Applied Catalysis A: General最新文献_第2页

Impact of adding C2H6 on the CO2 reforming of CH4 over Al-Incorporated Co/MgAl2O4 catalyst 添加C2H6对al - Co/MgAl2O4催化剂上CH4 CO2重整的影响

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-30 DOI: 10.1016/j.apcata.2025.120607

Jung-Hyun Park, Hyeryeung Noh, Hwa Sung Lee, Joong Jin Han, Tae-Sun Chang

{"title":"Impact of adding C2H6 on the CO2 reforming of CH4 over Al-Incorporated Co/MgAl2O4 catalyst","authors":"Jung-Hyun Park, Hyeryeung Noh, Hwa Sung Lee, Joong Jin Han, Tae-Sun Chang","doi":"10.1016/j.apcata.2025.120607","DOIUrl":"10.1016/j.apcata.2025.120607","url":null,"abstract":"<div><div>This study investigates the impact of incorporating aluminum (Al) as a promoter into a Co/MgAl<sub>2</sub>O<sub>4</sub> (MA) catalyst for the CO<sub>2</sub> reforming of CH<sub>4</sub> with C<sub>2</sub>H<sub>6</sub>. The Co/MA catalyst exhibited the highest initial conversion of CH<sub>4</sub> and CO<sub>2</sub>; however, both values gradually declined over the time. In contrast, all Al-promoted catalysts maintained stable conversions, and the CoAl(0.50)/MA catalyst demonstrated notable catalytic stability after 50 h of reaction. The weight of the Al-promoted catalyst either remained constant or increased slightly compared with the Al-unpromoted catalyst during CH<sub>4</sub>-TGA, indicating superior resistance to coking. Although the exact location of the Al species could not be determined experimentally, it can be inferred that the appropriate addition of Al to the Co/MA catalyst may partially form a CoAl<sub>2</sub>O<sub>4</sub> phase, which facilitates CO<sub>2</sub> activation and suppresses carbon deposition. This suggests that the Al promoter kinetically controls the rate of carbon deposition and oxidation on the Co/MA catalyst.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120607"},"PeriodicalIF":4.8,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Specific insights on the synergistic role of metal and acid sites of low loading Pd(PVA)/zeolite catalysts for furfural hydrogenation 低负载Pd(PVA)/沸石催化剂中金属和酸位协同糠醛加氢作用的具体见解

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-28 DOI: 10.1016/j.apcata.2025.120612

Sara Morandi , Maria Pinto , Ilaria Barlocco , Silvio Bellomi , Alberto Villa , Maela Manzoli

{"title":"Specific insights on the synergistic role of metal and acid sites of low loading Pd(PVA)/zeolite catalysts for furfural hydrogenation","authors":"Sara Morandi , Maria Pinto , Ilaria Barlocco , Silvio Bellomi , Alberto Villa , Maela Manzoli","doi":"10.1016/j.apcata.2025.120612","DOIUrl":"10.1016/j.apcata.2025.120612","url":null,"abstract":"<div><div>The synergistic role of metal and acid sites in Pd colloids with polyvinyl alcohol (PVA) supported on zeolite catalysts was proved in furfural hydrogenation. Pd nanoparticles were prepared using PVA sol-immobilization and deposited on zeolites with different pore size (Y, ZSM-5 and FER) and similar Si/Al ratio to correlate the amount of accessible Brønsted and Lewis acid sites with catalytic activity and selectivity. Catalytic tests at 50 °C showed that Pd/Y is the most active catalyst, achieving 95.0 % conversion after 120 min. The presence of Pd is essential for furfural conversion, with bare zeolites showing minimal activity under the same conditions. Product distribution varies with the type of zeolite, with Pd/Y producing a complex mix including tetrahydrofurfuryl alcohol (THFA) and isopropyl levulinate ester (ILE) as the main product after 120 min, while other catalysts mainly form furfuryl isopropyl ether (FIE). FESEM-EDS, TEM, XPS and FT-IR measurements revealed that the most marked difference between Pd/Y and the other catalysts is the much higher amount of Lewis acid sites. This means that the synergistic effect between Pd and Lewis acidity is the key factor for obtaining THFA and ILE through H<sub>2</sub> splitting and double bond activation.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120612"},"PeriodicalIF":4.8,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A selective TiO2-x/Ni catalyst derived from NiTi-layered double hydroxides for efficient photothermal CO2 methanation 基于niti层状双氢氧化物的选择性TiO2-x/Ni催化剂用于高效光热CO2甲烷化

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-28 DOI: 10.1016/j.apcata.2025.120613

Chi Zhang , Junwen Zhang , Lina Che , Xusheng Wang , Li Shi

引用次数: 0

Study of the role of the support material in the manganese promotion of cobalt-based Fischer-Tropsch synthesis catalysts 载体材料在钴基费托合成催化剂中锰促进作用的研究

