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Enhanced photocatalytic CO_(2) hydrogenation with wide-spectrum utilization over black TiO_(2) supported catalyst

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Chinese Chemical Letters 2022年第2期33卷 812-816页

作者： Binbin jin Xin Ye Heng Zhong fangming jin Yun Hang Hu School of Environmental Science and Engineering State Key Lab of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China Center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Department of Materials Science and Engineering Michigan Technological UniversityHoughtonMichigan 49931-1295United States

Light-driven conversion of CO_(2)into chemicals/fuels is a desirable approach for achieving carbon neutral-ity using clean and sustainable ***,its scale-up application is restricted due to insufficient ***,we present a photothermal catalytic hydrogenation of CO_(2)into CH_(4)over Ru/black TiO_(2) catalysts,aiming to achieve the synergistic use of light and heat in solar energy during CO_(2)*** to the desirable spectral response ability and photothermal conversion performance of black TiO_(2),an efficient combination of photocatalysis and thermocatalysis has been *** CO_(2)hydrogena-tion was signiﬁcantly accelerated because of the increased catalyst surface temperature enabled by the photothermal effect of black TiO_(2).Simultaneously,through the in situ X-ray photoelectron spectroscopy(XPS)observation,electron-rich Ru nanoparticles was achieved based on the photo-induced excitation,thereby providing more negative hydride to improve nucleophilic attack to the CO_(2),obtaining the CH_(4) yield of 93.8%.

关键词： Photothermal Black TiO_(2) CO_(2) Electron-rich Hydrogenation

Catalytic transfer hydrogenation of levulinate ester intoγ-valerolactone over ternary Cu/ZnO/Al2O3 catalyst

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Journal of Energy Chemistry 2019年第5期28卷 189-197页

作者： Chuntao Zhang Zhibao Huo Dezhang Ren Zhiyuan Song Yunjie Liu fangming jin Wanning Zhou School of Environmental Science and Engineering Shanghai Jiao Tong University800 Dongchuan RoadMinhang districtShanghai 200240China College of Marine Ecology and Environment Shanghai Ocean University999 Huchenghuan RdNanhui New CityShanghai 201306China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

An effective catalytic transfer hydrogenation (CTH) process of bio-based levulinate esters into γ-valerolactone (GVL) was explored over ternary Cu/ZnO/Al2O3 catalyst which was prepared by coprecipitation method and could be sustainably used. As a result, quantitative conversion of ethyl levulinate (EL) and 99.0% yield of GVL were obtained in the CTH process using i-PrOH as hydrogen donor. The Cu/ZnO/Al2O3 catalyst with high-surface-area could be reused at least four times without the loss of catalytic activity. Furthermore, the structure and properties of Cu/ZnO/Al2O3 catalyst was characterized through XRD, BET, SEM, TEM and H2-TPR. Also, the influence of different support oxides and calcination temperatures was investigated.

关键词： Bio-based compounds Cu/ZnO/Al2O3 Transfer hydrogenation γ-valerolactone Green process

Revealing the GHG reduction potential of emerging biomass-based CO_(2) utilization with an iron cycle system

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Frontiers of Environmental Science & Engineering 2023年第10期17卷 119-131页

作者： jing Xu Jiong Cheng Runtian He Jiaqi Lu Chunling Wang Heng Zhong fangming jin School of Environmental Science and Engineering State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China Innovation Centre for Environment and Resources Shanghai University of Engineering ScienceShanghai 201620China Center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

CO_(2) utilization becomes a promising solution for reducing anthropogenic greenhouse gas (GHG) emissions. Biomass-based CO_(2) utilization (BCU) even has the potential to generate negative emissions, but the corresponding quantitative evaluation is limited. Herein, the biomass-based CO_(2) utilization with an iron cycle (BCU-Fe) system, which converts CO_(2) into formate by Fe under hydrothermal conditions and recovers Fe with biomass-derived glycerin, was investigated. The GHG reduction potential under various process designs was quantified by a multidisciplinary method, including experiments, simulations, and an ex-ante life-cycle assessment. The results reveal that the BCU-Fe system could bring considerable GHG emission reduction. Significantly, the lowest value is −34.03 kg CO_(2)-eq/kg absorbed CO_(2) (−2.44 kg CO_(2)-eq/kg circulated Fe) with the optimal yield of formate (66%) and Fe (80%). The proposed ex-ante evaluation approach not only reveals the benefits of mitigating climate change by applying the BCU-Fe system, but also serves as a generic tool to guide the industrialization of emerging carbon-neutral technologies.

