陈浩
光催化纳米材料、农药分析及降解、环境化学、转基因食品安全。
个性化签名
- 姓名:陈浩
- 目前身份:
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- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
勘查地质学
- 研究兴趣:光催化纳米材料、农药分析及降解、环境化学、转基因食品安全。
陈浩,男,博士,华中农业大学理学院化学系教授,博士生导师。国际杂志Applied Catalysis B: Environmental 和Journal of Environmental Management 等杂志审稿人。
曾参加多项国家自然科学基金、教育部重点基金和博士点专项基金项目的研究,曾主持国家重大科技专项子课题、湖北省自然科学基金、湖北省重大科技攻关子项目、厦门大学教育部分析化学重点实验室开放课题和校交叉学科基金项目的研究工作。已发表研究论文50余篇,其中发表SCI论文20余篇。指导博士生和硕士生多名。
主要研究方向:光催化纳米材料、农药分析及降解、环境化学、转基因食品安全。
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347
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成果数
7
陈浩, Ke Dai a, b, Hao Chen a, *, Tianyou Peng b, Dingning Ke b, Huabing Yi b
Chemosphere 69 (2007) 1361-1367,-0001,():
-1年11月30日
The photodegradation of methyl orange (MO) was investigated in aqueous suspension containing titania nanoparticles with mesostructures(m-TiO2) under UV irradiation. The experimental results show that 98% MO can be mineralized in the 1.0 g l_1 m-TiO2 suspension(pH 2.0) after 45 min illumination. Particular attention was devoted to the identification and the transformation of the fragmentsretaining the chromophoric group. The photodegradation mechanism of the quinonoid MO mainly involves three intermedial processes:demethylation, methylation and hydroxylation. Among those processes, demethylation is more favorable than the hydroxylation, but thehydroxylation results in the largest number of intermediates. The degradation pathway of quinonoid MO under the optimal conditions isalso proposed.
Mesoporous TiO2 nanoparticle, Photocatalysis, Methyl orange, Degradation mechanism
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陈浩, Hao Chena, Ke Daia, b, Tianyou Peng b, ∗, Huanping Yang b, De Zhaob
Materials Chemistry and Physics 96 (2006) 176-181,-0001,():
-1年11月30日
Mesoporous titania nanoparticles with high specific surface area and thermal stable anatasewallwas synthesized from surfactant laurylaminehydrochloride (LAHC) and inorganic precursor Ti(SO4)2. The as-synthesized and calcined materials were characterized by X-ray diffraction, nitrogen adsorption-desorption, transmission electron micrographs, Fourier transform infrared spectroscopy and thermogravimetric analysis.The obtained mesoporous TiO2 nanoparticles have mean diameter of 25.5 nm. The specific surface area of the mesoporous nanosized TiO2calcined at 400◦C exceeded 189m2 g−1, and that of the samples after calcinations at 500◦C still have 151m2 g−1. The obtained anatasemesoporous TiO2 nanoparticles show relative high thermal stability.
Laurylamine hydrochloride, Surfactant-mediated templating, Mesoporous titania, Nanoparticles
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【期刊论文】Adsorption of DNA on clay minerals and various colloidalparticles from an Alfisol
陈浩, P. Caia, Q. Huanga, *, X. Zhanga, H. Chenb
Soil Biology & Biochemistry 38 (2006) 471-476,-0001,():
-1年11月30日
Adsorption and desorption of salmon sperm DNA on four different colloidal fractions from Brown Soil and clay minerals were studied.The adsorption isotherms of DNA on the examined soil colloids and minerals conformed to the Langmuir equation. The amount of DNAadsorbed followed the order: montmorillonite[fine inorganic clayOfine organic clayOkaoliniteOcoarse inorganic clayOcoarse organicclay. A marked decrease in the adsorption of DNA on organic clays and montmorillonite was observed with the increase of pH from 2.0 to5.0. Negligible DNA was adsorbed by organic clays above pH 5.0. As for inorganic clays and kaolinite, a slow decrease in DNA adsorptionwas found with increasing pH from 2.0 to 9.0. The results implied that electrostatic interactions played a more important role in DNAadsorption on organic clays and montmorillonite. Magnesium ion was more efficient than sodium ion in promoting DNA adsorption on soilcolloids and minerals. DNA molecules on soil colloids and minerals were desorbed by sequential washing with 10 mM Tris, 100 mM NaCland 100 mM phosphate at pH 7.0. A percentage of 53.7–64.4% of adsorbed DNA on organic clays and montmorillonite was released, whileonly 10.7–15.2% of DNA on inorganic clays and kaolinite was desorbed by Tris and NaCl. The percent desorption of DNA from inorganicclays, organic clays, montmorillonite and kaolinite by phosphate was 39.7–42.2, 23.6–28.8, 29.7 and 11.4%, respectively. Data from thiswork indicated that fine clays dominate the amount of DNA adsorption and coarse clays play a more important role in the binding affinity ofDNA in soil. Organic matter may not favor DNA adsorption in permanent-charge soil. The information obtained is of fundamentalsignificance for the understanding of the ultimate fate of extracellular DNA in soil.
