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Single-atom photo-catalysts:Synthesis,characteriz.tion,and applications

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Nano Materials Science 2024年第3期6卷 284-304页

作者： Siqi Li z.wang Kan He Wang Jiax.ao Bai Yunyi liu Song liu Yingjie Wu College of Chemistry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040China School of Medicine and Health Harbin Institute of TechnologyHarbin150001China

Single-atom catalysts(SACs)are gaining popularity in catalytic reactions due to their nearly 100%atomic utiliz.tion and defined active sites,which provide great convenience for studying the catalytic mechanism of ***,SACs still present challenges such as complex.formation processes,low loading and easy agglomeration of ***,we systematically discuss the synthesis methods for SACs,including coprecipitation,impregnation,atomic layer deposition,pyrolysis and Anti-Ostwald ripening *** techniques for characteriz.ng single-atom catalysts(SACs)are described in *** utiliz.tion of individual atoms in various photocatalytic reactions and their mechanisms of action in different reactions are *** purpose of this review is to introduce single-atom synthesis methods,characteriz.tion techniques,specific catalytic action and their applications in the direction of photocatalysis,and to provide a reference for the industrializ.tion of photocatalytic single-atoms,which is currently impossible,in the hope of promoting further development of photocatalytic single-atoms.

关键词： Photocatalysis Single atom Catalytic mechanism

Progress on the program of Si-compatible two-dimensional semiconductor materials and devices

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Science China(Information Sciences) 2024年第6期67卷 152-171页

作者： Mingsheng x. Yuwei WANG Jiwei liu Deren YANG College of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor MaterialsZhejiang University School of Materials Science and Engineering State Key Laboratory of Silicon and Advanced Semiconductor MaterialsZhejiang University

Two-dimensional(2D) materials are at the forefront of innovation, heralding a new era for nex.generation electronics and optoelectronics. These materials are distinguished by their unique structural characteristics: they have no hanging bonds on their surface, ex.ibit weakened electrostatic shielding in the z.direction, and boast atomic thickness in their monolayers. These features have led to groundbreaking discoveries in electrical, optical, and magnetic properties, paving the way for advancements in low-power electronics, valleytronics, infrared detectors, and memory devices. Despite these promising developments,Si-based technologies continue to dominate the landscape of nex.-generation electronics and optoelectronics,as well as heterogeneous integration. In response to this ongoing evolution, the National Natural Science Foundation of China(NSFC) initiated a major program in 2021 dubbed “Si-compatible two-dimensional semiconductor materials and devices”. This study reviews the progress made under the NSFC Program,spotlighting its main achievements and outlining key future research directions. Additionally, it sheds light on the challenges that researchers in the 2D domain face, particularly in developing Si-compatible 2D technologies.

关键词： two-dimensional materials Si-based CMOS technologies electronics and optoelectronics heterogeneous integration low-power

Non-perturbative dynamics of flat-band systems with correlated disorder

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Chinese Physics B 2024年第9期33卷 547-551页

作者： Qi Li Junfeng liu Ke liu z.-x.ang Hu z.ou Li GBA Branch of Aerospace Information Research Institute Chinese Academy of SciencesGuangzhou 510535China Guangdong Provincial Key Laboratory of Terahertz.Quantum Electromagnetics Guangzhou 510700China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006China Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics Chongqing UniversityChongqing 401331China University of Chinese Academy of Sciences Beijing 100039China

We develop a numerical method for the time evolution of Gaussian wave packets on flat-band lattices in the presence of correlated *** achieve this,we introduce a method to generate random on-site energies with prescribed *** verify this method with a one-dimensional(1D)cross-stitch model,and find good agreement with analytical results obtained from the disorder-dressed evolution *** allows us to reproduce previous findings,that disorder can mobiliz. 1D flat-band states which would otherwise remain *** ex.lained by the corresponding disorder-dressed evolution equations,such mobiliz.tion requires an asymmetric disorder-induced coupling to dispersive bands,a condition that is generically not fulfilled when the flat-band is resonant with the dispersive bands at a Dirac point-like *** ex.mplify this with the 1D Lieb *** analytical ex.ressions are not available for the two-dimensional(2D)system due to its complex.ty,we ex.end the numerical method to the 2D a–T3 model,and find that the initial flat-band wave packet preserves its localiz.tion when a=0,regardless of disorder and ***,when a̸=0,the wave packet shifts in real *** interpret this as a Berry phase controlled,disorder-induced wave-packet *** addition,we present density functional theory calculations of candidate materials,specifically Hg1−*** flat-band emerges near the G point(α=0)in the Brillouin z.ne.

