Advanced Sustainable Systems最新文献_第4页

Biodegradable Shape-memory Thermoplastic Polyurethanes With a Rigid Sugar Diol 具有刚性糖二醇的可生物降解形状记忆热塑性聚氨酯

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-07-01 DOI: 10.1002/adsu.202500515

Mengting Ye, Jielin Xu, Qian Chen, Yong Chen, Ruimin Xie, Jing Wu, Huaping Wang

{"title":"Biodegradable Shape-memory Thermoplastic Polyurethanes With a Rigid Sugar Diol","authors":"Mengting Ye, Jielin Xu, Qian Chen, Yong Chen, Ruimin Xie, Jing Wu, Huaping Wang","doi":"10.1002/adsu.202500515","DOIUrl":"https://doi.org/10.1002/adsu.202500515","url":null,"abstract":"Thermoplastic polyurethane (TPU) has gained widespread applications in many fields. However, recent research focus has shifted from basic performance optimization to multifunctional development of TPU materials. Shape-memory polyurethanes (SMPUs) are one of the most promising intelligent polyurethane materials because of their unique stimulus response and recovery ability. In this study, a series of linear poly(isoidide-2,5-dimethanol urethane)s (PIUs) is developed using poly(ε-caprolactone) (PCL) diol and novel carbohydrate monomers Isoidide-2,5-dimethanol (IIDML), with systematically varied hard segment content ranging from 0% to 30%. The synthesized PIUs demonstrated exceptional mechanical properties, achieving tensile strengths of 14–38 MPa and elongation at break of 964–1286%, along with a suitable melt temperature (45 °C) as the transition temperature. Notably, as the hard segment content increased, the crystallization properties and physical crosslinking density which are determining factors of the shape-memory effect showed an opposite trend. Furthermore, the PIUs showed good hydrolysis effects in pH 1, 7.2, and 13 conditions. These findings demonstrate that precisely adjusting the hard segment content enables the design of biodegradable PIUs with promising potential for shape-memory applications.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Situ Layered Double Hydroxide for Efficient Remediation of Acidic Water 原位层状双氢氧化物高效修复酸性水

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-07-01 DOI: 10.1002/adsu.202500178

Zhongyang Qian, Jiaojing Hu, Jingbo Chao, Jinlou Huang, Frederic Coulon, Jingqi Zhang, Qing Hu, Xiao Jin Yang

{"title":"In Situ Layered Double Hydroxide for Efficient Remediation of Acidic Water","authors":"Zhongyang Qian, Jiaojing Hu, Jingbo Chao, Jinlou Huang, Frederic Coulon, Jingqi Zhang, Qing Hu, Xiao Jin Yang","doi":"10.1002/adsu.202500178","DOIUrl":"10.1002/adsu.202500178","url":null,"abstract":"The efficient and sustainable in situ remediation of high-strength acidic groundwater contaminated by complex micropollutants with minimal use of chemicals is a challenge. Here it is reported that MgAl alloy achieves neutralization and a complete removal of 20 mg L−1 Cd2+, Cr(VI), Cu2+, Ni2+, and Zn2+ in 15 min from acidic water free of chemicals. The removal rate of heavy metals and nitrate increases with decreasing pH and is not significantly reduced after 5 cycles of treating acidic water. The excellent performance of MgAl alloy in reactivity, durability, and efficiency is attributed to a synergistic effect of chemical reduction and eutectic reactions, which is catalyzed by intermetallic compound Mg17Al12 and in situ layered double hydroxide (iLDH). The pH 2.47 of an acid mine drainage sample from copper ore mines is raised to 7.4 ± 0.4 and the concentrations of Al, Cr, Cu, Fe, Mn, Ni, and Zn ions are reduced to <0.55 mg L−1 from 5–559 mg L−1. In contrast, quick lime treatment increases the pH to 12.45, whereas activated carbon, zerovalent iron, and conventional LDH are not able to neutralize or remove Al3+ and heavy metals. The findings of this study provide new insights into the efficient, green, and sustainable approach for acidic water remediation.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 8","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coordination Chemistry Modulation of LaFeO3 as a Promising Anode Material for Nickel-Metal Batteries 镍金属电池负极材料LaFeO3的配位化学调制研究

