β-lactam antibiotics in aquatic environment have severely damaged ecological stability and caused a series of environmental pollution problems to be solved ***,a novel composite photocatalyst prepared by loading carbon dots(CDs)onto rod-like CoFe_(2)O_(4)(CFO),which can effectively degrade amoxicillin(AMX)by photocata lytic/peroxy mono sulfate(PMS)activation under visible light *** degradation results exhibits that the optimal degradation efficiency with 97.5%within 80 min is achievd by the CDs-CFO-5 *** enhanced activity is ascribed to the introduction of CDs that effectively improves the separation efficiency of photogenerated electron pairs and creates new active sites as electron bridges that improve the photocata lytic *** importantly,a strong synergistic between CDs and photo-induced electrons generated from CFO can further activiate PMS to provide more SO4-·and·OH radicals for boosting the degradation ability towards *** present study aims to elucidate positive role of CDs in photocata lytic/peroxy monosulfate activation during the degradation reaction.

关键词： Carbon dots(CDs) CoFe_(2)O_(4)(CFO) Peroxymonosulfate(PMS) Photocatalytic Amoxicillin(AMX)

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One-step synthesis of hierarchically porous hybrid TiO2 hollow spheres with high photocatalytic activity

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Frontiers of Materials Science 2016年第1期10卷 15-22页

作者： Ruiping liu feng REN Jinlin YANG Weiming SU Zhiming sun Lei ZHANG Chang-an WANG department of Materials Science and engineering China University of Mining & Technology (Beijing) Beijing 100083 China School of chemical & environmental engineering China University of Mining & Technology (Beijing) Beijing 100083 China department of Mechanical engineering PO Box 755905 University of Alaska Fairbanks Fairbanks AK 99775 USA School of Materials Science and engineering State Key Laboratory of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China

Hierarchically porous hybrid TiO2 hollow spheres were solvothermally synthesized successfully by using tetrabutyl titanate as titanium precursor and hydrated metal sulfates as soft templates. The as-prepared TiO2 spheres with hierarchically pore structures and high specific surface area and pore volume consisted of highly crystallized anatase TiO2 nanocrystals hybridized with a small amount of metal oxide from the hydrated sulfate. The proposed hydrated-sulfate assisted solvothermal （HAS） synthesis strategy was demonstrated to be widely applicable to various systems. Evaluation of the hybrid TiO2 hollow spheres for the photo-decomposition of methyl orange （MO） under visible-light irradiation revealed that they exhibited excellent photocatalytic activity and durability.

关键词： titania hybrid composite hollow spheres photocatalytic property

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Targeted Micellar Phthalocyanine for Lymph Node Metastasis Homing and Photothermal Therapy in an Orthotopic Colorectal Tumor Model

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Nano-Micro Letters 2021年第11期13卷 1-17页

作者： Hai‑Yi feng Yihang Yuan Yunpeng Zhang Hai‑Jun liu Xiao Dong Si‑cong Yang Xue‑Liang liu Xing Lai Mao‑Hua Zhu Jue Wang Qin Lu Quanjun Lin Hong‑Zhuan Chen Jonathan F.Lovell Peng sun Chao Fang Hongqiao International Institute of Medicine Tongren Hospital and State Key Laboratory of Oncogenes and Related GenesDepartment of Pharmacology and Chemical BiologyShanghai Jiao Tong University School of Medicine(SJTU-SM)Shanghai 200025People’s Republic of China department of General Surgery Tongren HospitalSJTU-SMShanghai 200336People’s Republic of China Institute of Interdisciplinary Integrative Biomedical Research Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghai 201203People’s Republic of China department of Biomedical engineering University at BuffaloState University of New YorkBuffaloNY 14260USA

Tumor lymph node(LN)metastasis seriously affects the treatment *** have shown that nanoparticles with size of sub-50 nm can directly penetrate into LN metastases after intravenous ***,we speculate through introducing targeting capacity,the nanoparticle accumulation in LN metastases would be further enhanced for improved local treatment such as photothermal *** micelles(<50 nm)were formulated using a unique surfactantstripping approach that yielded concentrated phthalocyanines with strong near-infrared *** micellar phthalocyanine(T-MP)was an effective photothermal transducer and ablated HT-29 cells in vitro.A HER2-expressing colorectal cancer cell line(HT-29)was used to establish an orthotopic mouse model that developed metastatic disease in mesenteric sentinel LN.T-MP accumulated more in the LN metastases compared to the micelles conjugated with control *** surgical resection of the primary tumor,minimally invasive photothermal treatment of the metastatic LN with T-MP,but not the control micelles,extended mouse *** findings demonstrate for the first time that targeted small-sized nanoparticles have potential to enable superior paradigms for dealing with LN metastases.

