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Layered bismuth oxide/bismuth sulfide supported on carrageenan derived carbon for efficient carbon dioxide electroreduction to formate

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Chinese Journal of Chemical Engineering 2022年第3期35卷 116-123页

作者： Xiangzhao Hu Junjie Sun wanzhen zheng Sixing zheng Yu Xie Xiang Gao Bin Yang Zhongjian Li Lecheng Lei Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China Department of Material Chemistry Nanchang Hangkong UniversityNanchang 330063China School of Biological and Chemical Engineering Ningbo Technology UniversityNingbo 315100China

Electrochemical reduction of carbon dioxide(CO_(2)ER)into formate plays a crucial role in CO_(2)conversion and ***,it still faces the problems of high overpotential and poor catalytic ***,we report a hybrid CO_(2)ER electrocatalyst composed of layered bismuth sulfide(Bi_(2)S_(3))and bismuth oxide(Bi_(2)O_(3))supported on carrageenan derived carbon(Bi-CDC)prepared by a combined pyrolysis with hydrothermal *** such 3 D hybrid,layered Bi_(2)O_(3)and Bi_(2)S_(3)are uniformly grown on nanocarbon *** from strong synergistic effect between Bi_(2)O_(3)/Bi_(2)S_(3)and nanocarbon,Bi-CDC-1:2 displays a high Faradic efficiency(FE)of>80%for formate production in the range of-0.9 V to-1.1 V with the maximum formate FE of 85.6%and current density of 14.1 mA·cm^(-2) at-1.0 ***,a positive onset potential of-0.5 V,a low Tafel slope of 112.38 mV·dec^(-1),and a slight performance loss during long-term CO_(2)ER tests are observed on Bi-CDC-1:*** results shows that the better CO_(2)ER performance of Bi-CDC-1:2 than that of Bi_(2)O_(3)can be attributed to the strong interfacial interactions between nanocarbons and Bi_(2)O_(3)/Bi_(2)S_(3).In situ ATR-FTIR measurements reveal that the rate-determining step in the CO_(2)ER is the formation of HCOO^(*) *** with carbon support,Bi-CDC-1:2 can promote the production of HCOO^(*) intermediate and thus promoting CO_(2)ER kinetic.

关键词： Nanomaterials Catalyst Selectivity Bi_(2)S_(3)/Bi_(2)O_(3) CO_(2)electroreduction Formate

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Bi/Bi2O3 nanoparticles supported on N-doped reduced graphene oxide for highly efficient CO2 electroreduction to formate

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Chinese Chemical Letters 2020年第6期31卷 1415-1421,F0002页

作者： Junjie Sun wanzhen zheng Siliu Lyu Feng He Bin Yang Zhongjian Li Lecheng Lei Yang Hou College of Environment Zhejiang University of TechnologyHangzhou 310014China Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Ningbo Research Institute Zhejiang UniversityNingbo 315100China

Electrocatalytic CO2 reduction(CO2 ER)into formate is a desirable route to achieve efficient transformation of CO2 to value-added chemicals,however,it still suffers from limited catalytic activity and poor ***,we develop a hybrid electrocatalyst composed of bismuth and bismuth oxide nanoparticles(NPs)supported on nitrogen-doped reduced graphene oxide(Bi/Bi2 O3/NrGO)nanosheets prepared by a combined hydrothermal with calcination *** to the combination of undercoordinated sites and strong synergistic effect between Bi and Bi2 O3,Bi/Bi2 O3/NrGO-700 hybrid displays a promoted CO2 ER catalytic performance and selectivity for formate production,as featured by a small onset potential of-0.5 V,a high current density of-18 mA/cm2,the maximum Faradaic efficiency of85%at-0.9 V,and a low Tafel slope of 166 mV/*** results reveal that the higher CO2 ER performance of Bi/Bi2 O3/NrGO-700 than that of Bi NPs supported on NrGO(Bi/NrGO)can be due to the partial reduction of Bi2 O3 NPs into Bi,which significantly increases undercoordinated active sites on Bi NPs surface,thus boosting its CO2 ER ***,a two-electrode device with Ir/C anode and Bi/Bi2 O3/NrGO-700 cathode could be integrated with two alkaline batteries or a planar solar cell to achieve highly active water splitting and CO2 ER.