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-07-01 DOI: 10.1002/adsu.202500445

Kailiang Ren, Tianyi Wang, Wenda Shi, He-Bin Luo, Jin Liang, Jie Kong

{"title":"Coordination Chemistry Modulation of LaFeO3 as a Promising Anode Material for Nickel-Metal Batteries","authors":"Kailiang Ren, Tianyi Wang, Wenda Shi, He-Bin Luo, Jin Liang, Jie Kong","doi":"10.1002/adsu.202500445","DOIUrl":"https://doi.org/10.1002/adsu.202500445","url":null,"abstract":"Perovskite oxide LaFeO3 (LFO) has emerged as a highly promising anode material for nickel-metal hydride (Ni-MH) batteries, owing to its friendly characteristics and cost-effectiveness. Nevertheless, the practical application of LFO in Ni-MH batteries faces two major limitations: insufficient electronic conductivity and unsatisfactory specific capacity. To address these issues, the aluminum (Al) and cobalt (Co) doped LaFeO3 materials are synthesized in this contribution via high-temperature solid state reactions. The doping of Al and Co enhances the covalent interaction between the 3p orbitals of the dopants and the O2p orbitals, facilitating electron migration and thereby improving the material's electrical conductivity, which in turn enhances its discharge performance. After Al and Co modification, the maximum discharge capacity of LFO increased from 178.8 to 314.8 mAh g−1, while the high-rate discharge performance (HRD) improved from 11.2% to 66.1%. Moreover, after 100 cycles, the discharge capacity reached 223 mAh g−1, significantly higher than that of the undoped sample (98 mAh g−1). This work proposes an effective strategy to enhance the electrochemical performance of materials by employing doping to shorten electron transport pathways and improve electrical conductivity.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supercritical CO2-Directed Dual-Defect Engineering in PtNi/C Electrocatalysts for Enhanced Hydrogen Evolution 超临界co2定向双缺陷PtNi/C电催化剂加速析氢工程

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-30 DOI: 10.1002/adsu.202500579

Mengdi An, Pengfei Yan, Tianpei Ge, Xiaoli Zheng, Weiqian Kong, Heng Lu, Haowen Lei, Qun Xu

{"title":"Supercritical CO2-Directed Dual-Defect Engineering in PtNi/C Electrocatalysts for Enhanced Hydrogen Evolution","authors":"Mengdi An, Pengfei Yan, Tianpei Ge, Xiaoli Zheng, Weiqian Kong, Heng Lu, Haowen Lei, Qun Xu","doi":"10.1002/adsu.202500579","DOIUrl":"https://doi.org/10.1002/adsu.202500579","url":null,"abstract":"Optimizing the electronic structure of electrocatalysts by defect engineering is a predominant strategy to enhance hydrogen evolution reaction (HER) performance, which still remains challenging. This study develops an ingenious supercritical carbon dioxide (SC CO2)-engineered dual-defect strategy, synthesizing defect-rich PtNi alloy nanocatalysts anchored on carbon supports (PtNi/C). The SC CO2 treatment introduces defects into both the carbon matrix and PtNi nanoparticles, enhancing metal-support interactions and optimizing electronic structures. Electrochemical evaluations demonstrate exceptional HER performance of the PtNi/C catalysts with an ultralow overpotentials of 17 mV at 10 mA cm−2 and 119 mV at 100 mA cm−2 in alkaline environment, outperforming the 20 wt.% Pt/C. DFT calculations elucidate that carbon and Pt vacancies synergistically lower the energy barriers for water dissociation (Volmer step), while Pt vacancies further promote the hydrogen adsorption (Tafel step), accelerating reaction kinetics. The dual-defect architecture balances the water dissociation and hydrogen desorption, enabling outstanding HER enhancement. This work highlights SC CO2 as a powerful tool for defect-engineering and establishes a structure-activity framework for advancing high-performance HER systems.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Templated Synthesis of Defect-Rich Metal–Organic Frameworks for Efficient Oxygen Evolution Electrocatalysis 高效析氧电催化富缺陷金属有机骨架的模板合成

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-29 DOI: 10.1002/adsu.202500457

