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SSRN 2024年

作者： Huang, Hao Zhao, Jinrong Pan, Zhiguang Wang, Tianqi Yu, Hui Li, Feng Dong, Xiangting Liu, Zelun Yang, Ying School of Chemistry and Environmental Engineering Key Laboratory of Applied Chemistry and Nanotechnology University of Jilin Province Changchun University of Science and Technology Changchun130022 China Affiliated Middle School with Jilin University Changchun130022 China

Metal semiconductor oxides (MOSs) derived from metal-organic frameworks (MOFs) possess unique internal structure that offer great potential for development in the sensing fields. In this study, we synthesized reduced graphene oxide (rGO) doped nanocubic CuO with Cu(Ⅱ)-BTC as a sacrificial template. The rGO/CuO-10 flexible sensor exhibits 30-fold improvement in response to 10 ppm H2S at room temperature (RT) compared to pure CuO and theoretical detection limit down to 10 ppb. The sensor also maintains good stability when bent at different angles. The response enhancement can be owed to the composition of p-p heterostructure between rGO and CuO, the two-dimensional layered structure of rGO and the special morphology of CuO. Consequently, this study provides insights into preparation of flexible sensors based on MOFs-derived MOSs to detect H2S at RT. © 2024, The Authors. All rights reserved.

关键词： Copper oxides

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Indications of superconductivities in blend of variant apatite and covellite

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arXiv 2024年

作者： Wang, Hongyang Zhao, Yijing Wu, Hao Wang, Ling Wu, Zhixing Geng, Zhihui Xiao, Jiewen Xue, Weiwei Ye, Shufeng Chen, Ning Qiao, Xianfeng Yao, Yao State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100049 China Independent researcher China School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food safety College of Chemistry Fuzhou University Fuzhou350108 China Graduate School of Engineering Tokai University Hiratsuka2591292 Japan College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei230027 China School of Materials Science and Engineering University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou510640 China Department of Physics South China University of Technology Guangzhou510640 China

Through heavily doping sulfur into an apatite framework, we synthesize a new blend mainly comprising variant apatite and covellite (copper sulfide). Magnetic measurement exhibits that significant diamagnetism appears at around 260 K and drops dramatically below 30 K implying coexistence of two superconducting phases. The upper critical magnetic field is larger than 1000 Oe at 250 K. Electric measurement manifests that the current-voltage curves deviate from the normal linear lineshape suggesting the presence of zero-resistance effect, and the critical current is around 50 µA at 140 K. These exotic magnetic and electric features strongly indicate these two components, variant apatite and covellite, individually trigger two superconducting phases at near-room and low temperatures. Copyright © 2024, The Authors. All rights reserved.

关键词： Copper compounds

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Tuning the strength of built-in electric field in 2D/2D g-C_(3)N_(4)/MS_(2) and g-C_(3)N_(4)/ZrS_(2) S-scheme heterojunctions by nonmetal doping

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Journal of Materiomics 2021年第5期7卷 988-997页

作者： Bicheng Zhu Haiyan Tan Jiajie Fan Bei Cheng Jiaguo Yu Wingkei Ho State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi RoadWuhan430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China Department of Science and Environmental Studies The Education University of Hong KongTai PoN.T.Hong Kong999077China

Single photocatalysts usually exhibit unsatisfactory performance due to the serious recombination of photogenerated electron‒hole *** two photocatalysts to construct S-scheme heterojunction could solve this *** S-scheme mechanism,the interfacial built-in electric field(IEF)provides a vital driving force for efficient charge *** the IEF is a feasible strategy to further improve the photocatalytic ***,a novel idea of tuning the strength of IEF in 2D/2D graphitic carbon nitride(g-C_(3)N_(4))/MS2(M=Sn,Zr)S-scheme heterojunctions by nonmetal doping was developed by employing density functional theory *** nonmetal elements(O,P,and S)were severally introduced into g-C_(3)N_(4)/MS_(2) *** density difference suggested that O and S doping led to increased interfacial electron transfer,while P doping had minimal *** expected,the calculated field strength of O-and S-doped g-C_(3)N_(4)/MS_(2) composites was significantly larger than that of pristine and P-doped g-C_(3)N_(4)/MS_(2) ***,O and S doping endowed g-C_(3)N_(4)/MS_(2) Sscheme heterojunctions with enhanced IEF and more thorough charge ***,the experimentally synthesized O-C_(3)N_(4)/ZrS_(2) composite exhibited better photocatalytic H2-production activity than g-C_(3)N_(4)/ZrS_(2) *** work proposed an original idea of employing proper nonmetal doping to magnify the advantage of S-scheme heterojunction in accelerating charge separation.

