高压锅造金刚石,科学还是科学幻想?---科大教授的研究成果遭受质疑
国际著名的德国应用化学(Angew. Chem. Int. Ed. )2004年第36期发表Sachdev的读者来信,题为Diamonds from the Pressure Cooker - Science or Science Fiction? 来信尖锐质疑中国科技大学钱逸泰院士,长江学者陈乾旺教授研究组的两篇论文。陈乾旺在同一期发表有答辩。编辑Peter Gölitz 发表有编者按。
钱陈被质疑的两篇论文有关金刚石(即钻石)的合成,分别发表在美国化学会志J. Am. Chem. Soc. 2003,9302和德国应用化学Angew. Chem. Int. Ed. 2003,4501上。两篇论文内容几乎一样,同时投稿,同时发表,但没有交叉引用。陈在答辩中对此道歉。
Sachdev文章质疑的要点包括实验条件报道不够具体,无法重复实验,终产品的鉴定留有疑问,中间产品(对了解反应过程尤其重要)的表征缺失等。
陈对质疑的答辩明显不够理直气壮。承认对数据进行过处理。对于报道的结果有错误的质疑则以实验员搞错图谱等为理由推脱责任。答辩文章结尾更是贻笑大方“从报道的体系中我们时常获得金刚石,”亦即他们也没把握重复实验结果。另外有意思的是陈在答辩文章的署名中已丢掉教授头衔(带头衔是该杂志署名的一贯做法),凸现丢盔弃甲的溃态。答辩文章的作者栏中也没了钱逸泰院士的大名,似有丢车保帅之意。
以往金刚石的人工合成条件十分苛刻,1400度高温,十万个大气压力。钱陈报道的合成方法则异乎寻常的简单,440度,800个大气压力。 这是国际著名刊物和报章争相报导的原因,也是大众感兴趣的原因,不曾想其中会有大问题。中国媒体去年曾强势报导,中国的科研管理机构甚至说造出了1.2毫米尺寸的金刚石,不知有谁见证过那造的金刚石。质疑事件出来,中国科研管理机构该好好查查,以明真相。
附: Peter Gölitz 的编者按
Last year in Angewandte Chemie and in the Journal of the American Chemical Society Quianwang Chen et al. reported diamond syntheses from MgCO3-Na and CO2-(Li, Na, K), respectively.[1], [2] The authors have apologized for failing to cross-reference the papers and for manipulation of some of the data (see the second paragraph in the Correspondence from Z. Lou and Q. Chen on page 4700).
In addition, the results reported in both publications are heavily criticized by H. Sachdev in the Correspondence on page 4696:[3] The details of the reacti on conditions are not reported in sufficient detail for the work to be repeated and the characterizations (or even proof) of the final products are not with out doubt; furthermore, the characterization of intermediate products, important for the postulated reaction mechanism, is missing. Even if a diamond synthesis is, in principle, possible under the conditions presumably present in the reaction system used by Chen et al. then its actual realization remains doubtful. Chen and Lou give a series of arguments in their Reply[4] in order to support their diamond synthesis, however, they close with the comment we could produce diamonds from time to time in MgCO3-Na and CO2-(Li, Na, K) system (italicized by me), which naturally casts doubts about the reproducibility. Hopefully this Note and the two Correspondences[3], [4] will lead to a rapid resolution of the problem of whether or not diamonds can be prepared by the method of Chen et al.[1], [2].
来源:·日月光华 bbs.fudan.edu.cn·HTTP [FROM: 10.22.29.128]
这样一起国际上声名狼藉,丑闻昭著的事件,在国内又是无声无息,不了了之。当事人教授,院士照当,奖金照拿,照样上讲台教训学生“不要浮躁,作假,伪造数据”,真是社会讽刺的---大贪作报告,小贪戴手铐。
这样的事件还会层出不穷,愈演愈烈,中国的那些“重大突破”,“国际一流”,“国家科技特等奖,一等奖”都应该打个问号?