 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 3 | 1/1 | 返回列表 |
| 查看: 904 | 回復(fù): 2 | ||
帝國小經(jīng)營家金蟲 (小有名氣)
|
[求助]
求助：{010} and {110}晶面的釩酸鉍（BiVO4）合成 已有1人參與
|
| 我根據(jù)“Spatial separation of photogenerated electronsand holes among {010} and {110} crystal facets of BiVO4”這篇論文的合成方法，合成BiVO4.具體合成方法如下：All chemicals were analytical grade and were used without further purification. BiVO4 sample was synthesized by a hydrothermal procedure. Typically, the precursors NH4VO3 (36 mmol) and Bi(NO3)3·5H2O (36 mmol) were dissolved in 300 mL of 2.0 M nitric acid solution, and the pH value of the solution was then adjusted to 2.0 with ammonia solution under stirring until formation of an orange precipitate. After about 2 h aging, the orange precipitate at the bottom of the beaker was transferred to a Teflon-lined stainless steel autoclave with a capacity of 100 mL and hydrothermally treated at 200 oC for 24 h. After the autoclave was cooled to room temperature, a vivid yellow powder was separated by filtration, washed with de-ionized water for more than 3 times, and then dried at 60 oC in air for overnight. 但是得到的形貌與論文相差甚遠，不知道哪個環(huán)節(jié)出問題。現(xiàn)有幾個疑問，望大牛們解答：1.調(diào)節(jié) pH到2的過程中，我使用pH計邊攪拌邊測量，是否需要配合精密pH試紙精準(zhǔn)控制？ 2.調(diào)節(jié)完pH后，我是直接將沉淀溶液轉(zhuǎn)移到反應(yīng)釜進行水熱反應(yīng)，而論文中是“orange precipitate at the bottom of the beaker was transferred to a Teflon-lined stainless steel autoclave”，是否需要將沉淀過濾，去除溶液水分，然后轉(zhuǎn)移至反應(yīng)釜進行反應(yīng)？或者是存在其他合成過程中需要特別注意的問題，希望大牛們能指點一二，感謝�。。。。�！ |
回復(fù)此樓» 猜你喜歡
一志愿C9求調(diào)劑
已經(jīng)有1人回復(fù)
-
LiOH高溫?zé)Y(jié)
已經(jīng)有6人回復(fù)
-
金屬材料論文潤色/翻譯怎么收費?
已經(jīng)有150人回復(fù)
-
一志愿中科大080500總分324求調(diào)劑
已經(jīng)有6人回復(fù)
-
求調(diào)劑
已經(jīng)有4人回復(fù)
-
陶瓷燒制出現(xiàn)黑點
已經(jīng)有0人回復(fù)
-
一志愿北科266求調(diào)劑
已經(jīng)有1人回復(fù)
-
青島科技大學(xué)“生物基高分子與功能凝膠彈性體”研究組招收2026碩士研究生
已經(jīng)有0人回復(fù)
星火abcd
至尊木蟲 (著名寫手)
- MEPI: 1
- 應(yīng)助: 111 (高中生)
- 金幣: 12027.2
- 散金: 6796
- 紅花: 64
- 沙發(fā): 1
- 帖子: 1681
- 在線: 2897.9小時
- 蟲號: 1461321
- 注冊: 2011-10-26
- 性別: GG
- 專業(yè): 金屬材料的凝固與結(jié)晶學(xué)
2樓2019-07-25 22:07:08
cyz719986425
鐵蟲 (初入文壇)
- 應(yīng)助: 0 (幼兒園)
- 金幣: 12.5
- 帖子: 11
- 在線: 7.6小時
- 蟲號: 6398657
- 注冊: 2017-04-26
- 專業(yè): 波譜分析與成像分析
3樓2020-09-17 17:31:49
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 帝國小經(jīng)營家 的主題更新
| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 085701環(huán)境工程317分求調(diào)劑 +7 | 6汆尼9 2026-03-07 | 7/350 |
|
|---|---|---|---|---|
|
|
[基金申請]
 成果系統(tǒng)訪問量大，請15分鐘后再嘗試。由此給您造成的不便，敬請諒解。
+16
|
xhuama 2026-03-02 | 19/950 |
|
|
[考研] 第一志愿上海大學(xué)，專業(yè)化學(xué)工程與技術(shù)，總分288，求調(diào)劑 +3 | 1829197082 2026-03-07 | 3/150 |
|
|
|
[考研] 材料專碩323求調(diào)劑 +5 | 李白26 2026-03-07 | 5/250 |
|
|
|
[考研] 274求調(diào)劑 +7 | cgyzqwn 2026-03-01 | 14/700 |
|
|
|
[考研] 324求調(diào)劑 +5 | wxz2 2026-03-03 | 8/400 |
|
|
|
[考研] 332材料求調(diào)劑 +6 | zjy101327 2026-03-05 | 7/350 |
|
|
|
[考博] 26申博-目前4篇SCI一作 +4 | chen_2024 2026-03-02 | 4/200 |
|
|
|
[考研] 一志愿東北大學(xué)080500，英一數(shù)二343分求調(diào)劑 +5 | Seele_v5 2026-03-04 | 5/250 |
|
|
|
[考研] 085701環(huán)境工程 求調(diào)劑 +7 | xiiiia 2026-03-04 | 7/350 |
|
|
|
[論文投稿]
主編終審卡者不動
 100+4
|
Stray2021 2026-03-03 | 4/200 |
|
|
|
[基金申請] 沒有青基直接申請面上，感覺自己瘋了 +6 | kevin63t 2026-03-02 | 12/600 |
|
|
|
[考研] 264求調(diào)劑 +8 | 26調(diào)劑 2026-03-03 | 8/400 |
|
|
|
[考研] 0855機械工程324求調(diào)劑 +3 | 鄭SK 2026-03-02 | 7/350 |
|
|
|
[考研] 一志愿314求調(diào)劑 +7 | 202111120625 2026-03-03 | 7/350 |
|
|
|
[考研] 331求調(diào)劑 +3 | zzZ&zZ 2026-03-03 | 3/150 |
|
|
|
[考研] 0854總分272 +5 | 打小就是老實人 2026-03-02 | 6/300 |
|
|
|
[考研] 267求調(diào)劑 +6 | 釣魚佬as 2026-03-02 | 6/300 |
|
|
|
[考研] 化工335求調(diào)劑 +5 | 摸摸貓貓頭 2026-03-02 | 5/250 |
|
|
|
[考研] 1 +5 | 2026計算機_誠心 2026-03-01 | 8/400 |
|