Home

Citation: LI Wei, PAN Gang, CHEN Hao, ZHANG Mei-Yi, HE Guang-Zhi, LI Jin, YANG Yu-Huan. Temperature Effects on Adsorption-Desorption Irreversibility of Zn(II) onto Anatase[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 807-812. doi: 10.3866/PKU.WHXB20070603 shu

Temperature Effects on Adsorption-Desorption Irreversibility of Zn(II) onto Anatase

1.
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China

Received Date: 14 December 2006
Available Online: 27 April 2007

Microscopic structures and mechanism of Zn(II) adsorbed onto anatase at different temperatures were studied using extended X-ray absorption fine structure (EXAFS) spectroscopy. Macroscopic adsorption-desorption experiments indicated that adsorption isotherms and adsorption reversibility increased substantially with increasing temperature. When temperature increased from 5 ℃ to 40 ℃, the adsorption capacity increased from 0.125 mmol·g-1 to 0.446 mmol·g-1, while the desorption hysteresis angle (θ) decreased from 32.85°to 8.64°. The thermodynamic parameters ⊿H and ⊿S of the reaction were evaluated as 24.55 kJ·mol-1 and 159.13 J·mol-1·K-1, respectively. EXAFS spectra results showed that Zn(II) was adsorbed onto the solid surface in the form of octahedral hydrous Zn(II) ions, which were linked to TiO2 surface by sharing O atoms, with an average bond length RZn-O=(0.199±0.001) nm. EXAFS analysis of the second Zn-Ti coordination sphere resulted in two Zn-Ti atomic distances of (0.325±0.001) nmand (0.369±0.001) nm, corresponding to edge-sharing linkage (stronger adsorption site) and corner-sharing linkage (weaker adsorption site), respectively. The number of stronger adsorption sites (CN1) remained relatively stable while the number of weaker adsorption sites (CN2) increased remarkably as the temperature increased, making the proportion of two adsorption modes (CN1/CN2) drop from0.690 to 0.543. These results revealed that the increased adsorption capacity and reversibility at higher temperature were due to the increase in CN2 and the decrease in CN1/CN2. This result implies that, in a given environment (soils or rivers), the bioavailability of zinc is higher at high temperature than that at low temperature.
- EXAFS; Microscopic structures; Temperature; Adsorption-desorption; Adsorption reversibility; Zn(II); Anatase
1. [1]
  Weichen Zhu , Wei Zuo , Pu Wang , Wei Zhan , Jun Zhang , Lipin Li , Yu Tian , Hong Qi , Rui Huang . Fe-N-C heterogeneous Fenton-like catalyst for the degradation of tetracycline: Fe-N coordination and mechanism studies. Chinese Chemical Letters, 2024, 35(9): 109341-. doi: 10.1016/j.cclet.2023.109341
2. [2]
  Jie ZHAO , Sen LIU , Qikang YIN , Xiaoqing LU , Zhaojie WANG . Theoretical calculation of selective adsorption and separation of CO₂ by alkali metal modified naphthalene/naphthalenediyne. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 515-522. doi: 10.11862/CJIC.20230385
3. [3]
  Yuting Zhang , Zhiqian Wang . Methods and Case Studies for In-Depth Learning of the Aldol Reaction Based on Its Reversible Nature. University Chemistry, 2024, 39(7): 377-380. doi: 10.3866/PKU.DXHX202311037
4. [4]
  Hui Wang , Abdelkader Labidi , Menghan Ren , Feroz Shaik , Chuanyi Wang . 微观结构调控的g-C₃N₄在光催化NO转化中的最新进展：吸附/活化位点的关键作用. Acta Physico-Chimica Sinica, 2025, 41(5): 100039-. doi: 10.1016/j.actphy.2024.100039
5. [5]
  Youlin SI , Shuquan SUN , Junsong YANG , Zijun BIE , Yan CHEN , Li LUO . Synthesis and adsorption properties of Zn(Ⅱ) metal-organic framework based on 3, 3', 5, 5'-tetraimidazolyl biphenyl ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1755-1762. doi: 10.11862/CJIC.20240061
6. [6]
  Fei Xie , Chengcheng Yuan , Haiyan Tan , Alireza Z. Moshfegh , Bicheng Zhu , Jiaguo Yu . d带中心调控过渡金属单原子负载COF吸附O₂的理论计算研究. Acta Physico-Chimica Sinica, 2024, 40(11): 2407013-. doi: 10.3866/PKU.WHXB202407013
7. [7]