关键词： Graphitic carbon nitride Density functional theory Field strength Photocatalysis Van der Waals heterostructure

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Insights into electrochemical oxidation of tris(2-butoxyethyl) phosphate (TBOEP) in aquatic media: Degradation performance, mechanisms and toxicity changes of intermediate products

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Chemosphere 2023年 343卷 140267页

作者： Luo, Zhujun Huang, Wantang Yu, Wenyan Tang, Shaoyu Wei, Kun Yu, Yuanyuan Xu, Lei Yin, Hua Niu, Junfeng Research Center for Eco-Environmental Engineering School of Environment and Civil Engineering Dongguan University of Technology Dongguan523808 China China Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters School of Environment and Energy South China University of Technology Guangdong Guangzhou510006 China College of Environmental Science and Engineering North China Electric Power University Beijing102206 China

Tris (2-butoxyethyl) phosphate (TBOEP) has gained significant attention due to its widespread presence and potential toxicity in the environment. In this study, the degradation of TBOEP in aquatic media was investigated using electrochemical oxidation technology. The anode Ti/SnO2–Sb/La–PbO2 demonstrated effective degradation performance, with a reaction constant (k) of 0.6927 min−1 and energy consumption of 1.24 kW h/m3 at 10 mA/cm2. CV tests, EPR tests, and quenching experiments confirmed that indirect degradation is the main degradation mechanism and ·OH radicals were the predominant reactive species, accounting for up to 93.8%. The presence of various factors, including Cl−, NO3−, HCO3− and humic acid (HA), inhibited the degradation of TBOEP, with the inhibitory effect dependent on the concentrations. A total of 13 intermediates were identified using UPLC-Orbitrap-MS/MS, and subsequent reactions led to their further degradation. Two main degradation pathways involving bond breaking, hydroxylation, and oxidation were proposed. Both Flow cytometry and the ECOSAR predictive model indicated that the intermediates exhibited lower toxic than the parent compound, resulting in a high detoxification rate of 95.9% for TBOEP. Although the impact of TBOEP on the phylum-level microbial community composition was found to be insignificant, substantial alterations in bacterial abundance were noted when examining the genus level. The dominant genus Methylotenera, representing 17.4% in the control group, decreased to 6.9% in the presence of TBOEP and slightly increased to 8.7% in the 4-min exposure group of degradation products. Electrochemical oxidation demonstrated its effectiveness for the degradation and detoxification of TBOEP in aqueous solutions, while it is essential to consider the potential impact of degradation products on sediment microbial communities. © 2023 Elsevier Ltd

关键词： Electrochemical oxidation

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Coupling highly reactive RuP2 with amorphous WP for boosting alkaline hydrogen evolution

SSRN

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SSRN 2024年

作者： Wang, Jing Zhou, Yingshuang Ji, Xing Wang, Zhenzhen Fang, Zefeng Lu, Bin Guo, Junjie Wei, Zhongzhe Institute of Advanced Magnetic Materials College of Materials & Environmental Engineering Hangzhou Dianzi University Hangzhou310018 China Key laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan030024 China Institute of Industrial Catalysis College of Chemical Engineering Zhejiang University of Technology Hangzhou310032 China

Electrochemical water splitting stands out as an environmentally benign approach for generating green H2 through the harnessing of intermittent energy derived from renewable sources. However, the slow water dissociation kinetics hinders the commercialization for water-alkali electrolyzer. In this study, we synthesize a novel porous nanocomposite (RuP2/WP/PNC3-A) combined with RuP2 and amorphous WP by a facile and eco-friendly strategy. Detailed research results demonstrate that biomass-derived phytic acid not only promotes the formation of active metal phosphides, but also serves as a pore-forming agent to assist in the constructing a hierarchical porous structure, significantly enhancing the mass and electron transfer capability. Particularly noteworthy is that WP prevents the aggregation of RuP2. During the post-treatment process more protected RuP2 components are released and meanwhile leads to the conversion of WP from crystalline to amorphous. Benefitting from the applicable H adsorption ability of RuP2 and the enhanced H2O adsorption, dissociation capacity by amorphous WP, RuP2/WP/PNC3-A exhibits astonishing hydrogen evolution reaction (HER) performance, requiring an exceedingly low overpotential (only 24 mV) under 10 mA cm-2, featuring small Tafel slope (64.6 mV dec-1), and demonstrating excellent durability. © 2024, The Authors. All rights reserved.