关键词： Lymph node metastasis Photothermal therapy Trastuzumab Phthalocyanine Micelles

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Multiresponsive Polymer Assemblies Achieved by a Subtle Chain Terminal Modification

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Chinese Journal of Chemistry 2014年第1期32卷 51-56页

作者： Weiwei liu Yucai Wang Yang Li feng Wang Xianzhu Yang Tianmeng sun Jinzhi Du Jun Wang Nano Science and technology Institute University of Science and Technology of China Suzhou Jiangsu 215123 China department of Polymer Science and engineering University of Science and Technology of China Hefei Anhui 230026 China CAS Key Laboratory of Brain Function and Disease and School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China School of Medical engineering Hefei University of Technology Hefei Anhui 230009 China Email: Xianzhu Yang (yangxz@***) Jun Wang (jwang699@***)[*]CAS Key Laboratory of Brain Function and Disease and School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China Tel.: 0086-0551-63600335 Fax: 0086-0551-63600402

Inspired by the influence of chemical structure of end groups on the phase transition temperature of thermoresponsive polymers,we demonstrated a strategy to control the multi-responsiveness of polymer assemblies via subtle modification of end groups of thermoresponsive polymer segments and revealed its potential application for drug *** developing polymer assemblies composed of poly(aliphatic ester) as the inner core and thermoresponsive polyphosphoester as the outer shell,we showed that end groups of thermoresponsive polyphosphoester segments controlled the surface property of assemblies and further determined the stimuli-responsive *** phase-transition temperatures of the unmodified polymer assemblies are tightly controlled by their surface properties due to the hydrophilic to hydrophobic transitions of end groups in response to an environmental stimulus (*** or light irradiation).External control over these surface properties can by asserted by adjusting the chemical structure and composition of the terminal groups of the thermoresponsive polyphosphoesters.

关键词： multi-responsive thermoresponsive phase-transition polyphosphoester

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Boron nitride for enhanced oxidative dehydrogenation of ethylbenzene

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Journal of Energy Chemistry 2021年第6期30卷 477-484,I0012页

作者： Rui Han Jiangyong Diao Sonu Kumar Andrey Lyalin Tetsuya Taketsugu Gilberto Casillas Christopher Richardson feng liu Chang Won Yoon Hongyang liu Xudong sun Zhenguo Huang Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) Northeastern UniversityShenyang 110819LiaoningChina School of Civil and environmental engineering University of Technology SydneyUltimoNew South Wales 2007Australia Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina Institute for chemical Reaction Design and Discovery(WPI-ICReDD) Hokkaido UniversitySapporo 001-0021Japan Center for Green Research on Energy and environmental Materials National Institute for Materials Science(NIMS)Tsukuba 305-0044Japan department of Chemistry Faculty of ScienceHokkaido UniversitySapporo 060-0810Japan Electron Microscopy Centre University of WollongongNew South Wales 2500Australia Molecular Horizons and School of Chemistry and Molecular Bioscience Faculty of ScienceMedicine and HealthUniversity of WollongongNew South Wales 2522Australia Center for Hydrogen and Fuel Cell Research Korea Institute of Science and TechnologySeoul 02792Republic of Korea

It is demonstrated experimentally and confirmed theoretically that highly defective boron nitride showed outstanding performance for oxidative dehydrogenation of *** catalyst is derived from carbon-doped hexagonal boron nitride nanosheets synthesized via a two-step reaction when participating the oxidative dehydrogenation *** first step yields a polymeric precursor with the atomic positions of B,C,N relatively constrained,which is conducive for the formation of carbon atomic clusters uniformly dispersed throughout the BN *** the oxidative dehydrogenation of ethylbenzene to styrene,the nanoscale carbon clusters are removed and highly defective boron nitride(D-BN)is obtained,exposing boron-rich zigzag edges of BN that act as the catalytic *** catalytic performance of D-BN is therefore remarkably better than un-doped *** results indicate that dispersed C-doping in h-BN is highly effective in terms of defect formation and resultant enhanced activity in oxidative dehydrogenation reactions.

关键词： Boron nitride Dehydrogenation Ethylbenzene Carbon-doping Heterogeneous catalysis

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The importance of H_(2) in the controlled growth of semiconducting single-wall carbon nanotubes

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Journal of Materials Science & technology 2020年第19期54卷 105-111页

作者： feng Zhang Jia sun Yonggang Zheng Peng-Xiang Hou Chang liu Min Cheng Xin Li Hui-Ming Cheng Zhen Chen Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and engineering University of Science and Technology of Chin1Shenyang 110016China International Research Center for Computational Mechanics State Key Laboratory of Structural Analysis for Industrial EquipmentDepartment of Engineering MechanicsFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024China Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen InstituteTsinghua UniversityShenzhen 518055China department of Civil and environmental engineering University of MissouriColumbi1MO 65211USA

H_(2) is considered an indispensable component of the atmosphere for the growth of high-quality singlewall carbon nanotubes(SWCNTs)by chemical vapor ***,details of the roles H_(2) playing are still unclear due to the complex conditions of SWCNT *** this study,we elucidate the functions of H_(2) in the selective growth of semiconducting SWCNTs(s-SWCNTs)by using monodispersed uniform Fe nanoparticles as a ***-quality s-SWCNTs were synthesized by finely tuning the concentration of H_(2) and the other growth *** data combined with atomistic simulations indicate that H_(2) not only adjusts the concentration of the carbon source,but also serves as a mild etchant that selectively removes small carbon caps grown by a perpendicular mode from the Fe *** results provide useful hints for the controlled growth of SWCNTs with a semiconducting or metallic conductivity,and even a specific chirality.

关键词： Single-wall carbon nanotubes Controlled growth Semiconducting Growth mode H_(2)

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