| 查看: 921 | 回复: 2 | ||
帝国小经营家金虫 (小有名气)
|
[求助]
求助：{010} and {110}晶面的钒酸铋（BiVO4）合成 已有1人参与
|
| 我根据“Spatial separation of photogenerated electronsand holes among {010} and {110} crystal facets of BiVO4”这篇论文的合成方法，合成BiVO4.具体合成方法如下：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. 但是得到的形貌与论文相差甚远，不知道哪个环节出问题。现有几个疑问，望大牛们解答：1.调节 pH到2的过程中，我使用pH计边搅拌边测量，是否需要配合精密pH试纸精准控制？ 2.调节完pH后，我是直接将沉淀溶液转移到反应釜进行水热反应，而论文中是“orange precipitate at the bottom of the beaker was transferred to a Teflon-lined stainless steel autoclave”，是否需要将沉淀过滤，去除溶液水分，然后转移至反应釜进行反应？或者是存在其他合成过程中需要特别注意的问题，希望大牛们能指点一二，感谢！！！！！！ |
回复此楼» 猜你喜欢
模拟工业电积锌遇到问题
已经有2人回复
-
求助《中国高等教育》期刊投稿方法
已经有4人回复
-
金属材料论文润色/翻译怎么收费?
已经有240人回复
-
分享一本适合FLUENT入门的书
已经有1人回复
-
退役光伏组件回收处置风险评估报告
已经有0人回复
-
电缆铠装 缆芯扭转问题
已经有2人回复
-
求JCPDS 04-013-5289标准卡片
已经有4人回复
-
冶金新晋博导招生
已经有0人回复
-
安徽工业大学新能源金属团队招收2026级硕士调剂
已经有0人回复
-
2026年江西理工大学材料、化工与冶金-招收2名调剂生（材料、冶金、环境、化工专业）
已经有0人回复
星火abcd
至尊木虫 (著名写手)
- MEPI: 1
- 应助: 111 (高中生)
- 金币: 12063.2
- 散金: 6796
- 红花: 64
- 沙发: 1
- 帖子: 1681
- 在线: 2899小时
- 虫号: 1461321
- 注册: 2011-10-26
- 性别: GG
- 专业: 金属材料的凝固与结晶学
2楼2019-07-25 22:07:08
3楼2020-09-17 17:31:49
