High Brunauer Emmett Teller Surface Area Research Articles

Facile Synthesis of Super-Microporous Titania-Alumina with Tailored Framework Properties.

Super-microporous material (pore size 1–2 nm) can bridge the pore size gap between the zeolites (<1 nm) and the mesoporous oxides (>2 nm). A series of super-microporous titania–alumina materials has been successfully prepared via a facile one-pot evaporation-induced self-assembly (EISA) strategy by different solvents using fatty alcohol polyoxyethylene ether (AEO-7) as the template. Moreover, no extra acid or base is added in our synthesis process. When titanium isopropylate is used as the titanium source, these materials exhibit high BET surface areas (from 275 to 396 m2/g) and pore volumes (from 0.14 to 0.18 cm3/g). The sample prepared using methanol as the solvent shows the largest Brunauer–Emmett–Teller (BET) surface area of 396 m2/g. When tetrabutyl titanate is used as the titanium source, these materials exhibit high BET surface areas (from 282 to 396 m2/g) and pore volumes (from 0.13 to 0.18 cm3/g). The sample prepared using ethanol as the solvent shows the largest BET surface area of 396 m2/g.

Sorption of Phenolic Acids on Powdered Carbon Prepared by Complex Processing of Spent Coffee Grounds

Activated carbons are prepared by conventional two-stage carbonization–activation processing and complex processing of spent coffee grounds. The latter method includes preliminary solvent extraction of organic compounds. The samples prepared by conventional and complex processing methods have a high BET (Brunauer–Emmett–Teller) surface area (SBET = 864 and 1089 m2/g, respectively), specific surface area of mesopores (400 and 464 m2/g), and total pore volume VΣ (0.68 and 0.87 mL/g). It is shown that the complex processing produces activated carbons with a specific surface area 27% higher, compared to the conventional method. We propose that this sorption material can be used in purification of pharmaceutical production effluents. The capacity of the carbons to adsorb phenolic acids, in particular, salicylic and sulfosalicylic acids, which represent pharmaceutical microimpurities, is studied. The equilibrium concentrations of salicylic and sulfosalicylic acids are determined spectrophotometrically at λ = 296 and 294 nm, respectively, using a UV-2450 instrument (Shimadzu, Japan). The carbon produced by complex processing exhibits the most effective sorption properties (18 mg/g). The carbon prepared by conventional method displays intermediate characteristics (13.3 mg/g), and a reference Natural Brand adsorbent derived from lignocellulose material has the lowest characteristics (11.4 mg/g). The same pattern is observed for adsorption of sulfosalicylic acid, with the saturation adsorption being lower for sulfosalicylic than salicylic acid. We can state that substances with good solubility in water exhibit poorer physical adsorption than those with limited solubility. Processing the experimental data within the Langmuir and Freundlich adsorption models suggests that adsorption of the phenolic acids on the highly porous sorbents follows the Langmuir model, i.e., adsorption occurs at active sites where a dynamic equilibrium is established between adsorption and desorption processes.

Synthesis and characterization of MSU-2 synthesized by using tetraethylorthosilicate and Triton X-100

Adsorption technology is one of the well-established gas separation techniques as it can minimize cost and energy requirement for CO2 separation. Mesoporous silicas such as MSU-2 appears to be a good adsorbent as it comprises of three-dimensional (3D) wormhole framework structures that are highly interconnected which minimize the diffusion resistance of CO2 through its pore structure. Current study focus on the preparation of MSU-2 and investigation on the CO2 adsorption on the synthesized MSU-2. In this study, MSU-2 was prepared by using tetraethylorthosilica (TEOS) as a source of silica in the presence of non- ionic polyethyleneoxide (PEO)-based surfactants under an acidic condition where the pH is 2 at 55 °C for 48 hours via the fluoride-assisted two-step synthesis process. The two main steps involved are hydrolysis of TEOS and condensation of silica. The morphology, crystallinity, functional groups and pore characteristics of MSU-2 were investigated by using characterization method of Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-Ray (EDX) Spectrometry, X-ray Diffractometer (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET). The synthesized MSU-2 was well crystallized and possessed a uniform monodisperse microspherical morphology with BET surface area, pore volume and pore size of 964 m2/g, 0.98 cm3/g and 4.1 nm, respectively. All the characterization results showed that MSU-2 was successfully synthesized via solution precipitation method. In conclusion, the high BET surface area of the synthesized MSU-2 shows that MSU-2 is a very potential candidate as a good adsorbent for gases.