Adsorption, Desorption, DNA, Alfisol, Soil colloid, Clay mineral
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【期刊论文】Binding and Transformation of Extracellular DNA in Soil.1
陈浩, CAI Peng, HUANG Qiao-Yun, , ZHANG Xue-WenI and CHEN Hao
Pedosphere 16 (1): 16-20, 2005,-0001,():
-1年11月30日
DNA is the genetic material of various organisms. Extracellular DNA adsorbed or bound on surface-active particlesin soils has been shown to persist for long periods against nucleases degradation and still retain the ability to transformcompetent cells. This paper reviews some recent advances on the binding and transformation of extracellular DNA in soils,which is fundamental to understanding the nature of the soil, regulating biodiversity, and assessing the risk of releasinggenetically engineered microorganisms (GEMs) as well as being helpful for development of the genetic evolutional theoryof bacteria. Several influencing factors, such as soil pH, ionic strength, soil surface properties, and characteristics of theDNA polymer, are discussed. To date, the understanding of the type of molecular binding sites and the conformation ofadsorbed and bound DNA to soil particles is still in its infancy.
adsorption,, binding,, extracellular DNA,, soil,, transformation
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【期刊论文】Application of Crosslinked Chitosan in the Analysis ofUltratrace Mo(VI)
陈浩, S. H. Qian, A. F. Xue, M. Xiao, H. Chen
Journal of Applied Polymer Science, Vol. 101, 432-435 (2006),-0001,():
-1年11月30日
In this work, the adsorption properties ofcrosslinked chitosan for Mo(VI) were studied. The adsorptionrate of Mo(VI) by CCTS was 97% at pH 3.0. Adsorptionbalance time, elution conditions, the effect of coexisting elements,and the adsorption mechanism were investigated. Anovel method of ultratrace Mo(VI) preconcentration withCCTS and determination by graphite furnace atomic absorptionspectrometry was found. The detection limit (3_, n_ 10) of the method was 0.040 _g L_1, and the relativestandard deviation was 2.98% at 1.00 _g L_1. The methodhas been applied to the determination of Mo(VI) in environmentalwater samples, with satisfactory results.
adsorption, chitosan, crosslinking
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陈浩, 薛爱芳, 陈浩*, 罗兴才, 邬玉琼, 谢劲松
光谱学与光谱分析,2005,25(9):1514~1517,-0001,():
-1年11月30日
提出了用交联壳聚糖(OCTS)预富集、火焰原子吸收光谱法测定水中总锰的新方法。研究了OCTS对Mn(Ⅶ)的吸附行为,结果表明:在pH 3.00时,OCTS对Mn(Ⅶ)的吸附率最高,达98%。考察了吸附时间、CCTS用量、温度、样品体积以及共存元素对吸附率的影响;探讨了吸附机理。方法的检出限(3a)为1.86μg•L-1,相对标准偏差(I如)为2.0%(n=10)。用于南湖水和长江水中总锰的测定,结果满意。
交联壳聚糖, 锰(, Ⅶ), , 预富集, 火焰原子吸收光谱法
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【期刊论文】电感耦合等离子体原子发射光谱/质谱法在中药微量元素及形态分析中的应用
陈浩, 梁沛, 胡斌, 赵丽, 孙大海, 王小如
光谱学与光谱分析,2002,22(6):1019~1024,-0001,():
-1年11月30日
本文对近年来电感耦合等离子体原子发射光谱法(ICP-AES)和电感耦合等离子体质谱(ICP-MS)在中药微量元素及形态分析中的应用进行了评述,讨论了应用ICP-AES/MS技术测定中药微量元素样品处理和各种分析方法,引用文献58篇。微波消解可作为中药微量元素分析理想的样品处理方法;ICP/-AES/MS及各种联用技术在中药微量元素含量及形态分析中将发挥越来越重要的作用。
等离子体原子发射光谱, 等离子体质谱, 微量元素, 形态分析, 中药, 综述
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