 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 5 | 1/1 | 返回列表 |
| 查看: 537 | 回復(fù): 2 | ||
| 本帖產(chǎn)生 1 個(gè) 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看 | ||
| 當(dāng)前只顯示滿足指定條件的回帖，點(diǎn)擊這里查看本話題的所有回帖 | ||
qa535758874鐵蟲(chóng) (初入文壇)
|
[求助]
英語(yǔ)論文翻譯，求助！大神幫幫忙！
|
|
|
2.2. Synthesis of graphite oxide Graphite oxide was synthesized through a modified Hummers method [30] from nature graphite flake. 2 g of graphite and 1 g of NaNO3 were dissolved in 46 mL of concentrated H2SO4 under an ice bath. After about 15 min of stirring, 6 g of KMnO4 was gradually added into the suspension with stirring as slowly as possible in order to control the reaction temperature below 20 ◦C. The suspension was stirred for 2 h, and then maintained at 35 ◦C for 30 min. 92 mL of deionized water was slowly poured into the suspension,resulting in a quick increase in temperature, and the temperature should be controlled lower than 98 ◦C. After 15 min, the suspension was then further diluted to approximately 280 mL with warm deionized water. 20 mL of 30% H2O2 was added for the purpose of removing the residual KMnO4 and MnO2 to change the color into luminous yellow. Then, the suspension was filtered and washed with warm 5% HCl aqueous solution and deionized water, respectively, until no sulfates were detected and the pH of the filtrate was adjusted to 7. The sample of graphite oxide was dried under vacuum at 50 ◦C to a constant weight, and then milled to an ideal particle size. |
回復(fù)此樓» 猜你喜歡
326求調(diào)劑
已經(jīng)有8人回復(fù)
-
333求調(diào)劑
已經(jīng)有7人回復(fù)
-
一志愿東華大學(xué)控制學(xué)碩320求調(diào)劑
已經(jīng)有3人回復(fù)
-
考研化學(xué)學(xué)碩調(diào)劑，一志愿985
已經(jīng)有7人回復(fù)
-
化學(xué)工程321分求調(diào)劑
已經(jīng)有21人回復(fù)
-
0703化學(xué)調(diào)劑
已經(jīng)有15人回復(fù)
-
0703化學(xué)調(diào)劑 ，六級(jí)已過(guò)，有科研經(jīng)歷
已經(jīng)有14人回復(fù)
-
326求調(diào)劑
已經(jīng)有4人回復(fù)
-
311求調(diào)劑
已經(jīng)有13人回復(fù)
-
311求調(diào)劑
已經(jīng)有7人回復(fù)
18236135970
銀蟲(chóng) (小有名氣)
- 翻譯EPI: 6
- 應(yīng)助: 2 (幼兒園)
- 金幣: 686.2
- 散金: 1150
- 紅花: 2
- 帖子: 60
- 在線: 55.9小時(shí)
- 蟲(chóng)號(hào): 3431437
- 注冊(cè): 2014-09-21
- 性別: GG
- 專(zhuān)業(yè): 化學(xué)工程及工業(yè)化學(xué)
3樓2015-03-03 21:32:11
18236135970
銀蟲(chóng) (小有名氣)
- 翻譯EPI: 6
- 應(yīng)助: 2 (幼兒園)
- 金幣: 686.2
- 散金: 1150
- 紅花: 2
- 帖子: 60
- 在線: 55.9小時(shí)
- 蟲(chóng)號(hào): 3431437