Fen Huang, Wanli Liang, Hong-Xiao Yang, Yun-Qi Dai, Hongjuan Wang, Yonghai Cao, Hao Yu, Hao-Fan Wang

{"title":"Templated Synthesis of Defect-Rich Metal–Organic Frameworks for Efficient Oxygen Evolution Electrocatalysis","authors":"Fen Huang, Wanli Liang, Hong-Xiao Yang, Yun-Qi Dai, Hongjuan Wang, Yonghai Cao, Hao Yu, Hao-Fan Wang","doi":"10.1002/adsu.202500457","DOIUrl":"https://doi.org/10.1002/adsu.202500457","url":null,"abstract":"Metal–organic frameworks (MOFs) have been widely explored in oxygen evolution reaction (OER) electrocatalysis due to their tunable structures, high surface area, and abundant active sites. During OER process, MOFs transform into metal oxyhydroxides, which serve as actual active species for oxygen evolution. Therefore, the rational design of MOFs to enhance this transformation is crucial for achieving superior OER performance. In this study, nickel-cobalt layered double hydroxide (NiCo-LDH) is used as a 2D template for MOF synthesis, and both 2,6-naphthalenedicarboxylic acid (NDC) and defect ligand ferrocenecarboxylic acid (Fc) are introduced to convert the hydroxide precursor to a defect-rich MOF material (NiCo-NDC-Fc/NF), which directly applies as an OER electrocatalyst. This strategy enables the construction of coordination defects in MOFs, exposing a large number of unsaturated metal sites that facilitated catalyst reconstruction, leading to outstanding OER activity. The NiCo-NDC-Fc/NF catalyst exhibits remarkably low overpotentials of only 219 and 254 mV at current densities of 10 and 100 mA cm−2, respectively. Furthermore, this catalyst also demonstrates excellent stability after operating at 60 mA cm−2 for 100 h. This work offers a facile method for the effective construction of defective MOFs, and provides valuable reference for the design of MOF-based electrocatalysts.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser-Induced HKUST-1 Derived Porous Electrocatalyst: an Innovative Approach to Boost Sustainable Ammonia Synthesis 激光诱导HKUST-1衍生多孔电催化剂：促进可持续氨合成的创新方法

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-25 DOI: 10.1002/adsu.202500441

Aneena Lal, Hani Porat, Asmita Dutta, Manish Kumar Yadav, Arie Borenstein

{"title":"Laser-Induced HKUST-1 Derived Porous Electrocatalyst: an Innovative Approach to Boost Sustainable Ammonia Synthesis","authors":"Aneena Lal, Hani Porat, Asmita Dutta, Manish Kumar Yadav, Arie Borenstein","doi":"10.1002/adsu.202500441","DOIUrl":"https://doi.org/10.1002/adsu.202500441","url":null,"abstract":"Conventional synthesis methods of metal-embedded graphene electrodes are time-consuming, energy-extensive, and complex multi-step fabrications, limiting the large-scale production of the materials. This study uses laser processing to fabricate HKUST-1 MOF (Cu3(C9H3O6)2)-derived porous Cu-Cu2O/C (L-HKUST-1) electrocatalyst under ambient conditions for the electrocatalytic nitrate reduction to ammonia (E-NRA). The swift, one-pot, binder-free, zero waste, and scalable laser processing technique enables directly printing Cu-Cu2O nanoparticles embedded in a carbon matrix on the nickel substrate under ambient temperature and pressure. Chemical and morphological characterization corroborate the transformation of pristine HKUST-1 to L-HKUST-1, thereby validating that the laser parameters (power, scan rate, resolution) are optimum for the successful fabrication of L-HKUST-1. Electrochemical nitrate reduction is a sustainable way to produce ammonia and can potentially promote a carbon-neutral economy. The electrochemical investigation demonstrates that the maximum yield of ammonia and Faradaic efficiency for L-HKUST-1 are 13,871.58 ± 17.11 µg h−1 mg −1(cat) at −0.65 V versus RHE (Reversible Hydrogen Electrode) and 80 ± 6.7% at −0.45 V, respectively. Augmented positive overpotential at −10 mAcm−2 in the presence of the nitrate source confirms the superior electrocatalytic behavior for E-NRA.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adsu.202500441","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Environmental Impacts and Cost Analysis of Perovskite Nanocrystals for Light-Emitting Diode Applications 用于发光二极管的钙钛矿纳米晶体的环境影响和成本分析