关键词： NrGO Bi/Bi2O3 CO2 electroreduction Formate Hybrid catalysts

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A Universal Principle to Accurately Synthesize Atomically Dispersed Metal–N_4 Sites for CO_2 Electroreduction

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Nano-Micro Letters 2020年第9期12卷 14-25页

作者： wanzhen zheng Feng Chen Qi Zeng Zhongjian Li Bin Yang Lecheng Lei Qinghua Zhang Feng He Xilin Wu Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China College of Geography and Environmental Science Zhejiang Normal UniversityJinhua 321004People’s Republic of China College of Environment Zhejiang University of TechnologyHangzhou 310014People’s Republic of China Institute of Zhejiang University-Quzhou Quzhou 324000People’s Republic of China Ningbo Research Institute Zhejiang UniversityNingbo 315100People’s Republic of China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Atomically dispersed metal-nitrogen sites-anchored carbon materials have been developed as effective catalysts for CO2 electroreduction(CO2 ER),but they still suffer from the imprecisely control of type and coordination number of N atoms bonded with central ***,we develop a family of single metal atom bonded by N atoms anchored on carbons(SAs-M-N-C,M=Fe,Co,Ni,Cu)for CO2 ER,which composed of accurate pyrrole-type M-N4 structures with isolated metal atom coordinated by four pyrrolic N *** from atomically coordinated environment and specific selectivity of M-N4 centers,SAs-Ni-N-C exhibits superior CO2 ER performance with onset potential of-0.3 V,CO Faradaic efficiency(F.E.) of 98.5%at-0.7 V,along with low Tafel slope of 115 mV dec-1 and superior stability of 50 h,exceeding all the previously reported M-N-C electrocatalysts for CO2-to-CO *** results manifest that the different intrinsic activities of M-N4 structures in SAs-M-N-C result in the corresponding sequence of Ni> Fe> Cu> Co for CO2 ER *** integrated Zn-CO2 battery with Zn foil and SAs-Ni-N-C is constructed to simultaneously achieve CO2-to-CO conversion and electric energy output,which delivers a peak power density of 1.4 mW cm-2 and maximum CO *** 93.3%.

关键词： Atomic dispersion Pyrrole-type metal–N4 structure Catalytic site CO2 electroreduction Zn–CO2 battery

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失落的细节

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上海艺术家 2014年第2期 53-55页

作者：郑菀蓁

摄影的细节，是一个古老又历久弥新的话题。半世纪之前，约翰·萨考夫斯基曾撰文来阐述他的“细节”观点。他强调，照片记录的细节如同线索，“被摄对象此前是没有被恰如其分地看待，它也许并不平凡琐碎，

关键词：失落话题强调

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Correction to: A Universal Principle to Accurately Synthesize Atomically Dispersed Metal-N4 Sites for CO2 Electroreduction

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Nano-Micro Letters 2020年第10期12卷 176-176页

作者： wanzhen zheng Feng Chen Qi Zeng Zhongjian Li Bin Yang Lecheng Lei Qinghua Zhang Feng He Xi‑Lin Wu Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China College of Geography and Environmental Science Zhejiang Normal UniversityJinhua 321004People’s Republic of China College of Environment Zhejiang University of TechnologyHangzhou 310014People’s Republic of China Institute of Zhejiang University-Quzhou Quzhou 324000People’s Republic of China Ningbo Research Institute Zhejiang UniversityNingbo 315100People’s Republic of China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

In the original publication,the author name was incorrectly published as Xilin *** correct author name should be Xi-Lin Wu,which is provided in this *** Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use,sharing,adaptation,distribution and reproduction in any medium or format,as long as you give appropriate credit to the original author(s)and the source,provide a link to the Creative Commons licence,and indicate if changes were *** images or other third party material in this article are included in the article’s Creative Commons licence,unless indicated otherwise in a credit line to the material.