关键词： Phosphorus compounds

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Hollow CoP/carbon as an efficient catalyst for the peroxymonosulfate activation derived from phytic acid assisted metal-organic framework

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Chemosphere 2024年 355卷 141775页

作者： Khan, Muhammad Abdul Nasir Klu, Prosper Kwame Xiao, Chengming Qi, Junwen Noor, Tayyaba Sheikh, Zeshan Kalwar, Kaleemullah Li, Jiansheng Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Islamabad44000 Pakistan Department of Agricultural Engineering Ho Technical University P.O. Box HP217 Ho Ghana

The catalyst's composition and rationally designed structure is significantly interlinked with its performance for wastewater remediation. Here, a novel hollow cobalt phosphides/carbon (HCoP/C) as an efficient catalyst for activating peroxymonosulfate (PMS) was prepared. The ZIF-67 was synthesized first, followed by phytic acid (PA) etching and then heat treatment was used to get HCoP/C. The PA was used as an etching agent and a source of phosphorus to prepare HCoP/C. To analyze catalytic performance, another solid cobalt phosphides/carbon (SCoP/C) catalyst was prepared for comparison. In contrast to SCoP/C, the HCoP/C exhibited higher catalytic efficiency when used to activate PMS to degrade Bisphenol A (BPA). The results showed that about 98 % of targeted pollutant BPA was removed from the system in 6 min with a rate constant of 0.78 min−1, which was 4 times higher than the solid structure catalyst. The higher catalytic performance of HCoP/C is attributed to its hollow structure. In the study, other parameters such as BPA concentration, temperature, pH, and different catalyst amount were also tested. Moreover, the electron paramagnetic resonance (EPR) and radical quenching analysis confirmed that sulfate radicals were dominant in the HCoP/C/PMS system. © 2024 Elsevier Ltd

关键词： Cobalt compounds

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Long-Term Exposure of Triclocarban to the Performance of Partial Nitrification Process: Its Fate and Microbial Dynamics

SSRN

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SSRN 2024年

作者： Yan, Jingying Zhong, Dinglei Li, Junjie Miao, Hengfeng Yang, Kunlun Gu, Peng Ren, Xueli Xiong, Jianglei Zhang, Zengshuai School of Environmental and Ecology Jiangnan University Wuxi214122 China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan University Wuxi214122 China Jiangsu Engineering Laboratory of Biomass Energy and Carbon Reduction Technology Jiangnan University Wuxi214122 China Water Treatment Technology and Material Innovation Center Suzhou University of Science and Technology Suzhou215009 China China Electronics Innovation Environmental Technology Co. Ltd Wuxi214111 China

Triclocarban (TCC), as an antibacterial agent, is widely used in personal care products. Large amount of TCC utilization led to its frequent detection in sewage. The present study aimed to investigate the effect of TCC on the partial nitrification (PN) process and its interaction with nitrifiers via the nitrite accumulation, TCC degradation path, and microbial community response at long-term exposure. The results showed that the accumulation of NO2-N was observed after a long period of operation. Interestingly, the concentration of NO3-N was also decreased. Moreover, long-term exposure of TCC increased the activity of ammonia monooxygenase (AMO) and increased the secretion of extracellular polymeric substances (EPS) to resist the toxicity of TCC. Mass balance analysis showed that the biodegradation efficiency of TCC adsorbed in sludge increased from 4.30% to 70.57%. Meanwhile, abundance of AOB with long-term exposure of TCC increased, while abundance of NOB decreased. In addition, the abundance of TCC degrading bacteria (i.e., Sphingomonas) also increased. This indicated that TCC inhibited NOB and enriched TCC-degrading bacteria. This work contributed to a better understanding of the effects of TCC on wastewater treatment systems, which provided a basis for the comprehensive management of TCC in the future. © 2024, The Authors. All rights reserved.

关键词： Sewage

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Transient Electromagnetic Simulation for Periodic Structures with a Modified Parallel DGTD Method

Transient Electromagnetic Simulation for Periodic Structures...

引用

IEEE International Wireless Symposium (IWS)

作者： Chunyu Li Zhou Dai Tiancheng Zhang Huaguang Bao Yinghui Zhou Zheng Sun Dazhi Ding Nanjing University of Science and Technology Nanjing China Nanjing Electronic Devices Institute Nanjing China National Key Laboratory on Electromagnetic Environmental Effects and Electro-optical Engineering Army Engineering University Nanjing China

Due to natural block diagonal mass matrices, discontinuous Galerkin time domain (DGTD) method provides convenient condition for parallel computation. However, when the number of processes increases, the traffic between processes gradually increases, leading to the sharp decline of the parallelism efficiency. To solve these problems, non-blocking communication technology with the math kernel library (MKL) scheme is proposed to improve the efficiency of message passing interface (MPI) parallel computing. Thus, a typical periodic electromagnetic structure - frequency selective surface (FSS) is simulated, which achieves an acceleration ratio of more than 1.8 times, and further improves the performance of the DGTD algorithm.