Carbonization Temperature Effect over Activated Carbon Porosity Derived from Industrial Processing Waste

The influence of carbonization temperature (CT) on pore properties of the prepared activated carbon using lentil processing waste product (LWP) impregnated with potassium carbonate was studied. Activated carbons (ACs) were obtained by impregnation with 3:1 ratio (w/w) K2CO3/LWP under different carbonization temperatures at 600, 700, 800 and 900 oC for 1h. Activation at low temperature represented that micropores were developed first and then mesoporosity developed, enhanced up to 800 oC and then started to decrease due to possible shrinking of pores. The optimum temperature for LWP was found to be around 800 oC on the basis of total pore volume and the Brunauer-Emmett-Teller (BET) surface area. The optimum LWPAC sample was found with a CT of 800 oC, which gives the highest BET surface area and pore volume of 1875 m2/g and 0.995 cm3/g, respectively.

Areca nut–derived porous carbons for supercapacitor and CO2 capture applications

The preparation and application of biomass-derived carbons in supercapacitor and CO2 absorption have inspired increasing attention due to the ease of fabrication, cost-effectiveness, and sustainability of the meso-/microporous carbon produced from various biological precursors. With this respect, areca nut (AN) was used to derive porous carbons, through carbonization and KOH activation, at various temperatures without or in the presence of N-doping agent of adenine. KOH-activation temperature and the N-doping agent are parameters influencing the surface area, porosity, and the micro-/mesoporous structure of the porous carbons. Appropriate adjustment of the preparation parameters resulted in porous carbons with extremely high Brunauer–Emmett–Teller surface area (SBET, up to 3723 m2/g), excellent CO2 absorption capacity (up to 4.8 mmol/g) at 25 °C, and outstanding capacitive performance with high specific capacitance (up to 419 F/g) and retention (> 91%) over 1000 cycles. Effect of preparation parameters on the micro-/mesoporous structures and the resolved SBET values, CO2 absorption capacity, and the capacitive performances of the porous carbons are the main focuses of this research.

Removal of Methylene Blue from Water by Copper Alginate/Activated Carbon Aerogel: Equilibrium, Kinetic, and Thermodynamic Studies

Activated carbon adsorption method was the most commonly used in the flied of the sewerage treatment due to large adsorption capacity, high adsorption efficiency, convenient operation and high regeneration rate. Despite this, the poor aqueous dispersion has a potential to cause loss of the adsorbent and affect water quality. The dispersion state of the activated carbons can be controlled effectively by aerogel. In this paper, copper alginate/activated carbon (CA/AC) aerogel was prepared by using the ionic gelation method. The CA/AC aerogel was characterized by scanning electron microscope (SEM), Fourier Transform infrared spectroscopy (FTIR) and Brunauer–Emmett–Teller (BET) surface area. Methylene blue (MB) was served as the adsorbate. The effect of adsorbent dose, contact time, initial MB concentration and temperature was studied systematically on adsorption performance of CA/AC. Testing results showed that CA/AC aerogel has high BET surface area of 319.64 m2/g and high adsorption capacity of 446.43 mg/g at 303 K. The equilibrium of methylene blue removal process by CA/AC aerogel were well described by the Langmuir isotherm model and Freundlich isotherm model. The results of the thermodynamic investigations indicated that the adsorption reactions were spontaneous, exothermic and the adsorption kinetics of methylene blue on CA/AC aerogel was best fitted to the pseudo-second-order kinetic model.

Catalytic Soot Oxidation Activity of NiO-CeO2 Catalysts Prepared by a Coprecipitation Method: Influence of the Preparation pH on the Catalytic Performance.

