Cheng Gang Cai

Hubei University of Technology

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Yi Jiang

Harbin Normal University

Xin Jiang

Institute of Soil Science

Xinghou Gong

Hubei University of Technology

Tao Hu

Hubei University of Technology

Chonggang Wu

Hubei University of Technology

Xin Jiang

Shandong Provincial Water Resources Research Institute

Tao Chen

Hubei University of Technology

Hong Jiang

Air Force Medical University

Min Zhu

China Medical University

Jing Shao

Nanjing University of Aeronautics and Astronautics

Cooperative Institutions

Hubei University of Technology

Chinese Academy of Sciences

Zhejiang Shuren University

Sun Yat-sen University

Nanjing University of Aeronautics and Astronautics

Jiangnan University

Institute of Chemistry

University of Chinese Academy of Sciences

Tianjin University of Science and Technology

Fudan University

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Study of Adsorption Process and Performance of Neutral Red Dye Wastewater by Bamboo Shoot Hulls

Applied Mechanics and Materials (2013)

Xin Jiang Yi Jiang Cheng Gang Cai

Surface response optimization of adsorption process of neutral red dye wastewater by bamboo shoot hulls with the factors of pH value, amount of adsorbent, adsorption temperature, adsorption time and the response of adsorption rate were studied. The optimal parameters for adsorption process were of adsorbent concentration of 100 mg·L-1, adsorbent particle size of 60~80 mesh, pH 4.49, adsorbent amount of 3.65 g·L-1, adsorption time and temperature of 2.23 h and 39.70 °C, respectively. The maximal absorption rate got 98.37%. The adsorption follows the Langmuir and Freundlich isotherms, its dynamic behavior was consistent with the second-order reaction rate equations, the adsorption quantity was 179.3201 mg·g-1 at 30 °C. The apparent thermodynamic calculation of infrared spectroscopy showed that the adsorption process were of a spontaneous heat-emitting physical adsorption other than a simple chemical adsorption. Mechanical study showed that the functional groups were of hydroxyl and carbonyl groups on the pore and rough surfaces inside the hulls of bamboo shoots. Bamboo shoot hulls are good biological adsorption materials.

Bamboo shoot

Langmuir adsorption model

10.4028/www.scientific.net/amm.295-298.1647

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Citations (6)

Extraction Technology and Determination of Total Flavonoid in Magnolia Liliiflora Petals

Advanced materials research (2014)

Yi Jiang Xin Jiang Cheng Gang Cai

Orthogonal experiment optimization of microwave-assisted extraction (MAE) conditions of total flavonoids from Magnolia liliflora petals with the factors of ethanol concentration, extraction time,microwave power,solid/liquid ratio on the yield of total flavonoids were studied. The results showed that optimum extracting conditions of total flavonoids from Magnolia liliflora were as follows: adding 1:10 g·mL-1 of 40% alcohol and extracting for 5 min,microwave irradiation power 464W, under the optimal conditions, the maximal yield of flavonoids was of 2.08%.

Petal

Microwave power

10.4028/www.scientific.net/amr.941-944.1003

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Citations (1)

Convenient, Solvent-Free Method for Preparation of [Hydroxy(phosphoryloxy)iodo]arenes

Synthetic Communications (2010)

Min Zhu Cheng Gang Cai Ke Wei Jing Shao

A convenient, solvent-free method for preparation of [hydroxy(phosphoryloxy)iodo]arenes is reported. (Diacetoxyiodo)benzene or other hypervalent iodine reagents and phosphates are simply blended and ground for several minutes in an agate mortar, giving good yields of [hydroxy(phosphoryloxy)iodo]arenes with excellent purities.