  Xueqi Yang , Juntao Zhao , Jiawei Ye , Desen Zhou , Tingmin Di , Jun Zhang . Modulating the d-band center of NNU-55(Fe) for enhanced CO₂ adsorption and photocatalytic activity. Acta Physico-Chimica Sinica, 2025, 41(7): 100074-. doi: 10.1016/j.actphy.2025.100074
8. [8]
  Ruiying WANG , Hui WANG , Fenglan CHAI , Zhinan ZUO , Benlai WU . Three-dimensional homochiral Eu(Ⅲ) coordination polymer and its amino acid configuration recognition. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 877-884. doi: 10.11862/CJIC.20250052
9. [9]
  Ji Qi , Jianan Zhu , Yanxu Zhang , Jiahao Yang , Chunting Zhang . Visible Color Change of Copper (II) Complexes in Reversible SCSC Transformation: The Effect of Structure on Color. University Chemistry, 2024, 39(3): 43-57. doi: 10.3866/PKU.DXHX202307050
10. [10]
  Cuicui Yang , Bo Shang , Xiaohua Chen , Weiquan Tian . Understanding the Wave-Particle Duality and Quantization of Confined Particles Starting from Classic Mechanics. University Chemistry, 2025, 40(3): 408-414. doi: 10.12461/PKU.DXHX202407066
11. [11]
  Peng YUE , Liyao SHI , Jinglei CUI , Huirong ZHANG , Yanxia GUO . Effects of Ce and Mn promoters on the selective oxidation of ammonia over V₂O₅/TiO₂ catalyst. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 293-307. doi: 10.11862/CJIC.20240210
12. [12]
  Xinyu Yin , Haiyang Shi , Yu Wang , Xuefei Wang , Ping Wang , Huogen Yu . Spontaneously Improved Adsorption of H₂O and Its Intermediates on Electron-Deficient Mn^(3+δ)+ for Efficient Photocatalytic H₂O₂ Production. Acta Physico-Chimica Sinica, 2024, 40(10): 2312007-. doi: 10.3866/PKU.WHXB202312007
13. [13]
  Xiaosong PU , Hangkai WU , Taohong LI , Huijuan LI , Shouqing LIU , Yuanbo HUANG , Xuemei LI . Adsorption performance and removal mechanism of Cd(Ⅱ) in water by magnesium modified carbon foam. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1537-1548. doi: 10.11862/CJIC.20240030
14. [14]
  Jingke LIU , Jia CHEN , Yingchao HAN . Nano hydroxyapatite stable suspension system: Preparation and cobalt adsorption performance. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1763-1774. doi: 10.11862/CJIC.20240060
15. [15]
  Ping ZHANG , Chenchen ZHAO , Xiaoyun CUI , Bing XIE , Yihan LIU , Haiyu LIN , Jiale ZHANG , Yu'nan CHEN . Preparation and adsorption-photocatalytic performance of ZnAl@layered double oxides. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1965-1974. doi: 10.11862/CJIC.20240014
16. [16]
  Fang Niu , Rong Li , Qiaolan Zhang . Analysis of Gas-Solid Adsorption Behavior in Resistive Gas Sensing Process. University Chemistry, 2024, 39(8): 142-148. doi: 10.3866/PKU.DXHX202311102
17. [17]
  Jiali CHEN , Guoxiang ZHAO , Yayu YAN , Wanting XIA , Qiaohong LI , Jian ZHANG . Machine learning exploring the adsorption of electronic gases on zeolite molecular sieves. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 155-164. doi: 10.11862/CJIC.20240408
18. [18]
  Wanchun Zhu , Yongmei Liu , Li Wang , Yunshan Bai , Shu'e Song , Xiaokui Wang , Zhongyun Wu , Hong Yuan , Yunchao Li , Fuping Tian , Yuan Chun , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement and Control of Temperature. University Chemistry, 2025, 40(5): 128-136. doi: 10.12461/PKU.DXHX202503028
19. [19]
  Shasha Ma , Zujin Yang , Jianyong Zhang . Facile Synthesis of FeBTC Metal-Organic Gel and Its Adsorption of Cr₂O₇²⁻: A Physical Chemistry Innovation Experiment. University Chemistry, 2024, 39(8): 314-323. doi: 10.3866/PKU.DXHX202401008
20. [20]
  Cheng PENG , Jianwei WEI , Yating CHEN , Nan HU , Hui ZENG . First principles investigation about interference effects of electronic and optical properties of inorganic and lead-free perovskite Cs₃Bi₂X₉ (X=Cl, Br, I). Chinese Journal of Inorganic Chemistry, 2024, 40(3): 555-560. doi: 10.11862/CJIC.20230282

Get Citation

PDF

XML

Metrics

PDF Downloads(2965)
Abstract views(3784)
HTML views(59)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return