A series of NiO–CeO2 mixed oxide catalysts have been synthesized by a modified coprecipitation method at three different pH values (pH = 8, 9, and 10). The NiO–CeO2 mixed oxide samples were characterized by TGA, XRD, inductively coupled plasma atomic emission spectroscopy (ICP-AES), FTIR, Brunauer–Emmett–Teller (BET) surface area, H2 temperature-programmed reduction (H2-TPR), and electron microscopy (high-angle annular dark-field transmission electron microscopy/energy-dispersive X-ray spectroscopy (HAADF-TEM/EDS)). The catalytic activities of the samples for soot oxidation were investigated under loose and tight contact conditions. The catalysts exhibited a high BET surface area with average crystal sizes that varied with the pH values. Electron microscopy results showed the formation of small crystallites (~5 nm) of CeO2 supported on large plate-shaped particles of NiO (~20 nm thick). XRD showed that a proportion of the Ni2+ was incorporated into the ceria network, and it appeared that the amount on Ni2+ that replaced Ce4+ was higher when the synthesis of the mixed oxides was carried out at a lower pH. Among the synthesized catalysts, Ni-Ce-8 (pH = 8) exhibited the best catalytic performance.

Elemental Composition of Biochar Obtained from Agricultural Waste for Soil Amendment and Carbon Sequestration

For an agricultural country such as Thailand, converting agricultural waste into biochar offers a potential solution to manage massive quantities of crop residues following harvest. This research studied the structure and chemical composition of biochar obtained from cassava rhizomes, cassava stems and corncobs, produced using a patented locally-manufactured biochar kiln using low-cost appropriate technology designed to be fabricated locally by farmers. The research found that cassava stems yielded the highest number of Brunauer-Emmett-Teller (BET) surface area in the biochar product, while chemical analysis indicated that corncobs yielded the highest amount of C (81.35%). The amount of H in the corncob biochar was also the highest (2.42%). The study also showed biochar produced by slow pyrolysis was of a high quality, with stable C and low H/C ratio. Biochar’s high BET surface area and total pore volume makes it suitable for soil amendment, contributing to reduced soil density, higher soil moisture and aeration and reduced leaching of plant nutrients from the rhizosphere. Biochar also provides a conducive habitat for beneficial soil microorganisms. The findings indicate that soil incorporation of biochar produced from agricultural crop residues can enhance food security and mitigate the contribution of the agricultural sector to climate change impacts.

Cellulose Nanofibrous Membranes Modified with Phenyl Glycidyl Ether for Efficient Adsorption of Bovine Serum Albumin

Hydrophobic interaction chromatography (HIC) as an indispensable method for protein purification has attracted considerable attentions of researchers as well as biopharmaceutical industries. However, the low binding capacity and slow adsorption rate of the currently available HIC media lead to a little supply and high price of the highly purified proteins. Herein, nanofibrous membranes with hydrophobic binding sites were developed for HIC by directly coupling phenyl glycidyl ether on the hydrolyzed cellulose acetate nanofiber membrane (cellulose-phenyl NFM). Scanning electron microscope (SEM), water contact angle (WCA), Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET) surface area analysis and capillary flow porometer (CFP) were applied to evaluate the physically and chemically structural transformation. The obtained cellulose-phenyl NFMs showed a proper hydrophilcity (WCA = 37°), a relatively high BET surface area (3.6 times the surface area of commercial fibrous membranes), and tortuous-channel structure with through-hole size in the range of 0.25–1.2 μm, which led to a little non-specificity adsorption, high bovine serum albumin adsorption capacity of 118 mg g−1, fast adsorption process within 12 h, good long-term stability and reusability. Moreover, compared with traditional modification methods which always include activation and graft two steps, direct coupling method is more efficient for HIC media fabrication. Therefore, cellulose-phenyl NFMs with outstanding protein adsorption performance could be a kind of promising candidate for HIC.

Evaluation of Low Cost-Activated Carbon Produced from Waste Tyres Pyrolysis for Removal of 2-Chlorophenol

A low cost Activated Carbon (AC) was prepared by using waste tyres as raw material for the removal of 2-chlorophenol (2-CP). The AC adsorbent was prepared and activated by pyrolysis process at 900 ºC under constant nitrogen flow. The physical properties of the AC produced was characterized using X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), Field Emission Scanning Electron Microscopy (FESEM), and Fourier Transform Infra Red (FTIR). The influence of initial adsorbate concentration, pH and adsorbent dosage on the removal of 2-CP in the batch-operational mode at ambient temperature were also investigated. The results obtained showed the AC presence of an amorphous carbon with high BET surface area and a total pore volume of 208 m2.g-1 and 0.5817 cm3, respectively. The highest adsorption capacity of 2-CP by the AC absorbent was achieved at an initial concentration of 10 mg.L-1, pH 5, and adsorbent dosage of 0.5 g in the first 10 min of contact time. This finding proves that the low cost-AC produced from waste tyres can be utilized for an effective removal of chemical plant wastewater containing toxic chlorine substances. Copyright © 2019 BCREC Group. All rights reserved

Magnetic Solid-Phase Extraction of Dichlorodiphenyltrichloroethane and Its Metabolites from Environmental Water Samples Using Ionic Liquid Modified Magnetic Multiwalled Carbon Nanotube/Zeolitic Imidazolate Framework-8 as Sorbent.