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-25 DOI: 10.1002/adsu.202500516

Jaume-Adrià Alberola-Borràs, Thais Caroline Almeida da Silva, Iván P. Franco, Rafael S. Sánchez, Beatriz Julián-López, Iván Mora-Seró, Rosario Vidal

{"title":"Environmental Impacts and Cost Analysis of Perovskite Nanocrystals for Light-Emitting Diode Applications","authors":"Jaume-Adrià Alberola-Borràs, Thais Caroline Almeida da Silva, Iván P. Franco, Rafael S. Sánchez, Beatriz Julián-López, Iván Mora-Seró, Rosario Vidal","doi":"10.1002/adsu.202500516","DOIUrl":"https://doi.org/10.1002/adsu.202500516","url":null,"abstract":"Perovskite colloidal nanocrystals (PeNCs) exhibit outstanding optoelectronic properties, making them promising candidates for light-emitting diodes (LEDs). Despite the remarkable performance improvements in perovskite-based LEDs (PeLEDs) over the years, a comprehensive life cycle assessment (LCA), covering their synthesis and purification, operation, and end-of-life disposal, remains crucial as large-scale production and commercialization approach. This study provides an exhaustive study of environmental impacts and costs on the fabrication of CsPbBr3 PeNCs by the conventional hot injection (HI) route and the alternative microwave-assisted (MW) approach. Morphological, structural, and optical characterization confirms the high quality of both sets of NCs, although minor differences are detected. The MW route significantly reduces impacts at the laboratory scale due to its superior energy efficiency. However, at the industrial scale, both routes exhibit similar energy efficiencies, making the environmental comparison less conclusive. Additionally, n-dodecane (DOD) is explored as an alternative solvent for PeNC synthesis, with its recovery via distillation successfully demonstrated. While DOD recovery reduces solvent consumption, the lower reaction yield results in a higher overall environmental impact. The MW ODE method currently offers the lowest total costs, primarily due to reduced labor expenses. Advancing the MW method with DOD to achieve yields comparable to HI could represent a breakthrough for sustainable PeNCs synthesis.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adsu.202500516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Double Potassium Salt Self-Activation Strategy to Construct Hierarchical Porous Carbon for Zinc Ion Hybrid Capacitor 双钾盐自活化策略制备锌离子杂化电容器用分层多孔碳

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-25 DOI: 10.1002/adsu.202500247

Jun Ni, Jiayi Chen, Cong Sun, Changli Ding, Yunhe Zhao, Xiaoliang Wu

{"title":"Double Potassium Salt Self-Activation Strategy to Construct Hierarchical Porous Carbon for Zinc Ion Hybrid Capacitor","authors":"Jun Ni, Jiayi Chen, Cong Sun, Changli Ding, Yunhe Zhao, Xiaoliang Wu","doi":"10.1002/adsu.202500247","DOIUrl":"https://doi.org/10.1002/adsu.202500247","url":null,"abstract":"Hierarchical porous carbon exhibits enormous potential as a cathode for zinc ion hybrid capacitor (ZIHC). In this work, three-dimensional (3D) hierarchical porous carbon is prepared by pyrolysis of potassium stearate and potassium polyacrylate using a self-activation strategy. Because of the unique 3D interconnected hierarchical porous framework, high specific surface area and plentiful oxygen functional groups, the HPC-700 electrode shows a specific capacitance of 378.67 F g−1 and excellent cycle stabilization with the capacity retention rate of 98.1% after 10000 cycles. Moreover, the HPC-700//HPC-700 symmetrical supercapacitor provides an energy density of 25.41 Wh kg−1 and superior electrochemical stability and good cycle performance. More interestingly, the assembled HPC-700//ZnSO4 (aq)//Zn hybrid capacitor delivers a capacitance of 439.2 F g−1 (195.2 mAh g−1) and an energy density of 156.18 Wh kg−1 (99.97 W kg−1). The ZIHC shows excellent electrochemical performance with 96.5% initial capacity after 10 000 cycles. Overall, the research highlights an efficient and facile strategy to prepare HPC cathode materials for high-performance ZIHC.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Grain Boundary Engineering: A Shortcut to Efficient Electrocatalytic Reactions 晶界工程：高效电催化反应的捷径