Hypervalent molecule

10.1080/00397910903097229

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Optimum Process for Extraction of Total Flavonoids from Castor Leaves by Orthogonal Test

Advanced materials research (2014)

Yi Jiang Xin Jiang Cheng Gang Cai

Optimization of total flavonoid extraction from Castor leaves using orthogonal test methodology with the factors of ethanol concentration, extraction temperature,extraction time,solid/liquid ratio on the yield of total flavonoids were investigated.The results showed that optimum extracting conditions of total flavonoids from castor leaves were as follows: adding 1:40 g·mL -1 of 30% alcohol and extracting for 30 min,extraction temperature 70°C. Under the optimal conditions, the maximal yield of flavonoids was of 1.81%.

10.4028/www.scientific.net/amr.989-994.1029

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Aroma Analysis of a New Oolong Tea of Golden Guanyin by Gas Chromatography/Mass Spectrometry

Applied Mechanics and Materials (2014)

Cheng Gang Cai Jian Wei Mao Xiaolu Xu Li He Xin Jiang

Golden Guanyin tea from Lishui city, Zhejiang province, is a new variety of Oolong tea with special aromas. To analysis the aroma compounds, two sample preparation methods of tea grinding and water distillation were carried out, then the tea aromas and amino acids were detected. The main aroma compounds were of dimethyl sulfide, butanal, ethyl acetate, butanedial and cyclobutene by the grinding method, as for the distillation method, the aroma compounds detected were of benzeneacetaldehyde, phenylethyl alcohol, benzyl nitrile, Geraniol, indole, cyclopentene, phenylethyl butyrate, nerolidol, methyl jasmonate, 2,2'-dipyridylamine, benzenedicarboxylic acid, cyclopentaneacetic acid, methyl jasmonate ester, dibutyl phthalate and phytol. Golden Guanyin tea samples had 16 kind amino acids, in which glutamic acid and leucine were of 0.047 and 0.041 mg/mL, respectively, and the minimum ones were of cysteine and methionine in concentration of 0.004 mg/mL. The results will be helpful in the quality improvement and production of the new Golden Guanyin tea.

Nerolidol

Methyl salicylate

10.4028/www.scientific.net/amm.618.311

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Enhanced Electromechanical Properties of Three‐Phased Polydimethylsiloxane Nanocomposites via Surface Encapsulation of Barium Titanate and Multiwalled Carbon Nanotube with Polydopamine

Macromolecular Materials and Engineering (2021)

Cheng Gang Cai Tao Chen Xian Chen Yan‐ting Zhang Xinghou Gong

Abstract Owing to its low modulus, high breakdown strength, and low dielectric loss, polydimethylsiloxane (PDMS) is used as a great dielectric elastomer despite its low dielectric permittivity. Herein, polydopamine (PDA) is used to encapsulate barium titanate (BT) and multiwalled carbon nanotube (MWCNT) in situ during its polymerization to prepare core–shell structured fillers, which are then solution‐compounded with PDMS, and subsequently vulcanized with a cross‐linking agent. The resulting three‐phased nanocomposites exhibit improved filler‐PDMS interactions upon filler PDA‐encapsulation likely due to interfacial hydrogen bonding, thereby to enhance filler dispersion within the PDMS matrix. Compared with the unencapsulated PDMS nanocomposites, a softening effect (i.e., decreased cross‐linking) by the finer filler‐dispersion, in the context of a hardening effect by filler network formation, strengthens in the PDA‐modified nanocomposites to produce their lower moduli. Additionally, the insulating, interfacial PDA partially inhibits the formation of conductive paths and leakage currents, causing decreased dielectric loss while increased breakdown strength of the nanocomposites. Therefore, the PDA‐encapsulated BT and MWCNT filled PDMS nanocomposites display excellent electromechanical properties with a largest possible actuated strain of 7.0% at a breakdown strength of 13.9 kV mm −1 , which is 1.8 times that (3.9%@15.0 kV mm −1 ) of their unencapsulated counterparts and 4.7 times that (1.5%@18.4 kV mm −1 ) of unfilled, neat PDMS.

