有机功能化SiO2纳米颗粒被认为是一种很有前途的重金属吸附材料。然而，特定官能团在SiO2表面的实际吸附能力尚不清楚，由此引发了哪类有机基团对重金属亲和力更好的争论。在此，SiO2的表面功能化(-EDTA(乙二胺三乙酸)，-COOH， -SO3H， -SH和-NH2)通过一个简单的硅烷基化反应。批处理实验表明，表面功能化可显著提高SiO2的吸附能力。定量分析表明，在SiO2表面接枝1mol EDTA可吸附1.51 mol Pb(II)离子，分别是COOH-、SO3H-、SH-和-NH2功能化SiO2的7.7、17.1、28.4和50.2倍。这是首次以每有效官能团来评价功能化SiO2的吸附性，弥补了传统评价方法以单位质量计算吸附性的不足。通过实验和理论研究，确定并揭示了功能化二氧化硅的吸附机理。该工作不仅为重金属修复提供了一种有效的吸附剂，而且为新型二氧化硅基材料的评价和设计提供了有价值的见解。\n
\n评价有机功能化二氧化硅纳米颗粒对重金属的吸附性:定量比较和机械洞察力数据集，采用实验方法获得，数据格式为十进制(.xls)，数据量为3组，共8640条数据。", "ds_source": "
室内实验，自主产生。", "ds_process_way": "
采用XPS表征。通过批量实验研究了铅的吸附等温线。根据前人的研究和实际废水水质，选择初始浓度在0.05 ~ 1.50 mmol/L范围内变化。吸附实验是通过恒温培养箱摇床在25℃，180转/分，12小时摇晃Erlenmeyer烧瓶进行的。每次吸附实验吸附剂用量为1.0 g/L。采集1.0 ml水样，用0.22 μm膜过滤器(购自上海兴亚净化材料有限公司)过滤。残余滤液浓度用原子吸收光谱仪(AAS, contra700，德国)测定。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2019-03-01 00:00:00", "ds_acq_end_time": "2019-03-31 00:00:00", "ds_acq_place": "江西省南昌市", "ds_acq_lon_east": 115.45, "ds_acq_lat_south": 28.433333333333334, "ds_acq_lon_west": 116.53333333333333, "ds_acq_lat_north": 29.166666666666668, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 281403, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": "", "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "0c56714e-3378-43af-a884-626b9bd0ac7f.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "使用申明：“评价有机功能化二氧化硅纳米颗粒对重金属的吸附性数据集”来源于国家重点研发计划《大型煤矿和有色矿矿井高效利用技术与示范》（项目编号：2018YFC0406400）。", "ds_from_station": null, "organization_id": "4f9aad20-0a6f-4efd-9b8b-70cd10164ea3", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.UTCMW.db2163.2022", "subject_codes": [ "170.50" ], "quality_level": 3, "publish_time": "2022-05-31 08:55:07", "last_updated": "2026-01-12 11:28:42", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.UTCMW.db2163.2022", "i18n": { "en": { "title": "Evaluation of Organic Functionalized Silica Nanoparticles for Heavy Metal Adsorption Dataset (March 2019)", "ds_format": "Excel", "ds_source": "
Indoor experiment, independently generated.", "ds_quality": "
The data quality is good.", "ds_ref_way": "", "ds_abstract": "
Organic functionalized SiO2nanoparticles are considered a promising material for heavy metal adsorption. However, the actual adsorption capacity of specific functional groups on SiO2surfaces is still unclear, which has sparked a debate on which type of organic groups have better affinity for heavy metals. Here, the surface functionalization of SiO2(- EDTA (ethylenediaminetriacetic acid), - COOH, - SO3H, - SH and - NH2) is achieved through a simple silanization reaction. Batch experiments have shown that surface functionalization can significantly improve the adsorption capacity of SiO2. Quantitative analysis shows that grafting 1 mol of EDTA onto the surface of SiO2can adsorb 1.51 mol of Pb (II) ions, which are 7.7, 17.1, 28.4, and 50.2 times higher than COOH-, SO3H-, SH-, and - NH2functionalized SiO2, respectively. This is the first time that the adsorption of functionalized SiO2is evaluated based on each effective functional group, which compensates for the shortcomings of traditional evaluation methods that calculate adsorption per unit mass. The adsorption mechanism of functionalized silica was determined and revealed through experiments and theoretical research. This work not only provides an effective adsorbent for heavy metal remediation, but also offers valuable insights for the evaluation and design of new silica based materials.\n
\nEvaluation of the adsorption capacity of organic functionalized silica nanoparticles for heavy metals: quantitative comparison and mechanical insight dataset, obtained using experimental methods, data format in decimal (. xls), data volume of 3 groups, a total of 8640 data points.
", "ds_time_res": "日", "ds_acq_place": "Nanchang City, Jiangxi Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Characterization using XPS. The adsorption isotherms of lead were studied through batch experiments. Based on previous research and actual wastewater quality, the initial concentration was selected to vary within the range of 0.05~1.50 mmol/L. The adsorption experiment was conducted by shaking the Erlenmeyer flask in a constant temperature incubator shaker at 25 ℃, 180 rpm, for 12 hours. The amount of adsorbent used in each adsorption experiment is 1.0 g/L. Collect 1.0 ml of water sample and filter it using a 0.22 μ m membrane filter (purchased from Shanghai Xingya Purification Materials Co., Ltd.). The residual filtrate concentration was determined using an atomic absorption spectrometer (AAS, contra700, Germany).", "ds_ref_instruction": "Usage statement: The dataset for evaluating the adsorption of heavy metals by organic functionalized silica nanoparticles is sourced from the National Key Research and Development Program \"Efficient Utilization Technology and Demonstration of Large Coal Mines and Nonferrous Mines\" (Project No. 2018YFC0406400)." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "二氧化硅纳米颗粒", "吸附材料", "表面功能化" ], "ds_subject_tags": [ "地质学" ], "ds_class_tags": [], "ds_locus_tags": [ "江西省南昌市" ], "ds_time_tags": [ 2019 ], "ds_contributors": [ { "true_name": "杨利明", "email": "yangliming0809185@126.com", "work_for": "南昌航空大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "杨利明", "email": "yangliming0809185@126.com", "work_for": "南昌航空大学", "country": "中国" } ], "ds_managers": [ { "true_name": "敏玉芳", "email": "myf@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "其他" }