As persistent organic pollutants, dichlorodiphenyltrichloroethanes (DDTs) and their metabolites pose considerable risks to human health and the environment. Therefore, monitoring DDTs in the environment is essential. Here, we developed a green, simple, and effective magnetic solid-phase extraction (MSPE) method coupled with gas chromatography tandem triple-quadrupole mass spectrometry to determine the DDT content of environmental water samples. A magnetic ionic liquid (IL) adsorbent was developed based on a modified magnetic multiwalled carbon nanotube/zeolitic imidazolate framework-8 (MM/ZIF-8/IL), synthesized by immobilizing the IL on the surface of MM/ZIF-8. We confirmed successful synthesis of MM/ZIF-8/IL by material characterization, and our results suggested that the MM/ZIF-8/IL had a high Brunauer–Emmett–Teller surface area (159.9 m2 g−1), good thermostability (<800 °C), and a high degree of superparamagnetism (52.9 emu g−1). Several experimental conditions affecting the MSPE efficiency were optimized. Under the best conditions, good detection linearity was achieved (0.5–500 µg L−1) with determination coefficients ranging from 0.9927 to 0.9971. The lower limits of detection (0.0016–0.0072 µg L−1) also had good precision, having an intraday relative standard deviation (RSD) ≤ 6.5% and an interday RSD ≤ 8.9%. Finally, we used the as-developed method to determine DDT levels in environmental water samples.

Synthesis of Ag‐modified TiO2 nanotube and its application in photocatalytic degradation of dyes and elemental mercury

AbstractBACKGROUNDThe non‐modified titanium dioxide (TiO2) nanotube (TNT) and silver (Ag)‐modified TNT samples were fabricated via an alkaline hydrothermal process. The synthesized samples had a high Brunauer–Emmett–Teller surface area since the resulted TNT was free of calcination, which is different from the traditional synthesized method. The specific surface area of non‐modified TNT and Ag‐modified TNT samples were 392 and 330 m2 g−1, respectively.RESULTSThe results indicated that anatase phase, cubic silver chloride (AgCl) and Ag co‐existed in the Ag‐modified TNT sample. In contrast, non‐modified TNT sample has only anatase phase. The OH groups, pre‐adsorbed water, and oxygen vacancies can be found on the surface of all samples. The Ag‐modified TNT sample showed to have higher removal efficiencies than that of non‐modified TNT sample for gas‐phase elemental mercury, carcinogenic malachite green, crystal violet and mixtures of dyes.CONCLUSIONAlthough specific surface area of non‐modified TNT was larger than that of Ag‐modified TNT, the Ag‐modified TNT possessed a high‐performance photocatalyst due to the electron‐hole pairs separation efficiency increase. © 2019 Society of Chemical Industry

Structure and Reactivity of Low-Rank Coal Chars Prepared from Fluidized Bed and Moving Bed Pyrolyzers and the Potential for Using Them in Pulverized Coal Injection (PCI)

Utilizing pyrolysis chars as the injection fuel in a blast furnace can reduce the dependence on high-quality pulverized coal injection (PCI) coal. In this study, the physical properties and reaction characteristics of chars prepared from two different industrial-scale pyrolyzers (fluidized bed and moving bed) are investigated. The results reveal remarkable component segregation in the char particles with different particle sizes. The properties of large-size char particles are found to better satisfy the PCI fuel requirement in a blast furnace. Compared with PCI coal, the char particles exhibit a rough surface, well-developed pore structure, and less-ordered chemical structure of carbon. Results from isothermal combustion, isothermal gasification, and drop tube furnace experiments show that both types of chars exhibit a better reactivity than PCI coal. The excellent reactivity of chars is closely related to its high Brunauer–Emmett–Teller surface area and relatively poor chemical ordering during conversion. Based on these characteristics, both fluidized bed char (FBC) and moving bed char (MBC) have a great potential to be used as PCI fuels. The application method of chars for PCI in a blast furnace is proposed finally.