关键词： Carbon dioxide utilization Hydrothermal reactions Biomass-based CO_(2)reduction Simulation Ex-ante LCA

Organic carbon accumulation capability of two typical tidal wetland soils in Chongming Dongtan,China

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Journal of Environmental Sciences 2011年第1期23卷 87-94页

作者： Shiping Zhang Lei Wang Jiajun Hu Wenquan Zhang Xiaohua Fu Yiquan Le fangming jin College of Environmental Science and Engineering of Tongji University State Key Laboratory of Pollution Control and Resources Reuse Tongji University Shanghai 200092 China

We measured organic carbon input and content of soil in two wetland areas of Chongming Dongtan （Yangtze River Estuary） to evaluate variability in organic carbon accumulation capability in different wetland soils. Observed differences were investigated based on the microbial activity and environmental factors of the soil at the two sites. Results showed that the organic carbon content of wetland soil vegetated with Phragmites australis （site A） was markedly lower than that with P. australis and Spartina alterniflora （site B）. Sites differences were due to higher microbial activity at site A, which led to higher soil respiration intensity and greater carbon outputs. This indicated that the capability of organic carbon accumulation of the site B soils was greater than at site A. In addition, petroleum pollution and soil salinity were different in the two wetland soils. After bio-remediation, the soil petroleum pollution at site B was reduced to a similar level of site A. However, the culturable microbial biomass and enzyme activity in the remediated soils were also lower than at site A. These results indicated that greater petroleum pollution at site B did not markedly inhibit soil microbial activity. Therefore, differences in vegetation type and soil salinity were the primary factors responsible for the variation in microbial activity, organic carbon output and organic carbon accumulation capability between site A and site B.

关键词： Chongming Dongtan organic carbon accumulation wetland soil microbial activity

Selective scission of glucose molecule by a Pd-modulated Co-based catalyst for efficient CO_(2)reduction under mild conditions

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Science Bulletin 2024年第19期69卷 3055-3065页

作者： Peidong Zhu Jiacong Li Yang Yang Heng Zhong fangming jin School of Environmental Science and Engineering State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China Shanghai Key Laboratory of Hydrogen Science&Center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Combining terrestrial biomass as the reductant with submarine-type hydrothermal environments for CO_(2)reduction represents a possible approach for novel energy production systems that sustainably circulate ***,increasing the reductive power of biomass is the main limitation of this potential ***,we demonstrate that Co-doped with small amounts of Pd enhances the reduction of CO_(2)by selectively producing an active intermediate from *** catalytic reaction utilized glucose as a reductant to achieve high formate production efficiency(458.6 g kg^(-1))with nearly 100%selectivity with 7.5 wt%Pd1Co_(20)/γ–Al_(2)O_(3)at a moderate temperature of 225℃.The regulation of the electronic structure of the catalytic Co surface by the dopant Pd plays a key role in promoting the C–C bond cleavage of glucose and hydrogen transfer for CO_(2)*** findings presented here indicate that biomass can serve as the hydrogen source for CO_(2)reduction and provide insight into the potential utilization of CO_(2)in sustainable industrial applications.

关键词： Pd-Co catalyst CO_(2) Reduction Glucose Formate

Universally improving effect of mixed electron donors on the CO_2 fixing efficiency of non-photosynthetic microbial communities from marine environments

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Journal of Environmental Sciences 2014年第8期26卷 1709-1716页

作者： Jiajun Hu Lei Wang Shiping Zhang Yuanqing Wang fangming jin Xiaohua Fu Huirong Li School of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji University Low-Carbon Conversion Science and Engineering Center Shanghai Advanced Research InstituteChinese Academy of Sciences School of Environmental Science and Engineering Shanghai Jiao Tong University Polar Research Institute of China

The universality of improved CO2 fixing upon the addition of mixed electron donors（MEDs）composed of Na2 S,NO2-,and S2O32-to non-photosynthetic microbial communities（NPMCs）obtained from 12 locations in four oceans of the world was validated. The CO2 fixing efficiencies of NPMCs were universally enhanced by MED compared with those obtained using H2 alone as electron donor,with average increase of about 276%. An increase in microbial inoculation concentration could increase the net amount of CO2 fixing to853.34 mg/L in the presence of MED. NO2-and S2O32-may play the roles of both electron acceptor and electron donor under aerobic conditions,which may improve the energy utilization efficiency of NPMC and enhance the CO2 fixation efficiency. The sequence determination of 16 S ribosomal deoxyribonucleic acid（rDNA） from 150 bacteria of NPMC showed that more than 50% of the bacteria were symbiotic and there were many heterotrophic bacteria such as Vibrio natriegens. These results indicate that NPMC acts as a symbiotic CO2 fixing system. The interaction between autotrophic and heterotrophic bacteria may be a crucial factor supporting ladder utilization and recycling of energy/carbon source.

