化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2010年
2期
308-312,318
,共6页
罗婕%黄民%宋芳%钱君律%李佟茗
囉婕%黃民%宋芳%錢君律%李佟茗
라첩%황민%송방%전군률%리동명
绿锈%铁氧体系%纳米材料
綠鏽%鐵氧體繫%納米材料
록수%철양체계%납미재료
green rust%iron hydroxide%nano-material
采用半间歇式滴加合成法成功制取了绿锈.此方法的特点是在pH值接近中性的条件下,将三价铁溶液滴加到亚铁溶液中,同时通过调节NaOH溶液的滴加速度,维持体系pH值恒定.TEM图片显示该制备工艺所得绿锈只有六边形晶貌,没有三价铁氢氧化物针状晶体形成.该方法制备的绿锈可较长时间存在,并且达到纳米级,对纳米级铁氧体产品的制备有十分重要的研究意义.
採用半間歇式滴加閤成法成功製取瞭綠鏽.此方法的特點是在pH值接近中性的條件下,將三價鐵溶液滴加到亞鐵溶液中,同時通過調節NaOH溶液的滴加速度,維持體繫pH值恆定.TEM圖片顯示該製備工藝所得綠鏽隻有六邊形晶貌,沒有三價鐵氫氧化物針狀晶體形成.該方法製備的綠鏽可較長時間存在,併且達到納米級,對納米級鐵氧體產品的製備有十分重要的研究意義.
채용반간헐식적가합성법성공제취료록수.차방법적특점시재pH치접근중성적조건하,장삼개철용액적가도아철용액중,동시통과조절NaOH용액적적가속도,유지체계pH치항정.TEM도편현시해제비공예소득록수지유륙변형정모,몰유삼개철경양화물침상정체형성.해방법제비적록수가교장시간존재,병차체도납미급,대납미급철양체산품적제비유십분중요적연구의의.
A novel method was developed to prepare green rust (GR).Under the pH value close to neutral condition,ferric iron solution was slowly added into the ferrous solution.The pH value was carefully controlled simultaneously through adjusting the addition rate of NaOH solution.TEM photoes demonstrated that the GR obtained by this preparation technology only has the hexagon crystals and does not have acicular shape of iron hydroxide.