关键词： flat-band system dynamics correlated disorder

A functionaliz.d activated carbon adsorbent prepared from waste amidox.me resin by modifying with H_(3)PO_(4) and z.Cl_(2) and its ex.ellent Cr(Ⅵ)adsorption

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 585-598页

作者： Chunlin He Yun liu Mingwei Qi z.nz.ang liu Yuez.ou Wei Toyohisa Fujita Guifang Wang Shaojian Ma Wenchao Yang School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China School of Nuclear Science and Technology University of South ChinaHengyang 421000China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of New Low-carbon Green Chemical Technology Education Department of Guangxi Zhuang Autonomous RegionNanning 530004China

With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, thereby endangering human health. Therefore, in this paper, a novel functionaliz.d mesoporous adsorbent PPR-z.was synthesiz.d from waste amidox.me resin for adsorbing Cr(Ⅵ). The waste amidox.me resin was first modified with H3PO4 and z.Cl_(2), and subsequently, it was carboniz.d through slow thermal decomposition. The static adsorption of PPR-z.conforms to the pseudo-second-order kinetic model and Langmuir isotherm, indicating that the Cr(Ⅵ) adsorption by PPR-z.is mostly chemical adsorption and ex.ibits single-layer adsorption. The saturated adsorption capacity of the adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the tox.city of Cr(Ⅵ) during adsorption. PPR-z.ex.ibited Cr(Ⅵ) selectivity in electroplating wastewater. The main mechanisms involved in the Cr(Ⅵ) adsorption are the chemical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-z.not only solves the problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realiz.s the concept of “treating waste with waste”.

关键词： waste amidox.me resin mesoporous adsorbent H_(3)PO_(4)and z.Cl_(2)processing Cr(VI)adsorption electroplating wastewater

A novel electro-Fenton hybrid system for enhancing the interception of volatile organic compounds in membrane distillation desalination

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Journal of Environmental Sciences 2024年第4期138卷 189-199页

作者： Hongx.n liu Kuiling Li Kunpeng Wang z.iyong Wang z.mou liu Sichao z.u Dan Qu Yu z.ang Jun Wang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua UniversityBeijing 100084China School of Chemical and Environmental Engineering Beijing CampusChina University of Mining and TechnologyBeijing 100083China Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China

Membrane distillation(MD)is a promising alternative desalination technology,but the hydrophobic membrane cannot intercept volatile organic compounds(VOCs),resulting in aggravation in the quality of *** term of this,electro-Fenton(EF)was coupled with sweeping gas membrane distillation(SGMD)in a more efficient way to construct an advanced ox.dation barrier at the gas-liquid interface,so that the VOCs could be trapped in this layer to guarantee the water quality of the *** the so-called EF-MD process,an interfacial interception barrier containing hydrox.l radical formed on the hydrophobic membrane *** contributed to the high phenol rejection of 90.2% with the permeate phenol concentration lower than 1.50 mg/*** interceptions can be achieved in a wide temperature range,even though the permeate flux.of phenol was also *** EF-MD system was robust to high salinity and could electrochemically regenerate ferrous ions,which endowed the long-term stability of the *** novel EF-MD configuration proposed a valuable strategy to intercept VOCs in MD and will broaden the application of MD in hypersaline wastewater treatment.

关键词： Membrane distillation VOC interception Interfacial ox.dation Electro-Fenton Hypersaline wastewater

High-efficiency ultrasonic assisted drilling of CFRP/Ti stacks under non-separation type and dry conditions

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Journal of z.ejiang University-Science A(Applied Physics & Engineering) 2024年第4期25卷 275-291页

作者： Enz. YING z.hua z.OU Dax. GENG z.enyu SHAO z.efei SUN Yihang liu Lianx.ng liu x.nggang JIANG Deyuan z.ANG School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Beijing Chenjing Electronics Company Limited Beijing 100015China Aerospace Times Feihong Technology Company Limited Beijing 100094China

In this study,to address the low efficiency for conventional ultrasonic-assisted drlling(UAD)of carbon fiber-reinforced plastic and titanium alloy(CFRP/Ti)stacks,feasibility ex.eriments of non-separation UAD,in which continuous cutting between the tool and the workpiece occurs at a high feed rate,are carried *** ex.erimental results indicate that,compared to conventional separation UAD,the non-separation UAD effectively reduces the cutting forces by 24.2%and 1.9%for CFRP stage and 22.1%and 2.6%for the Ti stage at the feed rates of 50 and 70μm/r,***,the non-separation UAD significantly improves hole quality,including higher hole diameter accuracy,lower hole surface roughness,and less hole *** addition,the non-separation UAD can decrease adhesive tool *** study demonstrates that,compared to conventional drilling(CD),the non-separation UAD can effectively improve drilling quality and tool life while maintaining high efficiency.

