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Pd-MnO_2 nanoparticles/TiO_2 nanotube arrays(NTAs) photo-electrodes photo-catalytic properties and their ability of degrading Rhodamine B under visible light

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Journal of Environmental Sciences 2017年第10期29卷 53-60页

作者： Mohamed Thabit huiling liu Jian Zhang Bing Wang State Key Laboratory of Urban Water Resource and Environment School of Municipal and Environmental EngineeringHarbin Institute of Technology School of Chemical Engineering Northeast Electric Power University

Pd-MnO2/TiO2 nanotube arrays（NTAs） photo-electrodes were successfully fabricated via anodization and electro deposition subsequently; the obtained Pd-MnO2/TiO2 NTAs photo electrodes were analyzed by scanning electron microscopy（SEM）, X-ray diffraction（XRD） and characterized accordingly. Moreover, the light harvesting and absorption properties were investigated via ultraviolet–visible diffuse reflectance spectrum（DRS）; photo degradation efficiency was investigated via analyzing the photo catalytic degradation of Rhodamine B under visible illumination（xenon light）. The performed analyses illustrated that Pd-MnO2 codoped particles were successfully deposited onto the surface of the TiO2 nanotube arrays;DRS results showed significant improvement in visible light absorption which was between400 and 700 nm. Finally, the photo catalytic degradation efficiency results of the designated organic pollutant（Rhodamine B） illustrated a superior photocatalytic（PC） efficiency of approximately 95% compared to the bare TiO2 NTAs, which only exhibited a photo catalytic degradation efficiency of approximately 61%, thus it indicated the significant enhancement of the light absorption properties of fabricated photo electrodes and their yield of UOH radicals.

关键词： Pd-MnO2/TiO2 Nanotubes Photo electrode Photo degradation Rhodamine B Photo-catalytic efficiency

Improvement of sludge dewaterability with modified cinder via affecting EPS

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Frontiers of Environmental Science & Engineering 2017年第6期11卷 179-192页

作者： Weichao Ma Lei Zhao huiling liu Qianliang liu Jun Ma State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150090 China School of Architectural Engineering Heilongiiang University Harbin 150080 China Key Laboratory of Structures Dynamic Behavior and Control of the Ministry of Education Harbin Institute of Technology Harbin 150090 China Key Laboratory of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology Harbin Institute of Technology Harbin 150090 China

The relationship between the improvement of sludge dewaterability and variation of organic matters has been studied in the process of sludge pre-conditioning with modified cinder, especially for extracellular polymeric substances （EPS） in the sludge. During the conditioning process, the decreases of total organic carbon （TOC） and soluble chemical oxygen demand （SCOD） were obviously in the supernatant especially for the acid modified cinder （ACMC）, which could be attributed to the processes of adsorption and sweeping. The reduction of polysaccharide and protein in supernatant indicated that ACMC might adsorb EPS so that the tightly bound EPS （TB-EPS） decreased in sludge. In the case of ACMC addition with 24 g·L^-1, SRF of the sludge decreased from 7.85 × 10^12 m·kg^-1 to 2.06× 10^12 m·kg^-1, and the filter cake moisture decreased from 85% to 60%. The reconstruction of ＂floc mass＂ was confirmed as the main sludge conditioning mechanism. ACMC promoted the dewatering performance through the charge neutralization and adsorption bridging with the negative EPS, and provided firm and dense structure for sludge floc as skeleton builder. The passages for water quick transmitting were built to avoid collapsing during the high-pressure process.

关键词： Sludge conditioning Acid or alkali modified cinder TB-EPS Floc mass Floc reconstruction

Photocatalytic degradation of Rhodamine B under visible light with Nd-doped titanium dioxide films

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Journal of Rare Earths 2009年第5期27卷 739-743页

作者： WU Xiaohong SU Peibo liu huiling QI Lili State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Applied ChemistryHarbin Institute of Technology Harbin 150001 China School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150001 China School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150001 China

Microporous titanium dioxide films were prepared by the sol-gel methods on glass substrates, using tetrabutyl titanate as source material. In order to absorb the visible light and increase the photocatalytic activities, different concentrations of neodymium ions (Nd/Ti molar ratio was 0.5%, 0.7%, 0.9%, and 1.1% respectively) were added into the sol. X-ray diffraction (XRD), X-ray photoelectron spectros-copy (XPS), and atom force microscopy (AFM) were applied to characterize the modified films. A kind of typical textile industry pollutant (Rhodamine B) was used to evaluate the photocatalytic activities of the films under visible light. The results showed that the activities of the films were improved by doping Nd ions into the sol.

