本文選題：多孔材料 + 二維�。� 參考：《華東理工大學(xué)》2015年碩士論文

【摘要】：鑒于石墨烯擁有兩種主要的電化學(xué)方面的性能：一是石墨烯具有很高的比表面積和優(yōu)秀的電子傳導(dǎo)率,可為離子存儲和傳輸提供理想的平臺；二是石墨烯擁有豐富多樣的含氧官能團,如氧化石墨烯(GO)和還原氧化石墨烯(RGO)。因此可以作為良好的2D基底,通過負載不同的各向異性生長的金屬或金屬氧化物納米顆粒而成為電極材料。近年來,石墨烯及其復(fù)合材料已經(jīng)成為了研究最廣泛的電極材料。多孔材料通常具有永久性的多孔性、較低的質(zhì)量密度、合成的多樣化和較高的物理化學(xué)穩(wěn)定性,在氣體存儲和分離的應(yīng)用上具有很強的競爭力。本文設(shè)計并制備了將多孔材料和石墨烯相結(jié)合的復(fù)合材料,經(jīng)過測試,在電催化和氣體儲存方面顯示了優(yōu)越的性能,本文具體內(nèi)容為：(1)通過二茂鐵(Cp2Fe)和還原石墨烯(rG)的配體交換反應(yīng)把二茂鐵官能團(CpFe)成功的接到還原石墨烯表面上,得到了二茂鐵修飾的還原石墨烯(rGFeCp)。用類似的一步反應(yīng)以二茂鐵作為插層劑的石墨片得到了很好的剝離效果,得到了獨立的CpFe-基石墨烯納米片(GFeCp,≈10層)。經(jīng)過熱解和氨氣活化后,rGFeCp和GFeCp轉(zhuǎn)化成了二維鐵/氮共摻雜多孔石墨烯材料rGFe-800a和GFe-800a。得到的rGFeCp-800a在堿性條件下(0.1MKOH)表現(xiàn)出了很好的氧化還原(ORR)電化學(xué)性能,在-0.29 V處出現(xiàn)較低的半波電位,主導(dǎo)四電子轉(zhuǎn)移機制(0.1 V,n=3.5),最大極限擴散電流密度為4.86 mAcm-2。此外,它與20%的商業(yè)鉑碳相比表現(xiàn)出了極好的耐甲醇性能。鐵/氮共摻雜材料將成為具有良好ORR性能材料的重要一員。(2)通過sonogashira連接反應(yīng)合成三種石墨烯基的共軛二維多孔聚合物高分子(GMP-1,GMP-2和GMP-3),并通過傅里葉變換紅外光譜學(xué)和固體核磁13CCP/MAS對其化學(xué)結(jié)構(gòu)進行確認。在氮氣環(huán)境下通過熱重分析對材料的熱穩(wěn)定性進行測試。利用X射線衍射(XRD)測量GMP系列的結(jié)晶性。通過掃描隧道顯微鏡(SEM)和高分辨率透射電子顯微鏡(TEM)測量材料的形態(tài)和微觀結(jié)構(gòu)。在77 K的溫度下測量多孔網(wǎng)絡(luò)N2吸附作用的等溫線。相比于其他多孔聚合物,GMP-1、GMP-2和GMP-3的比表面積分別為920m2g-1,636 m2g-1,和211 m2 g-1。得到的孔徑分布圖表明這些材料具有較窄的孔徑分布,分布在1.3至4.0 nm之間。更重要的是,這些多孔高分子表現(xiàn)出了出色的CO2和H2吸收能力。在273 K的溫度下,GMP-1的C02的吸收量最多能夠達到95.2 mg g-1,屬于多孔材料中C02吸收能力最高的一種,H2的吸收能力在77K溫度下最多可達113 mg g-1、 GMP-1, GMP-2,和GMP-3的Qst值分別是35,25和21 kJ mol-,相對其他多孔材料要高。高分子網(wǎng)絡(luò)表現(xiàn)出了對CO2/N2很理想的選擇性。以上結(jié)果顯示了GMP系列材料是可以應(yīng)用于CO2的存儲和分離上有前景的材料。
[Abstract]:Since graphene has two main electrochemical properties: first, graphene has a high specific surface area and excellent electron conductivity, which can provide an ideal platform for ion storage and transport; Second, graphene has rich and diverse oxygen functional groups, such as graphene oxide (GOO) and reduced graphene oxide (RGOG). Therefore, it can be used as a good 2D substrate to form electrode materials by loading different anisotropic metal or metal oxide nanoparticles. In recent years, graphene and its composites have become the most widely studied electrode materials. Porous materials usually have permanent porosity, low mass density, diversity of synthesis and high physical and chemical stability. They are highly competitive in gas storage and separation applications. In this paper, we have designed and prepared composite materials which combine porous materials with graphene. After testing, we have demonstrated excellent performance in electrocatalysis and gas storage. The specific content of this paper is: (1) Ferrocene-modified reduced graphene (rGFeCpN) was prepared by ligand exchange reaction of ferrocene (Cp2Fe2) and reduced graphene (rG). The ferrocene functional group (CpFe2) was successfully connected to the surface of reduced graphene and ferrocene-modified reduced graphene (rGFeCpN) was obtained. The graphite sheet with ferrocene as the intercalation agent has a good peeling effect with a similar one-step reaction, and an independent CpFe- based graphene nanosheet (GFeCp) is obtained, which is about 10 layers. After pyrolysis and ammonia activation, rGFeCp and GFeCp were transformed into two dimensional iron / nitrogen co-doped porous graphene materials rGFe-800a and GFe-800a. The obtained rGFeCp-800a exhibits good electrochemical performance at alkaline condition (0.1 MKOH), with a lower half-wave potential at -0.29 V, leading to a four-electron transfer mechanism of 0.1 V ~ (-1) N ~ (3. 5), and a maximum limiting diffusion current density of 4.86 mAcm-2. In addition, it shows excellent methanol resistance compared with 20% commercial platinum carbon. Iron / nitrogen co-doped material will become an important member of the material with good ORR properties.) three kinds of graphene based conjugated two-dimensional porous polymers, GMP-1, GMP-2 and GMP-3N, will be synthesized by sonogashira bonding reaction. The results of Fourier transform infrared spectroscopy (FTIR) And solid NMR 13CCP/MAS to confirm its chemical structure. The thermal stability of the material was tested by thermogravimetric analysis in nitrogen environment. The crystallinity of GMP series was measured by X-ray diffraction. The morphology and microstructure of the materials were measured by scanning tunneling microscope (SEM) and high resolution transmission electron microscopy (TEM). The isotherm of N 2 adsorption of porous network was measured at 77 K. Compared with other porous polymers, the specific surface areas of GMP-2 and GMP-3 are 920m2g-1636 m2g-1 and 211m2 g-1respectively. The pore size distribution shows that these materials have narrow pore size distribution ranging from 1.3 nm to 4.0 nm. More importantly, these porous polymers exhibit excellent CO2 and H 2 absorption. At 273K, the absorptivity of CO2 of GMP-1 can reach 95.2 mg g ~ (-1) up to 95.2 mg g ~ (-1). The absorption capacity of H _ 2, which belongs to the highest absorption capacity of carbon dioxide in porous materials, can reach 113mg g ~ (-1), GMP-1, GMP-2 and GMP-3 at 77K, respectively. The Qst values of GMP-1 and GMP-3 are 3 525 and 3 525, respectively. 21 kJ mol -, which is higher than other porous materials. Polymer networks exhibit ideal selectivity to CO2/N2. The results show that GMP series are promising materials for CO2 storage and separation.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB383.4;TQ127.11