关键词： Non-photosynthetic microbial community Mixed electron donors CO2fixing Symbiotic bacteria Heterotrophic bacteria

Photocatalytic reduction of carbon dioxide by titanium oxide- based semiconductors to produce fuels

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Frontiers in Energy 2019年第2期13卷 207-220页

作者： Xi CHEN fangming jin China-UK Low Carbon College Shanghai Jiao Tong University Shanghai 201306China School of Environmental Science and Engineering State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China

To tackle the crisis of global warming, it is imperative to control and mitigate the atmospheric carbon dioxide level. Photocatalytic reduction of carbon dioxide into solar fuels furnishes a gratifying solution to utilize and reduce carbon dioxide emission and simultaneously generate renewable energy to sustain the societies. So far, titanium oxide-based semiconductors have been the most prevalently adopted catalysts in carbon dioxide photoreduction. This mini-review provides a general summary of the recent progresses in titanium oxide- catalyzed photocatalytic reduction of carbon dioxide. It first illustrates the use of structural engineering as a strategy to adjust and improve the catalytic performances. Then, it describes the introduction of one/two exogenous elements to modify the photocatalytic activity and/or selectivity. Lastly, it discusses multi-component hybrid titanium oxide composites.

关键词： photocatalysis carbon dioxide reduction semiconductors titanium oxide renewable fuels

Catalytic conversion of ethyl lactate to 1,2-propanediol over CuO

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Chinese Journal of Chemical Engineering 2016年第1期24卷 126-131页

作者： Song Zhang Zhibao Huo Dezhang Ren Jiang Luo Jun Fu Lu Li fangming jin School of Environmental Science and Engineering The State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

An efficient conversion of biomass-derived ethyl lactate to 1,2-propanediol(1,2-PDO) over CuO was *** the catalysts we tested, CuO, Cu2 O and Co showed excellent catalytic activity for the conversion of ethyl lactate to 1,2-PDO in water, and CuO was more active and gave the best result. The 1,2-PDO yield of 93.6% was achieved when Zn acted as a reductant. The results indicated that in situ formed hydrogen by the oxidation of Zn in water is more effective than gaseous hydrogen, which failed to produce the 1,2-PDO from ethyl *** a practical point of view, the present method may provide a useful route for the production of 1,2-PDO from ethyl lactate.

关键词： Biomass 1 2-propanediol Ethyl lactate CuO Hydrothermal reactions

Highly-efficient and autocatalytic reduction of NaHCO_3 into formate by in situ hydrogen from water splitting with metal/metal oxide redox cycle

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Journal of Energy Chemistry 2017年第5期26卷 881-890页

作者： Guodong Yao Jia Duo Binbin jin Heng Zhong Lingyun Lyu Zhuang Ma fangming jin School of Environmental Science and Engineering State Key Lab of Metal Matrix Composites Shanghai Jiao Tong University Research Institute for Chemical Process Technology National Institute of Advanced Industrial Science and Technology (AIST) Graduate School of Environmental Studies Tohoku University

The Earth’s sustainable development is threatened by the increasing atmospheric COlevel which can be attributed to the imbalance of COdue to the rapid consumption of fossil fuels caused by human activities and the slow absorption and conversion of COby nature. One of the efficient methods for reconstructing the balance of COshould involve the rapid conversion of COinto fuels and *** hydrogenation of COwith gaseous hydrogen is currently considered to be the most commercially feasible synthetic route, however, the supply of safe and economical hydrogen sources poses a significant challenge to up-scaling application. Direct utilization of hydrogen from dissociation of water, the most abundant, cheap and clean hydrogen resource, for the reduction of COwould be one of the most promising approaches for COutilization. This paper provides an overview of the current advances in research on highly efficient reduction of COor NaHCO, a representative compound of CO, into formic acid/formate by in situ hydrogen from water dissociation with a metal/metal oxide redox cycle under mild hydrothermal conditions.

关键词： CO2 reduction Formate Water splitting Metal/metal oxide cycle Hydrothermal conversion