Polydimethylsiloxane

Barium titanate

Dielectric loss

10.1002/mame.202100046

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Citations (21)

Study on Processing Technology of Oil-Tea-Cake on Acid Dye Neutral Red Wastewater

Advanced materials research (2014)

Xin Jiang Yi Jiang Cheng Gang Cai

Orthogonal experiment optimization of adsorption conditions with the factors of pH value, adsorption temperature, adsorption time, amount of adsorbent of neutral red wastewater by oil tea cake were studied.The results showed that optimum optimal parameters for adsorption conditions were of adsorbent concentration of 200 mg·L-1, adsorbent particle size of 60~80 mesh, pH 6.0, adsorbent amount of 2.0 g·L-1, adsorption time and temperature of 1.5 h and 30 °C, respectively. The maximal absorption rate got 97.15%.The wastewater of treatment meet the national wastewater discharge standard.The oil tea cake is a promising, cheap, efficient, new biological materials of adsorption for neutral red in wastewater.

10.4028/www.scientific.net/amr.915-916.922

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Enhanced Thermal Conductivity of BN/SR Composites via Biomass-Modification of BN

Electronic Materials Letters (2022)

Yanting Zhang Cheng Gang Cai Tao Chen Chonggang Wu Xinghou Gong

Silicone rubber

Microelectronics

Surface Modification

10.1007/s13391-022-00387-z

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Magnetically separable and efficient platinum catalyst: Amino ligand enhanced loading and Fe²⁺ facilitated Pt⁰ formation

Applied Organometallic Chemistry (2021)

Haifeng Zhang Cheng Gang Cai Tao Hu Zhijie Zhang Lina Dai

Abstract Understanding the interaction between metal and the support is crucial in searching of efficient and recyclable noble metal heterogeneous catalysts. Herein, we report a core‐shell structured support for Pt catalyst with a magnetic Fe 3 O 4 core and a porous silica shell bearing amino groups. The prepared catalyst Fe 3 O 4 @mSiO 2 ‐APTES‐Pt showed a high loading of Pt (7.93 wt%) as well as a high fraction of active Pt 0 species, which both contributed to the high activity toward a model hydrosilylation reaction between 1‐octene and 1, 1, 1, 3, 5, 5, 5‐heptamethyltrisiloxane (HMTS). X‐ray photoelectron spectra (XPS) analysis revealed that the amino ligands played a dominant role in Pt loading and Fe 2+ probably facilitated the formation of low valence Pt 0 . Under the combined effect of magnetic nature of the support and proper support‐metal interactions, the catalyst exhibited excellent recyclability with a recovery of 99.7% and a yield of over 90% even after eight runs of recycling. This catalyst may provide a new option in designing and preparing heterogeneous catalysts that are highly recoverable, reusable, and recyclable.

Hydrosilylation

10.1002/aoc.6513

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Synthesis Technology of Amine Surfactant Modified Brewer's Grains for the Adsorption of Cr(VI)

Applied Mechanics and Materials (2014)

Xin Jiang Yi Jiang Cheng Gang Cai Hong Chen

The modified adsorbent was modified by amine reaction with brewer's grains that using epichlorohydrin as etherfying agent,N,N-Dimethyl formamide as dissolvent, triethylenete tramine as cross-linking agent.The simulation of Cr (VI) wastewater as treatment object, through the optimization of synthesis conditions of Cr (VI), the optimal synthesis process was obtained.The results showed, 4 g brewer's grains, add 15 ml epichlorohydrin and 15 ml N,N-Dimethyl formamide stirring 1h at 85 °C. Then added dropwise to 4mL triethylenete tramine, mixing reaction 1h at 85 °C. The maximal absorption rate got 99.81%.The modified brewer's grains of amine surfactant modified is a promising treatment of chromium wastewater biological materials.

Epichlorohydrin

Dimethyl formamide

Dimethylamine

10.4028/www.scientific.net/amm.641-642.394

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