Synthesis and electrochemical performance of high surface area hierarchical porous carbon with ultrahigh mesoporosity for high-performance supercapacitors

Hierarchical porous carbons (HPCs) with both high Brunauer–Emmett–Teller (BET) surface area and high mesoporosity have been synthesized by combination of self-template and one-step carbonization–activation strategy. Ferric citrate (FC) was used as the carbon precursor and self-template source, which not only produced a great number of mesopores with size of 5–20 nm but also brought about high content of graphitic structures by catalytic graphitization. The KOH dosage played a significant role in adjusting the BET surface area and pore size distribution. Importantly, considerable mesopores with width of 2–4 nm were created by KOH, owing to which both high BET surface area and high mesoporosity were achieved. The resultant HPCs exhibited high BET surface area (2055 m2 g−1), large pore volume (2.527 cm3 g−1), and ultrahigh mesoporosity (95.1%). As the electrode material for supercapacitors, the HPC presents a high specific capacitance of 289 F g−1 at 0.2 A g−1 and maintains 205 F g−1 at 30 A g−1 with the capacitance retention of 71% in 6 M KOH electrolyte. Additionally, the HPC-based two-electrode supercapacitor with 1 M Na2SO4 solution as electrolyte delivered a high energy density of 18.24 Wh kg−1 at a power density of 499 W kg−1 and retained 11.63 Wh kg−1 at a power density of 15 kW kg−1. The simple process and excellent performances make HPCs quite promising alternative for application of high-performance supercapacitors in the next generation.

Hierarchical copper oxide microspheres prepared in an ordinary household microwave oven

Hierarchical copper oxide (CuO) microspheres were prepared by a simple microwave-assisted preparation method in an ordinary household microwave oven under ambient pressure. The CuO microspheres were characterised by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and thermal gravimetric analysis. Characterisation results show that the hierarchical CuO microspheres are assembled by spine-like nanorods and have high Brunauer–Emmett–Teller surface area of 25.0 m2/g.

A simple hydrothermal synthesis of zeolite X from bauxite tailings for highly efficient adsorbing CO2 at room temperature

Abstract Zeolite X was successfully synthesized by a simple hydrothermal treatment from bauxite tailings, and the utilization rate of the bauxite tailings was reached 33.5%. The effects of the molar ratio of SiO2/Al2O3 (n(SiO2/Al2O3)), hydrothermal temperature and time on the preparation of zeolite X were systematically investigated. The CO2 adsorption capacity of the synthesized zeolite X samples were measured at room temperature over a pressure range of 0–101.325 KPa by a physical adsorption instrument. The results suggested that zeolite X, with a high crystallinity and regular octahedron morphology, was obtained at 110 °C for 16 h with the n(SiO2/Al2O3) fixed at 3.2. The N2 adsorption-desorption results showed that the produced zeolite X possessed a relatively high BET (Brunauer-Emmett-Teller) surface area of 571 m2/g with a 0.19 cm3/g micropore volume. The maximum CO2 adsorption capacity of zeolite X at 298 K was 6.4 mmol/g, which was 1.64-times that of the reported zeolite X synthesized from feldspar, indicating that the zeolite X can be synthesized from bauxite tailings and present excellent adsorption properties for greenhouse gases.

Study on the Product Characteristics of Pyrolysis Lignin with Calcium Salt Additives.

This study investigated and compared the product characteristics of pyrolysis lignin under different catalytic effects resulting from various calcium salts. The pyrolysis of lignin was conducted in a fixed-bed reactor with calcium salt additives, which included CaCl2, Ca(OH)2, and Ca(HCOO)2. The compositions of gas and bio-oil were detected using gas chromatography/mass spectrometry (GC/MS). The characterizations of chars were examined using Brunauer–Emmett–Teller (BET) surface area and scanning electron microscopy (SEM). The results indicate that all three types of calcium salts helped to promote bio-oil yield and inhibit gas and char from forming. Regarding the composition of gas products, calcium salt additives increased the concentrations of H2 and CH4 while decreasing the concentration of CO. In addition, calcium salt additives facilitated the formation of phenol and alkyl-phenols in bio-oil, but reduced the yields of guaiacol and vanillin, in the order CaCl2 < Ca(OH)2 < Ca(HCOO)2. Furthermore, when compared with the addition of CaCl2, the chars prepared by the addition of Ca(OH)2 and Ca(HCOO)2 had relatively higher BET surface areas. In conclusion, Ca(HCOO)2 had the greatest positive influence in regard to the product quality of lignin pyrolysis whilst also elevating the yield of value-added chemicals in bio-oils.