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-25 DOI: 10.1002/adsu.202500644

Jiayang Zhou, Yinhao Ji, Yuxiang Wang, Linbin Xie, Longlu Wang

{"title":"Grain Boundary Engineering: A Shortcut to Efficient Electrocatalytic Reactions","authors":"Jiayang Zhou, Yinhao Ji, Yuxiang Wang, Linbin Xie, Longlu Wang","doi":"10.1002/adsu.202500644","DOIUrl":"https://doi.org/10.1002/adsu.202500644","url":null,"abstract":"Grain boundary engineering has witnessed significant advancements in recent years, which optimizes material properties by precisely controlling the density and characteristics of grain boundaries. Various advanced fabrication methods have emerged, such as pulsed laser ablation, electrodeposition, vapor phase growth, and interfacial synthesis. These techniques enable the production of grain boundary-enriched materials through the precise control of manufacturing parameters. Additionally, grain boundary engineering demonstrates substantial potential in diverse catalytic applications. This review thoroughly examines recent advancements in grain boundary engineering. First, it investigates key fabrication methods such as pulsed laser ablation, electrodeposition, vapor phase growth, and interfacial synthesis, explaining how they create grain boundary-enriched materials. Second, it explores its applications in various electrocatalytic reactions. Last but not least, it delves into the integration of grain boundary engineering with artificial intelligence for structure prediction and property optimization. Looking ahead, as synthesis technologies continue to improve and characterization methods advance, grain boundary engineering is expected to achieve more breakthroughs in energy conversion, storage, and environmental protection. It is particularly promising in the development of efficient and low-cost catalysts.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulating the Optical Properties of Carbon Quantum Dots Through Cerium Doping to Boost the Photocatalytic Efficiency of Titanium Dioxide Composites 掺杂铈调制碳量子点光学性质提高二氧化钛复合材料的光催化效率

IF 6.1 3区材料科学

Advanced Sustainable Systems Pub Date : 2025-06-25 DOI: 10.1002/adsu.202500283

Bo-Rong Huang, Pei-Kai Hsu, Alexandre Gloter, Chi-Liang Chen, Jenn-Ming Song, Shih-Yun Chen

{"title":"Modulating the Optical Properties of Carbon Quantum Dots Through Cerium Doping to Boost the Photocatalytic Efficiency of Titanium Dioxide Composites","authors":"Bo-Rong Huang, Pei-Kai Hsu, Alexandre Gloter, Chi-Liang Chen, Jenn-Ming Song, Shih-Yun Chen","doi":"10.1002/adsu.202500283","DOIUrl":"https://doi.org/10.1002/adsu.202500283","url":null,"abstract":"In this study, cerium-doped carbon quantum dots (Ce-CDs) are first synthesized by hydrothermal decomposition of organic compounds mixed with different contents of cerium nitrate hexahydrate. The analysis results indicate that cerium doping effectively reduces the CD core's oxygen- and nitrogen-related structural defects. As the doping concentration increases, the incorporation of cerium further induces different defects in carbon quantum dots. Ultraviolet photoemission spectroscopy and Low Energy Inverse Photoemission Spectroscopy show Ce-CDs have similar band gap energy but different Fermi levels. Second, Ce-CDs are combined with TiO2 to prepare TiO2/Ce-CDs composites, which demonstrate strong optical properties and enhanced photocatalytic performance due to the structural modification of Ce-CDs. These composites improve visible light photocatalytic performance by improving the charge separation of electron-hole pairs. The main active species include hydroxyl radicals on the TiO₂ surface and superoxide anions on Ce-CDs. The best performance is observed in the TiO2/0.5Ce-CDs composite, with a reaction rate constant as high as 0.087 min−1 under visible light. This study demonstrates the potential of Ce doping on carbon quantum dots and their advanced photocatalytic applications.","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0