【相似文獻】

相關(guān)期刊論文 前10條

1 何楓,張錫文,王學(xué)芳;多孔材料的流體動力特性[J];復(fù)合材料學(xué)報;2002年01期

2 崔毅,王國英,賈恒濤,沙鵬宇,盧曉麗,郭少毅,王宗寶;開孔型橡膠-塑料多孔材料的結(jié)構(gòu)與性能[J];塑料;2003年03期

3 湯國華,楊俊和,張琢,鄭金標(biāo);一種定量分析多孔材料孔隙結(jié)構(gòu)的新方法[J];煤炭轉(zhuǎn)化;2004年01期

4 張俊彥,張平,甘秋蘭,肖映雄;多孔材料代表單元的性質(zhì)[J];工程力學(xué);2004年02期

5 曹文英;金屬陶瓷多孔材料在山東科技大學(xué)研制成功[J];新材料新裝飾;2004年03期

6 吳宇清,姚振漢;有限元法及邊界元法應(yīng)用于復(fù)合粘塑性多孔材料模擬[J];燕山大學(xué)學(xué)報;2004年02期

7 白青龍,張春花,王冀敏;多孔材料的研究進展[J];內(nèi)蒙古民族大學(xué)學(xué)報(自然科學(xué)版);2004年05期

8 錢吉裕,李強,余凱,宣益民;確定復(fù)雜多孔材料有效導(dǎo)熱系數(shù)的新方法[J];中國科學(xué)E輯:工程科學(xué) 材料科學(xué);2004年11期

9 魏蕓,李忠全;氣泡法測量多孔材料孔徑的簡化解析法[J];粉末冶金工業(yè);2004年06期

10 李曉杰,王金相,閆鴻浩,趙錚;爆炸燒結(jié)中多孔材料等壓推廣沖擊狀態(tài)方程[J];大連理工大學(xué)學(xué)報;2005年03期

相關(guān)會議論文 前10條

1 王建祥;段慧玲;黃筑平;;基于表面效應(yīng)的多孔材料力學(xué)和物理性能設(shè)計[A];復(fù)合材料力學(xué)的現(xiàn)代進展與工程應(yīng)用——全國復(fù)合材料力學(xué)研討會論文集[C];2007年

2 孫士平;張衛(wèi)紅;;多相多孔材料/結(jié)構(gòu)的集成優(yōu)化設(shè)計[A];慶祝中國力學(xué)學(xué)會成立50周年暨中國力學(xué)學(xué)會學(xué)術(shù)大會’2007論文摘要集（下）[C];2007年

3 汪強兵;奚正平;湯慧萍;王培;孫濤;楊保軍;葛淵;談萍;遲煜，

本文編號：1806573