关键词： Creative Open app

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生活垃圾焚烧炉渣覆盖层对Cr(Ⅵ)在填埋场中迁移的影响

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科技通报 2018年第5期34卷 236-239页

作者：詹婷婷邱战洪郑婉珍姚俊台州学院环境工程系台州学院建筑工程学院浙江大学环境与资源学院

通过473 d的模拟填埋场试验,研究了生活垃圾焚烧炉渣覆盖层对Cr(Ⅵ)在填埋场中迁移的影响。研究结果表明,生活垃圾焚烧炉渣覆盖层对Cr(Ⅵ)迁移的影响随着填埋进程而变化。在填埋场运行1~27 d,生活垃圾焚烧炉渣覆盖层截留了渗滤液中的Cr(... 详细信息

通过473 d的模拟填埋场试验,研究了生活垃圾焚烧炉渣覆盖层对Cr(Ⅵ)在填埋场中迁移的影响。研究结果表明,生活垃圾焚烧炉渣覆盖层对Cr(Ⅵ)迁移的影响随着填埋进程而变化。在填埋场运行1~27 d,生活垃圾焚烧炉渣覆盖层截留了渗滤液中的Cr(Ⅵ),这可能是生活垃圾焚烧炉渣对Cr(Ⅵ)的吸附作用所致。第34~97 d,生活垃圾焚烧炉渣中Cr(Ⅵ)溶出量大于吸附量,导致渗滤液中Cr(Ⅵ)浓度增加。第112~473 d,覆盖层对Cr(Ⅵ)又产生截留作用,表明生活垃圾焚烧炉渣对Cr(Ⅵ)的吸附重新占据主导作用。

关键词：填埋场生活垃圾焚烧炉渣覆盖层 Cr(Ⅵ) 迁移

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深圳市医疗专项债加速发行对公立医院的影响及应对措施

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中国卫生经济 2023年第11期42卷 69-72,91页

作者：蒋理添吴洁琪伍丽群王安妮曾华堂郑婉真深圳市卫生健康发展研究和数据管理中心广东深圳518028 大连医科大学公共卫生学院辽宁大连116044 中国医科大学公共卫生学院沈阳110000

目的:探讨医疗专项债的加速发行对公立医院的影响,助力医疗机构用足用好医疗专项债,促进公立医院高质量发展。方法:采用定量和定性相结合的方式,对深圳市医疗专项债发行情况及特点进行分析,同时结合利益相关者分析法、专家访谈来探讨医... 详细信息

目的:探讨医疗专项债的加速发行对公立医院的影响,助力医疗机构用足用好医疗专项债,促进公立医院高质量发展。方法:采用定量和定性相结合的方式,对深圳市医疗专项债发行情况及特点进行分析,同时结合利益相关者分析法、专家访谈来探讨医疗专项债对公立医院的影响并提出政策建议。结果:2018—2022年期间深圳市发行的医疗专项债辐射各个辖区、期数逐年增加、发行规模快速增长,医疗专项债发行占比高。调研结果显示,医疗专项债的发行对公立医院是把双刃剑,一方面可迅速解决公立医院发展资金需求,推动医疗卫生事业的发展,另一方面也会增加公立医院的运营压力。结论:主管部门和公立医院要不断配合,积极完善医疗专项债的发行和使用制度,促进公立医院高质量发展。

关键词：医疗专项债公立医院影响应对措施

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营养教育联合口服营养补充对结直肠癌化疗患者临床结局的影响

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中国临床保健杂志 2020年第2期23卷 223-225页

作者：高留节邵婷婷郑婉珍丁纪元浙江杭州市肿瘤医院中医综合肿瘤科 310000

目的评估营养教育联合口服补充肿瘤全营养制剂对结直肠癌化疗患者营养状况和临床结局的影响。方法选取90例能口服食物且营养风险筛查2002(NRS2002)≥3分的结直肠癌化疗患者,按照随机数字表分为研究组(n=45,营养教育联合口服补充肿瘤全... 详细信息