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-28 DOI: 10.1016/j.apcata.2025.120611

Oscar Ivanez, Edd A. Blekkan

{"title":"Study of the role of the support material in the manganese promotion of cobalt-based Fischer-Tropsch synthesis catalysts","authors":"Oscar Ivanez, Edd A. Blekkan","doi":"10.1016/j.apcata.2025.120611","DOIUrl":"10.1016/j.apcata.2025.120611","url":null,"abstract":"<div><div>The manganese promotion of cobalt−based catalysts for the Fischer-Tropsch synthesis was investigated using four different supports. Different loadings of manganese were deposited on the catalysts using incipient wetness impregnation before the impregnation of cobalt and rhenium. All the Mn-promoted catalysts exhibited an increase in chain growth probability and olefin content in the products. This enhanced C<sub>5+</sub> selectivity is attributed mainly to decreased methane production. The promotion of the catalytic activity was dependent on the support material. On γ−Al<sub>2</sub>O<sub>3</sub> the catalyst activity increased with increasing manganese loading. Using a narrow pore silica support (SiO<sub>2</sub>−N) a maximum in the activity was found at an intermediate manganese loading. Further addition of Mn decreased the activity and worsened the product distribution with an increase in methane selectivity. The catalysts supported on TiO<sub>2</sub> and wide pore silica (SiO<sub>2</sub>−W), did not show major activity changes with Mn addition. The addition of Mn decreased the metallic surface area in most cases, indicating blocking of Co sites. The pore structure and the metal−support interactions play a role in how the Mn and Co are dispersed, yielding enhanced or inhibited activity. The origin of the promotion was investigated with CO and syngas adsorption experiments coupled with recording DRIFTS spectra. The results indicated a decrease in CO bond energy due to an increase in electron density of the Co with the Mn addition. The electronic effect appeared to be in balance with the site blocking of Mn. Therefore, choice of support and preparation conditions of the materials are important.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120611"},"PeriodicalIF":4.8,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The positive effect and the nature of weakened acid strength on DME carbonylation: A case study of Fe-doped MOR zeolite 弱酸强度对二甲醚羰基化反应的积极影响及其性质——以掺铁MOR沸石为例

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-27 DOI: 10.1016/j.apcata.2025.120609

Li-Yun Zhang , Xiao-Bo Feng , Pan Deng , Feng Chen , Jia-Pei Guo , Yu-Hui Wang , Kang-Zhou Wang , Jing-Pei Cao

{"title":"The positive effect and the nature of weakened acid strength on DME carbonylation: A case study of Fe-doped MOR zeolite","authors":"Li-Yun Zhang , Xiao-Bo Feng , Pan Deng , Feng Chen , Jia-Pei Guo , Yu-Hui Wang , Kang-Zhou Wang , Jing-Pei Cao","doi":"10.1016/j.apcata.2025.120609","DOIUrl":"10.1016/j.apcata.2025.120609","url":null,"abstract":"<div><div>Isomorphous substitution is a promising strategy for improving the catalytic performance of zeolites in C-C coupling reactions. Selectively incorporating Fe atoms into the 12-membered ring (12-MR) of MOR zeolite significantly enriches Brønsted acid sites in the 8-MR (B<sub>8-MR</sub>) and simultaneously reduces their acid strength, greatly improving activity, methyl acetate (MA) selectivity, and catalyst stability during dimethyl ether (DME) carbonylation. Experimental and theoretical results reveal that the weakened B<sub>8-MR</sub> suppresses methoxy and acetyl carbocation formation due to the increased energy barriers, causing a prolonged induction period. Moreover, the negatively charged zeolite with stronger nucleophilicity formed after deprotonation of weaker acid strength of O–H exhibits higher adsorption stability of acetyl carbocation that significantly inhibits its rapid reconstruction into ketene. However, the evolution path from ketene to acetyl group is less affected by the weakened B<sub>8-MR</sub>. Therefore, the slow formation but unchanged conversion rate of ketene on the weakened B<sub>8-MR</sub> unexpectedly facilitates the in-situ conversion of ketene into acetyl group within 8-MR rather than diffusing into 12-MR to generate coke, thereby increasing MA selectivity and catalyst lifespan. The new paradigm regarding the positive effect of weakened acid strength on DME carbonylation over Fe-doped MOR zeolite will provide meaningful guidance for acid-catalyzed reaction.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"709 ","pages":"Article 120609"},"PeriodicalIF":4.8,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoflower-like Mo1.8W0.1S modified covalent organic framework as an efficient ohmic junction for enhanced photocatalytic hydrogen evolution 纳米花状Mo1.8W0.1S修饰的共价有机骨架作为增强光催化析氢的有效欧姆结