- 注冊(cè): 2014-09-21
- 性別: GG
- 專(zhuān)業(yè): 化學(xué)工程及工業(yè)化學(xué)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
qa535758874: 金幣+35, 翻譯EPI+1, ★★★★★最佳答案, 非常感謝你的回復(fù),我很滿意，很棒！謝謝你哈！ 2015-03-08 18:02:54
qa535758874: 金幣+35, 翻譯EPI+1, ★★★★★最佳答案, 非常感謝你的回復(fù),我很滿意，很棒！謝謝你哈！ 2015-03-08 18:02:54
|
2.2 氧化石墨的合成 通過(guò)改良Hummers法利用天然石墨合成氧化石墨。冰浴條件下，將2g石墨和1g NaNO3溶解到46ml濃硫酸中，經(jīng)過(guò)大約15min攪拌，6g KMnO4逐漸加入到懸浮液中，同時(shí)盡可能慢攪拌控制反應(yīng)溫度在20°C以下。懸浮液攪拌2h.然后在35°C下保持30min。92ml去離子水緩慢倒入懸浮液導(dǎo)致溫度快速上升，溫度應(yīng)控制在98°C以下。經(jīng)過(guò)15min，用溫的去離子水將懸浮液進(jìn)一步稀釋到大約280ml。加入20ml 30％H2O2去除殘留的KMmO4和MnO2，改變顏色至明亮的黃色。然后過(guò)濾懸浮液，用溫5％HCl水溶液和去離子水清洗。相對(duì)來(lái)說(shuō)，直到檢測(cè)不出硫酸鹽，濾出液PH大約為7。將氧化石墨樣品在50°C真空條件下干燥至恒重，然后研磨至理想顆粒大小。 [ 發(fā)自手機(jī)版 http://www.gaoyang168.com/3g ] |
2樓2015-03-03 21:07:19
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 326求調(diào)劑 +5 | 諾貝爾化學(xué)獎(jiǎng)覬?/a> 2026-03-15 | 8/400 |
|
|---|---|---|---|---|
|
|
[考研]
 一志愿東華大學(xué)控制學(xué)碩320求調(diào)劑
+3
|
Grand777 2026-03-21 | 3/150 |
|
|
|
[考研] 化學(xué)工程321分求調(diào)劑 +17 | 大米飯！ 2026-03-15 | 21/1050 |
|
|
|
[考研] 311求調(diào)劑 +12 | 冬十三 2026-03-15 | 13/650 |
|
|
|
[考研] 278求調(diào)劑 +9 | 煙火先于春 2026-03-17 | 9/450 |
|
|
|
[考研] 材料學(xué)碩301分求調(diào)劑 +6 | Liyouyumairs 2026-03-21 | 6/300 |
|
|
|
[考研] 求調(diào)劑 +3 | Ma_xt 2026-03-17 | 3/150 |
|
|
[考研] 一志愿 西北大學(xué) ，070300化學(xué)學(xué)碩，總分287，雙非一本，求調(diào)劑。 +3 | 晨昏線與星海 2026-03-18 | 3/150 |
|
|
|
[考研] 一志愿南昌大學(xué)，327分，材料與化工085600 +9 | Ncdx123456 2026-03-19 | 9/450 |
|
|
|
[考研] 求調(diào)劑，一志愿:南京航空航天大學(xué)大學(xué) ，080500材料科學(xué)與工程學(xué)碩，總分289分 +4 | @taotao 2026-03-19 | 4/200 |
|
|
|
[考研] 一志愿蘇州大學(xué)材料求調(diào)劑，總分315（英一） +5 | sbdksD 2026-03-19 | 5/250 |
|
|
|
[考研] 329求調(diào)劑 +9 | 想上學(xué)吖吖 2026-03-19 | 9/450 |
|
|
|
[考研] 289求調(diào)劑 +6 | 懷瑾握瑜l 2026-03-20 | 6/300 |
|
|
|
[考博] 申博26年 +3 | 八6八68 2026-03-19 | 3/150 |
|
|
|
[考研] 0703化學(xué)調(diào)劑 +3 | 妮妮ninicgb 2026-03-17 | 3/150 |
|
|
|
[考研] 生物學(xué)071000 329分求調(diào)劑 +3 | 我愛(ài)生物生物愛(ài)?/a> 2026-03-17 | 3/150 |
|
|
|
[考研] 283求調(diào)劑 +3 | 聽(tīng)風(fēng)就是雨； 2026-03-16 | 3/150 |
|
|
|
[考研] 一志愿211 0703方向310分求調(diào)劑 +3 | 努力奮斗112 2026-03-15 | 3/150 |
|
|
|
[考研] 318求調(diào)劑 +3 | Yanyali 2026-03-15 | 3/150 |
|
|
|
[考研] 0703化學(xué)調(diào)劑 290分有科研經(jīng)歷，論文在投 +7 | 膩膩gk 2026-03-14 | 7/350 |
|