目的评估营养教育联合口服补充肿瘤全营养制剂对结直肠癌化疗患者营养状况和临床结局的影响。方法选取90例能口服食物且营养风险筛查2002(NRS2002)≥3分的结直肠癌化疗患者,按照随机数字表分为研究组(n=45,营养教育联合口服补充肿瘤全营养制剂)和对照组(n=45,营养教育),比较化疗前后两组患者的能量补充、营养情况、化疗不良反应发生率等。结果化疗前后比较,研究组每天口服营养能量总量显著增加[(7726±709)kJ比(7447±715)kJ,P<0.05];研究组患者白蛋白和前白蛋白水平显著升高[(37.80±2.87)g/L比(39.67±2.03)g/L,P<0.05;(252.98±50.35)mg/L比(283.47±32.96)mg/L,P<0.05]。另外,与对照组比较,研究组患者三级骨髓抑制和三级消化道反应发生率显著下降(17.8%比40.0%,P=0.02;15.6%比42.2%,P=0.005)。结论营养教育联合口服营养补充可改善结直肠癌化疗患者的营养状况,降低化疗相关副反应的发生率,改善了临床结局。

关键词：结直肠肿瘤药物疗法营养状况肠道营养健康教育

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ASRNet: Adversarial Segmentation and Registration Networks for Multispectral Fundus Images

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Computer Systems Science & Engineering 2021年第3期36卷 537-549页

作者： Yanyun Jiang Yuanjie zheng Xiaodan Sui wanzhen Jiao Yunlong He Weikuan Jia School of Information Science and Engineering Shandong Normal UniversityJinan250358China Key Laboratory of Intelligent Computing&Information Security in Universities of Shandong Shandong Provincial Key Laboratory for Novel Distributed Computer Software TechnologyInstitute of Biomedical SciencesShandong Normal UniversityJinan250358China Shandong Provincial Hospital Affiliated to Shandong University Jinan250021China INSA Lyon University of LyonCNRSInsermVilleurbanne69621CedexFrance

Multispectral imaging (MSI) technique is often used to capture imagesof the fundus by illuminating it with different wavelengths of light. However,these images are taken at different points in time such that eyeball movementscan cause misalignment between consecutive images. The multispectral imagesequence reveals important information in the form of retinal and choroidal bloodvessel maps, which can help ophthalmologists to analyze the morphology of theseblood vessels in detail. This in turn can lead to a high diagnostic accuracy of several diseases. In this paper, we propose a novel semi-supervised end-to-end deeplearning framework called “Adversarial Segmentation and Registration Nets”(ASRNet) for the simultaneous estimation of the blood vessel segmentation andthe registration of multispectral images via an adversarial learning process. ASRNet consists of two subnetworks: (i) A segmentation module S that fulfills theblood vessel segmentation task, and (ii) A registration module R that estimatesthe spatial correspondence of an image pair. Based on the segmention-drivenregistration network, we train the segmentation network using a semi-supervisedadversarial learning strategy. Our experimental results show that the proposedASRNet can achieve state-of-the-art accuracy in segmentation and registrationtasks performed with real MSI datasets.

关键词： Deep learning deformable image registration image segmentation multispectral imaging(MSI)

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间接酶联免疫吸附试验快速检测无毒唐菖蒲试管苗

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微生物学报 1985年第4期 329-333页

作者：蔡文启赵淑珍奚仲兴徐绍华莽克强郑万珍何传启中国科学院微生物研究所中国科学院遗传研究所

本文利用间接酶联免疫吸附试验检测了从北京地区栽种的唐菖蒲上分离到的一株病毒的提纯制品和唐菖蒲试管苗的病叶粗提液。用提纯的病毒免疫家兔,抗血清的滴度为1:62500。提纯病毒的最适包被浓度为2.5μg/ml。能检测提纯病毒的最低浓度为... 详细信息

本文利用间接酶联免疫吸附试验检测了从北京地区栽种的唐菖蒲上分离到的一株病毒的提纯制品和唐菖蒲试管苗的病叶粗提液。用提纯的病毒免疫家兔,抗血清的滴度为1:62500。提纯病毒的最适包被浓度为2.5μg/ml。能检测提纯病毒的最低浓度为4ng/ml。侵染性试验检测提纯病毒的最低浓度为30ng/ml。在间接酶联免疫吸附试验中,该病毒与烟草叶病毒普通株有血清学相关性。

关键词：间接酶联免疫吸附试验无毒唐菖蒲试管苗

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