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-26 DOI: 10.1016/j.apcata.2025.120606

Lu Ding , Minjun Lei , Zhiliang Jin

{"title":"Nanoflower-like Mo1.8W0.1S modified covalent organic framework as an efficient ohmic junction for enhanced photocatalytic hydrogen evolution","authors":"Lu Ding , Minjun Lei , Zhiliang Jin","doi":"10.1016/j.apcata.2025.120606","DOIUrl":"10.1016/j.apcata.2025.120606","url":null,"abstract":"<div><div>Mo<sub>1.8</sub>W<sub>0.1</sub>S with metal-like properties, excellent electrical conductivity and abundant active sites modifies the Covalent Organic Framework (COF) through its nanoflower structure to enhance photocatalytic performance. The performance of COF-OH-3 and Mo<sub>1.8</sub>W<sub>0.1</sub>S composite catalyst in photocatalytic hydrogen evolution reaction is investigated. The hydrogen evolution amount of the composite was found to be 2.5 times higher than that of the single COF-OH-3 and 2166 times higher than that of pure Mo<sub>1.8</sub>W<sub>0.1</sub>S. The nanosheet structure of COF-OH-3 is wrapped around the surface of Mo<sub>1.8</sub>W<sub>0.1</sub>S, which acts as an electron acceptor by receiving electrons transferred from COF-OH-3. The ohmic junction between COF-OH-3 and Mo<sub>1.8</sub>W<sub>0.1</sub>S facilitates electron transfer via an internal electric field, promoting efficient charge separation and transport. Meanwhile, the superior electrical conductivity and catalytic activity of Mo<sub>1.8</sub>W<sub>0.1</sub>S further promote hydrogen evolution. This study significantly optimizes the efficacy of photocatalytic hydrogen evolution by utilizing the synergistic effect between metal-like and organic framework structures, and provides a new idea for photocatalyst hydrogen evolution, which has a wide application prospect.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120606"},"PeriodicalIF":4.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailored pores, enhanced activity: Porous organic polymer-supported metallocene catalysts for ethylene polymerization 定制孔，增强活性：用于乙烯聚合的多孔有机聚合物负载茂金属催化剂

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-26 DOI: 10.1016/j.apcata.2025.120604

Jing He , Daheng Wen , Yuan Wang , Yong Qian , Jianshuang Guo , Ze Yun , Weicheng Yang

{"title":"Tailored pores, enhanced activity: Porous organic polymer-supported metallocene catalysts for ethylene polymerization","authors":"Jing He , Daheng Wen , Yuan Wang , Yong Qian , Jianshuang Guo , Ze Yun , Weicheng Yang","doi":"10.1016/j.apcata.2025.120604","DOIUrl":"10.1016/j.apcata.2025.120604","url":null,"abstract":"<div><div>Immobilizing metallocene catalysts on suitable carriers can overcome the drawbacks of their homogeneous counterpart in catalyzing olefin polymerization. However, the development of porous organic carriers with tunable specific surface area, pore structure and commendable compatibility for metallocene catalyst loading remains challenging. In this study, porous organic polymers (POPs) with tunable specific surface area (158–1407 m<sup>2</sup>/g) and pore volume (0.15–1.04 cm<sup>3</sup>/g) were successfully fabricated by a facile one-pot method through direct knitting of aromatic copolymer monomers. We provided a comprehensive investigation into the impact of specific surface area, pore structure and chemical structure of POPs on the catalytic polymerization of ethylene as POPs-supported metallocene catalysts. The results reveal that interactions among POPs, MAO and Cp<sub>2</sub>ZrCl<sub>2</sub> govern both the formation and spatial distribution of active sites as well as the overall catalytic activity. The catalytic kinetics show that the POPs-supported metallocene catalysts exhibited no initiation period during ethylene polymerization. And the catalytic activity (20513 kgPE(mol Zr)<sup>−1</sup>h<sup>−1</sup>) is reached with a support possessing a specific surface area of 438 m<sup>2</sup>/g and a pore volume of 0.26 cm<sup>3</sup>/g. This work highlights the significant potential of POPs as tailor-made porous organic polymer carriers for metallocene-catalyzed ethylene polymerization.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120604"},"PeriodicalIF":4.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive-free organic degradation via ROS excited from dissolved oxygen driven by cobalt single-atom catalyst 钴单原子催化剂驱动的溶解氧激发ROS无添加剂有机降解

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-26 DOI: 10.1016/j.apcata.2025.120605