关键词： Carbon fiber-reinforced plastic and titanium alloy(CFRP/Ti)stacks Ultrasonic-assisted drlling(UAD) Cutting force Surface integrity Tool wear

Characteriz.tion of the pheromone receptors in Mythimna loreyi reveals the differentiation of sex.pheromone recognition in Mythimna species

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Insect Science 2024年第1期31卷 173-185页

作者： Chan Wang Lei liu Tian-Yu Huang Yu z.ang Yang liu Gui-Rong Wang State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina Guangdong Laboratory of Lingnan Modern Agriculture ShenzhenGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina School of Forestry Northeast Forestry UniversityHarbinChina Key Laboratory of Biohaz.rd Monitoring Green Prevention and Control for Artificial GrasslandMinistry of Agriculture and Rural AffairsInstitute of Grassland Research of Chinese Academy of Agricultural SciencesInner Mongolia HohhotChina

Pheromone receptors(PRs)are key proteins in the molecular mechanism of pheromone recognition,and ex.loring the functional differentiation of PRs between closely related species helps to understand the evolution of moth mating *** components of the agricultural pest Mythimna loreyi have turned into(z.-9-tetradecen-1-yl acetate(z.-14:OAc),(z.-7-dodecen-1-yl acetate(z.-12:OAc),and(z.-11-hex.decen-1-yl acetate,while the composition differs from that of *** in the genus *** understand the molecular mechanism of pheromone recognition,we sequenced and analyz.d antennal transcriptomes to identify 62 odorant receptor(OR)*** ex.ression levels of all putative ORs were analyz.d using differentially ex.ressed gene *** candidate PRs were quantified and functionally characteriz.d in the x.nopus oocytes ***6 and MlorPR3 were determined to be the receptors of major and minor components z.-14:OAc and z.-12:***1 and female antennae(FA)-biased MlorPR5 both possessed the ability to detect pheromones of sympatric species,including(z.E)-9,12-tetradecadien-1-ol,(z.-9-tetradecen-1-ol,and(z.-*** on the comparison of PR functions between *** and ***,we analyz.d the differentiation of pheromone recognition mechanisms during the evolution of the mating systems of 2 Mythimna species.

关键词： antennal transcriptome Mythimna loreyi pheromone receptor sex.pheromone x.nopus oocyte

Tripartite motif-containing protein 11(TRIM11):a novel weapon against Alz.eimer’s disease

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Signal Transduction and Targeted Therapy 2024年第2期9卷 339-340页

作者： Yichu Fu Bi z.ang Jianfeng liu College of Life Science and Technology Key Laboratory of Molecular Biophysics of MOEHuazhong University of Science and TechnologyWuhanHubei 430074China

In a recent study published in Science,z.ang et *** that tripartite motif-containing(TRIM)protein 11(TRIM11)ex.ibited strong inhibition on tau aggregation,which is a pathological characteristic of tauopathies including Alz.eimer’s disease(AD).1 This makes TRIM11 a promising novel target for the treatment of AD and other tauopathies.

关键词： Alz.eimer tau TRIM

Eco-evolutionary evidence for the global diversity pattern of Cycas(Cycadaceae)

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Journal of Integrative Plant Biology 2024年第6期66卷 1170-1191页

作者： Jian liu Anders JLindstrom Yiqing Gong Shanshan Dong Yusheng(Chris)liu Shouz.ou z.ang x.n Gong CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Department of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant ResourcesKunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China Global Biodiversity Conservancy 144/124 Moo3Soi Bua ThongBangsalaeSattahipChonburi 20250Thailand Key Laboratory of Southern Subtropical Plant Diversity Fairy Lake Botanical GardenShenzhen&Chinese Academy of SciencesShenzhen 518004China Department of Earth and Environmental Sciences Indiana University-IndianapolisIndianapolisIN 46202USA

The evolution of the latitudinal diversity gradient(LDG),characteriz.d by a peak in diversity toward the tropics,has captured significant attention in evolutionary biology and ***,the inverse LDG(i-LDG)mechanism,wherein species richness increases toward the poles,remains inadequately *** are among one of the oldest lineages of ex.ant seed plants and have undergone ex.ensive diversification in the ***,the ex.ant cycad abundance ex.ibits an i-LDG pattern,and the underlying causes for this phenomenon remain largely ***,using 1,843 nuclear genes from a nearly complete sampling,we conducted comprehensive phylogenomic analyses to establish a robust species-level phylogeny for Cycas,the largest genus within *** then reconstructed the spatial-temporal dynamics and integrated global environmental data to evaluate the roles of species ages,diversification rates,contemporary environment,and conservatism to ancestral niches in shaping the i-LDG *** found Cycas ex.erienced decreased diversification rates,coupled with the cooling temperature since its origin in the Eocene from continental *** regions have distinctively contributed to the formation of i-LDG for Cycas,with the northern hemisphere acting as evolutionary museums and the southern hemisphere serving as ***,water-related climate variables,specifically precipitation seasonality and potential evapotranspiration,were identified as paramount factors constraining Cycas species richness in the rainforest biome near the ***,the adherence to ancestral monsoonal climates emerges as a critical factor in sustaining the diversity *** study underscores the imperative of integrating both evolutionary and ecological approaches to comprehensively unravel the mechanisms underpinning global biodiversity patterns.

关键词： cycads latitudinal diversity gradient niche conservatism spatiotemporal diversification species richness