Synthesis of Telmisartan Organotin(IV) Complexes and their use as Carbon Dioxide Capture Media.

Novel, porous, highly aromatic organotin(IV) frameworks were successfully synthesized by the condensation of telmisartan and an appropriate tin(IV) chloride. The structures of the synthesized organotin(IV) complexes were elucidated by elemental analysis, 1H-, 13C-, and 119Sn-NMR, and FTIR spectroscopy. The surface morphologies of the complexes were inspected by field emission scanning electron microscopy. The synthesized mesoporous organotin(IV) complexes have a Brunauer–Emmett–Teller (BET) surface area of 32.3–130.4 m2·g−1, pore volume of 0.046–0.162 cm3·g−1, and pore size of around 2.4 nm. The tin complexes containing a butyl substituent were more efficient as carbon dioxide storage media than the complexes containing a phenyl substituent. The dibutyltin(IV) complex had the highest BET surface area (SBET = 130.357 m2·g−1), the largest volume (0.162 cm3·g−1), and was the most efficient for carbon dioxide storage (7.1 wt%) at a controlled temperature (323 K) and pressure (50 bars).

Microporous Polyimides from Ladder Diamines Synthesized by Facile Catalytic Arene–Norbornene Annulation as High-Performance Membranes for Gas Separation

We synthesized a series of rigid ladder-type diamines from readily available bromoanilines and norbornadiene in one step using facile catalytic arene–norbornene annulation (CANAL). Polycondensation of CANAL ladder diamines with 4,4′-(hexafluoroisopropylidene)diphthalic anhydride led to a series of microporous polyimides with different degrees of rotational freedom around the imide linkages. CANAL-PIs exhibited good solubility in a wide range of organic solvents, high thermal stability with decomposition temperature above 450 °C, high Brunauer–Emmett–Teller surface areas of ∼200–530 m2 g–1, and abundant micropore volume with variable pore size distributions. Mechanically robust membranes can be easily formed from CANAL-PIs and gave high gas permeabilities and moderate gas-pair selectivities. CANAL-PIs had higher permeability than and similar permselectivity to analogous PIs synthesized from Troger’s base and carbocyclic Troger’s base diamines under identical test conditions. CANAL-PIs also exhibited relati...

Investigation on the Preparation and Adsorption Performance of Bamboo Fiber Based Activated Carbon

In this work, an approach was explored to make natural fiber based activated carbon with high adsorption capacity for treating dyeing wastewater. Bamboo fiber based activated carbon (BFAC) was prepared by bamboo fiber extracted from bamboo strips by extracting technique. An orthogonal experiment was carried out to obtain optimum preparation condition for the best dye adsorption. The microstructures of BFAC were characterized by scanning electron microscopy, N2 adsorption-desorption analysis, X-ray diffraction, and Fourier transform infrared spectroscopy. Adsorption mechanism of BFAC to methylene blue (MB) was studied and the adsorption isotherm followed the Langmuir model, with maximum monolayer adsorption capacity of 651.7 mg g-1. The adsorption kinetic was better described by the pseudo-second-order model. Microstructure characterization showed lots of opened pores and cracks with different size on BFAC, with Brunauer-Emmett-Teller (BET) surface area of 1370 m2 g-1 and total pore volume of 0.9411 cm3 g-1. The analysis indicated that cellulose crystal of bamboo fiber was severely destroyed in the preparation process, which could contribute to the formation of pores. Moreover, -OH and -C=O functional groups on BFAC are beneficial for adsorbing MB in aqueous solution. As a result, adopting bamboo fiber may help form BFAC with high BET surface area, which proved to be an effective idea to prepare activated carbon with high adsorption performance.