Tianlang Wang , Yang Xu , Ning Li, Hongliang Han, Zhanfang Ma

{"title":"Additive-free organic degradation via ROS excited from dissolved oxygen driven by cobalt single-atom catalyst","authors":"Tianlang Wang , Yang Xu , Ning Li, Hongliang Han, Zhanfang Ma","doi":"10.1016/j.apcata.2025.120605","DOIUrl":"10.1016/j.apcata.2025.120605","url":null,"abstract":"<div><div>The generation of free radicals in advanced oxidation processes (AOPs) typically relies on external substances and energy, which significantly hinders their scalability and cost-effectiveness in wastewater treatment. Developing additive-free AOPs is essential for efficient and sustainable wastewater treatment. Herein, a new strategy for advanced oxidation is demonstrated, in which dissolved oxygen is directly activated to produce reactive oxygen species (ROS) without oxidants or energy input, achieved with a cobalt single-atom catalyst (Co-CAT-3). This strategy delivers remarkable degradation efficiency, exceeding the performance typically reported for conventional AOP systems. As a representative case for kinetic and reactive free radical species involved in organic degradation, a model organic compound, methylene blue, was used to evaluate degradation performance, which revealed a pseudo-first-order rate constant of 0.2916 min<sup>−1</sup> and a catalytic capacity of ∼0.61 μmol mg<sup>−1</sup>. The proposed strategy also exhibited efficient catalytic activity toward structurally diverse organic pollutants, including representative antibiotics sulfamethoxazole (SMX) and tetracycline (TC), persistent drug carbamazepine (CBZ), endocrine-disrupting compound bisphenol A (BPA), azo dye methyl orange (MO), and small-molecule industrial intermediate maleic anhydride (MA), underscoring its universality and practical applicability. This work provides a new paradigm for additive- and energy-free ROS generation, thereby enabling efficient pollutant degradation.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120605"},"PeriodicalIF":4.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulation on reaction path and product selectivity by non-metallic P-doped catalysts in hydrodeoxygenation 非金属p掺杂催化剂对加氢脱氧反应路径和产物选择性的调节

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-25 DOI: 10.1016/j.apcata.2025.120603

Qunfeng Chen, Daobin Tang, Zhiyuan Tang, Qi Zhang, Longlong Ma, Xinghua Zhang

{"title":"Modulation on reaction path and product selectivity by non-metallic P-doped catalysts in hydrodeoxygenation","authors":"Qunfeng Chen, Daobin Tang, Zhiyuan Tang, Qi Zhang, Longlong Ma, Xinghua Zhang","doi":"10.1016/j.apcata.2025.120603","DOIUrl":"10.1016/j.apcata.2025.120603","url":null,"abstract":"<div><div>The microstructure of the catalyst influences the electronic states and acid-base properties, allowing for the selective modulation of the catalytic mechanism and substrate conversion pathways, thereby enhancing the selectivity of the target products. In this work, two catalysts, low P-doped Pd/1.5W-0.125P-SiO<sub>2</sub> and high P-doped Pd/1.5W-1P-SiO<sub>2</sub>, were synthesized by tuning the amount of non-metallic phosphorus doping in WO<sub>3</sub>-SiO<sub>2</sub>. These catalysts exhibited distinct catalytic pathways and product selectivity for the hydrodeoxygenation (HDO) of δ-furfurylidenelevulinic acid (FDLA), a biomass-derived platform molecular condensation intermediate. Comprehensive characterizations revealed that high P doping induced the formation of a WO<sub>3</sub>-PO<sub>4</sub> structure, which provided strong Brønsted acid sites. These sites facilitated the cleavage of the C<sub>4</sub>-O bond during lactone ring opening and selectively preserved the carboxyl functional group, yielding 56.64 % decanoic acid (DA). By contrast, low P-doped catalysts retained the WO<sub>3</sub> structure rich in Lewis acid sites but lacking Brønsted acid sites, leading to the lactone via hydrogenolysis to break the C<sub>1</sub>-O bond first, followed by dehydration reaction at the Lewis acid sites, thus favoring the production of deeply deoxygenated products (DDPs). A moderate amount of water promoted proton transfer in the HDO process, and adding 8 mg of water increased the DA yield to 66.1 %. The as-prepared catalyst demonstrated acceptable stability during recycling, maintaining a DA yield of 46.64 % after four cycles. Non-metallic phosphorus doping provides a viable strategy for modifying the electronic structure and acid-site properties of catalysts, enabling the selective retention of oxygen-containing functional groups in biomass condensation intermediates.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120603"},"PeriodicalIF":4.8,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning NiCu alloy metallicity and acidity on worm-like SiO2 for stable levulinic acid hydrogenation 在蠕虫状SiO2上调节NiCu合金的金属丰度和酸度以稳定乙酰丙酸加氢

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-25 DOI: 10.1016/j.apcata.2025.120601

Xuan Wang , Hao Zhang , Huan Xiang , Lin Wang , Fangli Jing , Wenhao Fang

引用次数: 0