关键词： titanium dioxide visible light doping ion photocatalysis Rhodamine B rare earths

V-doped Ni_(3)N/Ni heterostructure with engineered interfaces as a bifunctional hydrogen electrocatalyst in alkaline solution:Simultaneously improving water dissociation and hydrogen adsorption

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Nano Research 2021年第10期14卷 3489-3496页

作者： Huan Zhang Juan Wang Fengqi Qin huiling liu Cheng Wang Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials and Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

Alkali-water electrolyzers and hydroxide exchange membrane fuel cells are emerging as promising technologies to realize hydrogen *** cost-effective electrode materials with high activities towards corresponding hydrogen evolution(HER)and oxidation(HOR)reactions plays a crucial role in commercial hydrogen production and ***,we fabricated a V-doped Ni_(3)N/Ni heterostructure(V-Ni_(3)N/Ni)through a controlled nitridation treatment on a V-incorporated nickel hydroxide *** resultant catalyst exhibits comparable catalytic activity and durability to commercial Pt/C in terms of both HER(a low overpotential of 44 mV at the current density of 10 mA·cm^(-2))and HOR(a high current density of 1.54 mA·cm^(-2)at 0.1 V versus reversible hydrogen electrode)under alkaline *** superior activity of V-Ni_(3)N/Ni grown on different substrates further implies its intrinsic *** functional theory(DFT)calculations reveal that the coupled metallic Ni and doped V can promote the water adsorption,accelerate the Volmer step of alkaline HER,as well as optimize the adsorption and desorption of hydrogen intermediate(H^(*))to reach a balancedΔGH*value.

关键词： interface engineering doping water dissociation hydrogen adsorption alkaline hydrogen electrocatalysis

Biodegradation pathway and mechanism of tri (2-chloropropyl) phosphate by Providencia rettgeri

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Journal of Environmental Sciences 2024年第10期144卷 26-34页

作者： Jinming Ye Shaoyu Tang Rongliang Qiu Shuona Chen huiling liu College of Natural Resources and Environment of South China Agricultural University Guangzhou 510642China Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety Guangzhou 510642China Research Center for Eco-Environmental Engineering Dongguan University of TechnologyDongguan 523808China

Tri(2-chloropropyl)phosphate(TCPP)was an emerging contaminant of global concern because of its frequent occurrence,potential toxic effects,and persistence in the *** degradation might be an efficient and safe removal method,but limited information was *** this study,Providencia rettgeri was isolated from contaminated sediment and showed it could use TCPP as unique phosphorus source to promote growth,and decompose 34.7%of TCPP(1 mg/L)within 5 *** microbial inoculation and the initial concentration of TCPP could affect the biodegradation *** study results indicated that TCPP decomposition by Providencia rettgeri was mainly via phosphoester bond hydrolysis,evidenced by the production of bis(2-chloropropyl)phosphate(C_(6)H_(13)Cl_(2)PO_(4))and mono-chloropropyl phosphate(C_(3)H_(8)ClPO_(4)).Both intracellular and extracellular enzymes could degrade TCPP,but intracellular degradation was dominant in the later reaction stage,and the presence of Cu^(2+) ions had a promoting *** findings developed novel insights into the potential mechanism of TCPP microbial degradation.

关键词： Chlorinated organophosphate flame retardants Microbial degradation Degradation pathway Providencia rettgeri Tri(2-chloropropyl)phosphate

Suitable lithium polysulfides diffusion and adsorption on CNTs@TiO_(2)-bronze nanosheets surface for high-performance lithium-sulfur batteries

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Nano Research 2022年第2期15卷 933-941页

作者： Mengmeng Zhen Keliang Jiang Sheng-Qi Guo Boxiong Shen huiling liu Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental EngineeringHebei University oj TechnologyTianjin 300401China Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy Institute for New Energy Materials&Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300071China

The shuttle effect of lithium polysulfides(UPSs)in lithium-sulfur batteries(LSBs)has been hampered their *** oxides as separator modifications can suppress the shuttle *** there is no direct electron transport between metal oxides and UPSs,absorbed UPSs should be diffused from the surface of metal oxides to the carbon matrix to go through redox *** diffusivity of UPSs from metal oxides surface to carbon substrate is poor,it would hinder the redox reactions of ***,researchers tend to focus on the adsorption and overlook the diffusion of ***,same morphology and different crystal phase of TiO_(2) nanosheets grown on carbon nanotubes(CNTs@TiO_(2)-bronze and CNTs@TiO_(2)-anatase)have been designed via a simple *** with CNTs and CNTs@TiO_(2)-anatase composites,the battery with CNTs@TiO_(2)-bronze modified separator delivers higher specific capacities and stronger cycling stability,especially at high current rates(~472 mAh·g^(-1) at 2.0 C after 1,000 cycles).Adsorption tests,density functional theory calculations and electrochemical performance evaluations indicate that suitable diffusion and adsorption for LiPSs on the CNTs@TiO_(2)-B surface can effectively capture LiPSs and promote the redox reaction,leading to the superior cycling performances.