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Fast Pyrolysis of Biomass with Diverse Properties to Produce Liquid Hydrogen Storage Molecules

SSRN

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SSRN 2024年

作者： Xie, Wensheng Zhang, Yutao Zhang, Yeshui Liu, Chuanqun Wang, Yinxiang Xie, Yuanbo Ji, Guozhao Li, Aimin Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and Technology Dalian University of Technology Dalian116000 China Zhejiang Province Key Laboratory of Soil Contamination Bioremediation School of Environment and Resources Zhejiang Agriculture and Forestry University Hangzhou311300 China School of Engineering University of Aberdeen AberdeenAB24 3UE United Kingdom Co. Ltd. Dalian116033 China

Liquid organic hydrogen carriers (LOHCs), such as methanol and formic acid, offer a reliable solution for the challenges associated with transporting and storing gaseous hydrogen. However, the current industrial LOHCs are costly and in limited supply due to complex synthesis methods involving gasification and Fischer-Tropsch synthesis. An alternative approach utilizing efficient pyrolysis methods can convert biomass into substances that mimic LOHCs, making them a promising avenue for hydrogen storage. Compounds with a high hydrogen content, including glycolaldehyde, acetic acid, and acetol, hold potential as effective LOHCs. This study seeks to assess how the specific properties of biomass impact the resulting products and target molecules, focusing on identifying the primary sources of LOHCs compounds. The experimental results indicate that glycolaldehyde primarily originates from cellulose, while acetic acid and acetol are mainly derived from hemicellulose. At a pyrolysis temperature of 500 ºC and a particle size of 0.38-0.83mm, corn cob yields a higher quantity of glycolaldehyde, acetic acid, and acetol (107 mg/g) compared to rice husks (85.6 mg/g) and pine (68.9 mg/g) due to its significant cellulose and hemicellulose content. It is notable that the primary sources of these hydrogen storage molecules during pyrolysis are the initial biomass pyrolysis products rather than from secondary reactions. © 2024, The Authors. All rights reserved.

关键词： Biomass

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Impacts of salicylic acid on the morpho-physiological and biochemical characteristics of Ceratonia siliqua L. vitroseedlings under salt stress

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Vegetos 2024年 1-11页

作者： Youssara, Ichraka Tabi, Salma Manssoury, Najat El Aissam, Salama Koufan, Meriyem Natural Resources and Local Products Research Unit Regional Center of Agricultural Research of Agadir National Institute of Agricultural Research Avenue Ennasr Rabat Morocco Center of Agrobiotechnology and bioengineering CNRST Labeled Research Unit (Center AgroBiotech-URL- CNRST-05) Sciences and Technologies Faculty Cadi Ayyad University Marrakesh Morocco Environmental Ecological and Agro-Industrial Engineering Laboratory Department of Life Sciences Faculty of Science and Technology Sultan Moulay Slimane University Beni-Mellal Morocco

Salinity has emerged as a significant global challenge, severely limiting the productivity of agricultural crops. This problem has been further exacerbated by climate change, which amplifies its impact. Unfortunately, the carob tree (Ceratonia siliqua), despite its importance in the Mediterranean region, its often cultivated on saline soils, which can negatively affect its productivity. Currently, various approaches are being explored to mitigate the detrimental effects of salinity on plants. Among the most recommended solutions is the use of phytohormones such as salicylic acid. Salicylic acid is an endogenous growth hormone known for its ability to enhance plant resistance to various types of abiotic stress. Furthermore, its effect has already been tested on several species. The aim of this study is to evaluate the response of Ceratonia siliqua vitroplants, derived from seedlings, to salt stress (80 mM, 240 mM) in the presence of salicylic acid (0.5 mM). The results indicated that salt stress led to an increased latency period, a 50% reduction in germination rate, and diminished growth and leaf area incarob vitroseedlings. Additionally, it caused disruption of photosynthesis. Salt stress also affected the levels of osmoprotectants by increasing their synthesis, such as proline, soluble sugars, and glycine-betaine. It also affected the content of polyphenols and the antioxidant activity of the plant. The introduction of salicylic acid in the presence of high stress (240 mM) led to a decrease in the latency period of vitroseedlings by 1 day. Furthermore, it increased the germination rate from 50 to 66.67%. As for other morphological parameters, a slight decrease in aerial part and root length, internode spacing, and leaf area was observed. Concerning the biochemical parameters, the application of salicylic acid under high-stress conditions resulted in a reduction of glycine-betaine and soluble sugar content, decreasing from 0.28 to 0.22 mg·g-1 DM and from 1.89 to 1.

关键词： Carob tree (Ceratonia siliqua) In vitro Salicylic acid (SA) Salt stress Seedlings

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