关键词： lithium polysulfides Li ion diffusion adsorption TiO_(2)-bronze surface long-term cycling performances

Nimodipine alleviates apoptosis-mediated impairments through the mitochondrial pathway after spinal cord injury

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Current Zoology 2011年第3期57卷 340-349页

作者： Yafei CAI Rui FAN Tianmiao HUA huiling liu Jing LI College of Life Sciences Anhui Normal University Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province Wuhu 241000 Anhui China Center for Molecular Recognition Columbia University New York NY 10032 Spice and Beverage Crops Research Institute Chinese Academy of Tropical Agricultural Sciences Wanning 571533 Hainan China

Abstract Spinal cord injury （SCI） remains an unsolved human health challenge. To alleviate the impairments of SCI, we studied the therapeutic effect of nimodipine （an L-type Ca^2＋ channel antagonist） on functional recovery from SCI using Nystrom＇s method in a mouse model. Eighty-four mice were divided into three groups： control group in which only vertebral plates were cut off without causing any spinal injuries; SCI; and SCI with nimodipine treatment. We assessed the histopathology, apoptosis detection, cell cycle, mitochondrial transmembrane potential, bcl-2/bax and caspase-3 levels of tissue 8 h, 1 d, 3 d and 4 d after trauma to evaluate rehabilitation. Behavioral performances were also assessed before and after nimodipine treatment. Results from inclined plane tests, motor score assessment and histological observations indicated that mice in the nimodipine-treated group rehabilitated better than those in the SCI group. The ratio of apoptosis, caspase-3 and bax expression in the nimodip- ine-treated group were significantly lower than those in the SCI group. The mitochondrial membrane potential and bcl-2 expression were up-regulated in the nimodipine-treated group. Taken together, our results indicate that the inhibition of calcium flux by nimodipine could reduce apoptosis processes and tissue damage through a mitochondrial pathway after spinal cord trauma [Current Zoology 57 （3）： 340-349, 2011].

关键词： Nimodipine Mitochondrial-pathway Alleviation Spinal cord injury Apoptosis

Investigating spatio-temporal characteristics and influencing factors for green energy consumption in China

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Geoscience Frontiers 2024年第3期15卷 221-236页

作者： Xiaowei Ma Shimei Weng Jun Zhao huiling liu Hongyun Huang School of Finance Anhui University of Finance and EconomicsBengbu 233030PR China Hefei Advanced Research Institute Anhui University of Finance and EconomicsHefei 230041PR China School of Mathematics and Statistics Fujian Normal UniversityFuzhou 350117PR China School of Economics and Management Beijing University of Chemical TechnologyBeijing 100029PR China School of Economics Hefei University of TechnologyHefei 230601PR China Qingdao Institute of Humanities and Social Sciences Shandong UniversityQingdao 266237PR China Center for Yellow River Ecosystem Products Shandong UniversityQingdao 266237PR China

The green transformation of energy consumption is beneficial for promoting green development in *** study constructed a green energy consumption evaluation index system and measured the green energy consumption levels in 30 provinces of China from 2000 to 2019 using the fuzzy comprehensive evaluation *** study further employed the spatial Durbin model to examine influencing factors and spillover effects of green energy *** results showed that,temporally,China’s green energy consumption levels had a fluctuating upward ***,spatially,the overall levels of green energy consumption in China showed apparent characteristics of“high in the west and low in the east”.In terms of influencing factors,environmental regulations played an important role in promoting green energy consumption in the region,while economic development,opening up,and industrial structure had considerably inhibiting ***,economic development,opening up,and industrial structure of neighboring regions showed marked positive spillover effects,while urbanization level and technological innovation showed substantial negative spillover *** regional heterogeneity test results showed that environmental regulation and industrial structure rationalization were the important factors for promoting green energy consumption in the eastern region,environmental regulation played an important driving role in the central region,and opening to the outside world and technological innovation helped improve the level of green energy consumption in the western region.

关键词： Energy green consumption Spatial and temporal characteristics Influencing factors Spatial Durbin model Regional heterogeneity

Food nutrition and toxicology targeting on specific organs in the era of single-cell sequencing

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Food Science and Human Wellness 2024年第1期13卷 75-89页

作者： Xiaofei Wang Xiaowen Cheng huiling liu Xiaohuan Mu Hao Zheng National Engineering Technology Research Center for Fruit and Vegetable Processing Key Open Laboratory of Fruit and Vegetable ProcessingMinistry of Agriculture and Rural AffairsBeijing Key Laboratory of Food Non-Thermal ProcessingCollege of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China

Due to the complex natures of dietary food components,it is difficult to elucidate how the compounds affect host *** food often selectively presents its mechanism of action on different cell types,and participates in the modulation of targeted cells and their microenvironments within ***,the limitations of traditional in vitro assays or in vivo animal experiments cannot comprehensively examine cellular heterogeneity and the tissue-biased ***-cell RNA sequencing(sc RNA-seq)has emerged as an indispensable methodology to decompose tissues into different cell types for the demonstration of transcriptional profiles of individual *** RNA-seq applications has been summarized on three typical organs(brain,liver,kidney),and two representative immune-and tumor related health *** everincreasing role of sc RNA-seq in dietary food research with further improvement can provide sub-cellular information and the coupling between other cellular *** this review,we propose utilizing sc RNAseq to more effectively capture the subtle and complex effects of food chemicals,and how they may lead to health problems at single-cell *** novel technique will be valuable to elucidate the underlying mechanism of both the health benefits of food nutrients and the detrimental consequences food toxicants at the cellular level.

关键词： Dietary food Cellular heterogeneity Single-cell RNA sequencing Food nutrients Food toxicants